Langfuse — The AI Toolchain

Langfuse v4.23.0

Fri, 28 Aug 2026 11:52:16 GMT

Langfuse v4.23.0 adds stable evaluator API endpoints, dashboard S3 export, per-tool invocation metrics, and a sessions search bar. • Adds stable evaluator and evaluation rule API endpoints, replacing the previously unstable versions. • Adds `toolCallInvocations` measure for per-tool invocation counts in analytics. • Exports dashboards and widgets as part of the core data S3 export job. • Enables restoring previous evaluator versions from the evaluator UI. • Adds a search bar to the sessions table, now generally available. • Enables navigation to traces directly by tracing ID via the command menu. • Ingests in-app agent, Ask AI, and title AI feature traces as production OTel telemetry via the v4 OTel pipeline. • Exposes v4 migration data through the MCP integration. • Attributes and surfaces deprecated API callers (sorted by recency) so teams can identify clients still using legacy endpoints. • Replaces the legacy trace timeline with the compact timeline as the sole timeline view.

Langfuse v4.22.0

Thu, 27 Aug 2026 07:24:31 GMT

Langfuse v4.22.0 adds OpenAI-compatible API support for instance AI features and a new `LANGFUSE_IN_APP_AGENT_ENABLED` env var to control the Assistant worker. • Adds `LANGFUSE_IN_APP_AGENT_ENABLED` environment variable to control whether the Assistant worker and in-app agent surfaces are active on self-hosted instances. • Supports OpenAI-compatible APIs as the backend for Langfuse instance AI features, broadening the model providers usable with the in-app agent. • Evaluator creation configuration is now tracked alongside each evaluator, making it possible to audit how an evaluator was originally set up. • Allows serving the web build output from a dedicated asset host, enabling CDN-offloaded deployments. • Improves status message rendering on the trace view UI.

Langfuse v4.21.0

Wed, 26 Aug 2026 12:36:06 GMT

Langfuse v4.21.0 adds support for reading custom OIDC profiles from the userinfo endpoint. • Supports reading custom OIDC profile attributes from the userinfo endpoint, enabling richer identity mapping for SSO integrations.

Langfuse v4.20.0

Wed, 26 Aug 2026 11:13:56 GMT

Langfuse v4.20.0 adds evaluator SLO metrics, inline score categories, and eval rule-filter reuse in search. • Adds `LANGFUSE_AI_*` environment variables to configure the Langfuse AI model, replacing the previous `LANGFUSE_AWS_BEDROCK_*` variables. • Adds evaluator execution SLO metrics to track evaluation pipeline performance. • Enables reuse of rule filters directly in the evaluator search bar. • Adds inline category display for scores and opens score configs in a new tab. • Collapses the trace-table facet list behind a 'Show N more' control to reduce UI clutter. • Gates organization API key creation on the `admin-api` entitlement. Breaking changes: • The `LANGFUSE_AWS_BEDROCK_*` environment variables for the in-app Langfuse AI model are replaced by `LANGFUSE_AI_*`; existing configurations using the old names will stop working. • The default JWT session max age is reduced to 14 days; users with sessions longer than 14 days will be logged out on upgrade.

Langfuse v4.19.0

Tue, 25 Aug 2026 15:37:56 GMT

Langfuse v4.19.0 adds org-level feature flag defaults and a model definition upsert API endpoint. • Adds a model definition upsert API endpoint, enabling programmatic create-or-update of model definitions. • Adds org-level settings for feature flag defaults, letting administrators control feature preview defaults across an entire organization.

Langfuse v4.18.0

Tue, 25 Aug 2026 09:41:55 GMT

Langfuse v4.18.0 adds payload-backed eval rule filters, refreshed eval templates, and tool approval source tracking in agent event streams. • Adds payload-backed evaluation rule filters, enabling eval rules to filter on trace/generation payload fields. • Refreshes built-in evaluation templates for all-caps detection, exact-match, and keyword-overlap scoring. • Records tool approval source in the in-app agent event stream for auditability of human-in-the-loop decisions. • Logs encoded request body sizes for OTLP ingestion to aid observability of ingest traffic.

Langfuse v4.17.0

Mon, 24 Aug 2026 13:14:03 GMT

Langfuse v4.17.0 adds a new evaluation UX, annotation queue creation from trace/events tables, and configurable markdown render limits. • Makes the markdown render character limit configurable at container runtime via a new environment variable — lets operators tune rendering performance without rebuilding the image. • Redesigned evaluation UX with the ability to show and filter evaluators by model, giving teams clearer visibility into which models are running evals. • Enables creating annotation queues directly from the trace table and the events table, reducing the steps needed to route observations into a review workflow. • Adds Anthropic Messages as a supported model provider for the Langfuse Assistant (OSS), expanding in-app agent model options. • Sessions view now displays arbitrary metadata, making it easier to inspect custom fields attached to sessions. • Migration UI is now shown by default when the instance is in dual-write mode, surfacing the v4 migration status without manual navigation. • Onboarding flow now prompts users to enable AI features, streamlining first-run setup for eval and assistant capabilities.

Langfuse v4.16.0

Fri, 21 Aug 2026 05:59:55 GMT

Langfuse v4.16.0 brings Ask AI to self-hosted deployments and adds more filter options in session span lists. • Adds more filter options in the span list within session views. • Enables Ask AI support on self-hosted Langfuse instances. • Extends signup attribution tracking to LinkedIn, Reddit, and X click IDs.

Langfuse v4.15.0

Wed, 19 Aug 2026 16:57:45 GMT

Langfuse v4.15.0 adds a compact trace timeline preview and extends the in-app agent to open-source deployments. • Introduces a compact timeline view for traces, available as a feature preview in the trace UI. • Improves sandbox tool rendering in the assistant UI.

Langfuse v4.14.0

Wed, 19 Aug 2026 11:24:18 GMT

Langfuse v4.14.0 adds a chart view for the scores table and a dense maps-style timeline renderer for traces. • Adds a chart view for the scores table, giving an alternative visualization alongside the existing tabular display. • Introduces a dense timeline renderer for traces with a maps-style viewport, enabling smoother navigation of complex trace timelines. • Fits the trace timeline to its measured lane, improving layout accuracy for trace visualization.

Langfuse v4.13.0

Tue, 18 Aug 2026 13:30:35 GMT

Langfuse v4.13.0 adds full agent-turn tracing, admin auth for model routes, SSO avatar mapping, and per-deployment export controls. • Allows admin authentication for model routes via the API, enabling programmatic model management without per-user credentials. • Adds per-deployment control over export sources, replacing the previous per-user beta flag so availability is governed at the deployment level. • Maps user avatar images from the custom SSO `picture` claim, surfacing profile photos from identity providers in the Langfuse UI. • Enables matching pricing tiers on observation attributes for more granular cost attribution. • Traces complete agent turns across human-approval steps in the in-app agent, linking the full turn into a single trace.

Langfuse v4.13.0

Tue, 18 Aug 2026 13:30:35 GMT

Langfuse v4.13.0 adds multi-turn agent tracing, admin auth for model routes, SSO profile picture mapping, and deployment-scoped export sources. • Allows admin authentication for model routes via the API, enabling programmatic model management without per-user credentials. • Maps user profile images from a custom SSO picture claim, populating avatars automatically during SSO login. • Traces complete agent turns across approval steps in the in-app agent, giving end-to-end visibility into multi-turn approval chains. • Scopes export source availability by deployment capability rather than per-user beta enrollment, making export features uniformly available based on deployment configuration. • Matches pricing tiers on observation attributes, enabling more granular cost attribution across trace observations.

Langfuse v4.12.0

Mon, 17 Aug 2026 14:44:18 GMT

Langfuse v4.12.0 adds a v4 migration UI, filter sidebar search, PostHog export failure notifications, and off-thread trace graph rendering. • Adds a v4 migration UI toggle in the settings page and a migration link in personal settings menus, letting teams self-serve the v4 data-layer transition. • Adds a PostHog export failure project notification event so teams are alerted when the PostHog analytics export breaks. • Surfaces persisted PostHog export faults directly in the settings page, making misconfiguration visible without log-diving. • Adds filter sidebar search by facet name, letting users quickly locate specific filters across large facet lists. • Moves large trace graph layout off the main thread, unblocking interactive exploration of traces with many spans. • Removes trace and session bookmarking from the UI.

Langfuse v4.12.0

Mon, 17 Aug 2026 14:44:18 GMT

Langfuse v4.12.0 adds a v4 migration UI toggle, PostHog export fault visibility in settings, and a searchable filter sidebar. • Adds a v4 migration UI toggle in the Settings page, plus a migration link in personal settings menus, to guide projects through the v4 data pipeline transition. • Surfaces persisted PostHog export faults directly in the project Settings UI, and emits a `posthog-export-failed` project notification event when the export worker encounters a config fault. • Adds facet-name search to the filter sidebar, letting users quickly locate filters in large facet lists. • Large trace timeline graphs are now laid out off the main thread, unlocking smooth rendering for traces with many spans. • Removes trace and session bookmarking from the UI (the 'bookmarked' column is also dropped as a trace evaluator filter option).

Langfuse v4.11.0

Fri, 14 Aug 2026 08:04:16 GMT

Langfuse v4.11.0 adds configurable markdown render limits, annotation counts in sessions, and surfaced background agent activity. • Makes the markdown render character limit configurable via a new web setting, preventing runaway rendering of large LLM outputs. • Exposes migration observation evidence in the v4 upgrade flow, giving teams visibility into what data is being migrated. • Shows existing annotation counts directly in the sessions view, so practitioners can gauge coverage at a glance. • Surfaces background in-app agent conversation activity and toast cards, keeping users informed of async agent work without leaving the current view. • Introduces a forced v3 experience for projects integrating through third-party providers on legacy SDKs, ensuring consistent behavior during the v4 transition. • Adds a v4 features pitch with documentation links to the upgrade sidebar header, making migration guidance discoverable in-product.

Langfuse v4.11.0

Fri, 14 Aug 2026 08:04:16 GMT

Langfuse v4.11.0 adds configurable markdown render limits, annotation counts in sessions, and surfaced background agent activity. • Makes the markdown render character limit configurable via a new setting. • Surfaces background conversation activity and toast cards for the in-app agent. • Shows existing annotation counts on the sessions view. • Exposes migration observation evidence in the v4 migration workflow. • Introduces a forced v3 experience for projects integrating through third-party providers on legacy SDKs.

Langfuse v4.10.0

Wed, 12 Aug 2026 15:32:02 GMT

Langfuse v4.10.0 raises trace observation cap to 20k, adds full dashboard filter options, and integrates metrics API for billing. • Raises the observation load cap to 20,000 per trace, unlocking inspection of much larger LLM pipeline runs. • Adds all filter options and value suggestions to widget and monitor forms in dashboards, enabling more precise monitoring configurations. • Integrates a metrics API for billing, connecting usage measurement to billing workflows. • Adds Cursor Cloud environment support for the in-app agent. • Allows users to start new conversations or switch conversations in the in-app agent while another is still running. • Streamlines the v4 evaluator upgrade UX for the evals workflow.

Langfuse v4.10.0

Wed, 12 Aug 2026 15:32:02 GMT

Langfuse v4.10.0 raises trace observation cap to 20k, adds full dashboard filter options, and integrates a metrics API for billing. • Raises the observation load cap to 20,000 per trace, enabling analysis of much larger LLM pipeline runs. • Adds all filter options and value suggestions to widget and monitor forms in the Dashboards UI. • Integrates a metrics API for billing, enabling programmatic consumption tracking. • Adds Cursor Cloud as a supported agent environment. • Allows users to start new conversations or switch conversations in the in-app agent while another conversation is already running. • Tracks authenticated backend activity in analytics. • Adds a custom-models seeder scenario for testing and development.

Langfuse v4.9.0

Tue, 11 Aug 2026 13:54:29 GMT

Langfuse v4.9.0 adds an instance switcher for self-hosted deployments. • Adds a self-hosted instance switcher to the UI, enabling practitioners to navigate between multiple self-hosted Langfuse instances without re-configuring.

Langfuse v4.9.0

Tue, 11 Aug 2026 13:54:29 GMT

Langfuse v4.9.0 adds a self-hosted instance switcher to the UI. • Adds a self-hosted instance switcher to the UI, letting users switch between multiple Langfuse instances without leaving the interface.

Langfuse v4.8.0

Tue, 11 Aug 2026 12:12:28 GMT

Langfuse v4.8.0 lets users approve an agent tool once for an entire conversation session. • In the in-app agent, a tool approval can now be granted once for the duration of a whole conversation, removing the need to re-approve on every tool call.

Langfuse v4.8.0

Tue, 11 Aug 2026 12:12:28 GMT

Langfuse v4.8.0 lets users approve an in-app agent tool once for an entire conversation session. • In the in-app agent UI, a tool approval can now be granted once for an entire conversation rather than requiring approval on every individual tool call.

Langfuse v4.7.0

Tue, 11 Aug 2026 06:10:44 GMT

Langfuse v4.7.0 adds PostHog/Mixpanel to S3 core data exports, auto-direct OTel writes, and search-bar filter token tooltips. • Adds PostHog and Mixpanel integrations to the core data S3 export pipeline in the worker. • Auto-directs OTel traffic to direct-write path for post-cutoff organizations, bypassing legacy ingestion. • New session header UI in the Sessions view. • Filter tokens in the search bar now show explanatory tooltips on hover. • Observed-metadata suggestions are now shared with the filter sidebar, not only the search bar. • Tracks tool approval decisions in the in-app agent. • Removes the API version dropdown from webhook automation actions, simplifying the configuration surface.

Langfuse v4.7.0

Tue, 11 Aug 2026 06:10:44 GMT

Langfuse v4.7.0 adds PostHog/Mixpanel to S3 core data exports, auto-directs OTel traffic, and surfaces filter token explanations and metadata suggestions. • Adds PostHog and Mixpanel integrations to the core data S3 export worker, expanding analytics destinations for exported trace data. • Enables auto-direct-write of OTel traffic for post-cutoff organizations, routing OpenTelemetry ingestion without manual configuration. • Adds a new session header to the sessions view for improved session-level navigation. • Adds hover-based explanations for filter tokens in the search bar, helping practitioners understand active filter conditions at a glance. • Shares observed-metadata suggestions between the search bar and the filter sidebar, making metadata-based filtering consistent across surfaces. • Tracks tool approval decisions in the in-app agent, giving visibility into human-in-the-loop approval events. • Removes the API version dropdown from webhook automation actions, simplifying webhook configuration.

Langfuse v4.6.0

Thu, 06 Aug 2026 13:15:40 GMT

Langfuse v4.6.0 makes background execution the default path for the in-app agent. • In-app agent now runs background execution as the default path, enabling non-blocking agent workflows out of the box.

Langfuse v4.6.0

Thu, 06 Aug 2026 13:15:40 GMT

Langfuse v4.6.0 makes background execution the default path for in-app agent runs. • In-app agent execution now runs in the background by default, enabling non-blocking agent workflows.

Langfuse v4.5.0

Thu, 06 Aug 2026 09:23:29 GMT

Langfuse v4.5.0 adds bulk prompt export/import and concurrent background-run limits for agents. • Adds bulk export and import for prompts, enabling teams to move prompt libraries across projects or environments in one operation. • Adds per-user and per-organization concurrency limits for background agent runs, bounding resource consumption on shared instances. • Adds silent mode for agent tools, suppressing tool output from being surfaced in the agent UI.

Langfuse v4.5.0

Thu, 06 Aug 2026 09:23:29 GMT

Langfuse v4.5.0 adds bulk prompt export/import and concurrent agent run limits per user and organization. • Adds bulk export and import for prompts, allowing practitioners to move prompt libraries across projects or environments in one operation. • Bounds concurrent background agent runs per user and per organization, giving platform operators control over agent resource consumption. • Adds silent mode for agent tools, enabling tools to run without surfacing notices or output to the user.

Langfuse v4.4.0

Tue, 04 Aug 2026 14:46:52 GMT

Langfuse v4.4.0 adds in-app agent background execution with client/web support and expands session sidebar with span list. • Adds client/web support for 'in-app agent' background execution with a canonical hydration contract, enabling agents to run in the background from browser contexts. • Increases the maximum number of steps available to in-app agents. • Adds a span list to the modern session sidebar, giving visibility into individual spans directly from the session view. • Forwards semantic root filters to v4 tables in dashboards, making dashboard filter behavior consistent across surfaces. • Tracks association origin for media, recording how media attachments are linked.

Langfuse v4.4.0

Tue, 04 Aug 2026 14:46:52 GMT

Langfuse v4.4.0 adds in-app agent background execution with web support and a span list to the sessions sidebar. • Adds client/web support for 'in-app agent' background execution with a canonical hydration contract, enabling agents to run without blocking the UI. • Increases the maximum number of steps available to in-app agents. • Adds a span list panel to the modern sessions sidebar for faster trace navigation. • Forwards semantic root filters to v4 dashboard tables, making cross-surface filtering consistent. • Tracks media association origin to provide provenance context for media attachments.

Langfuse v4.3.0

Mon, 03 Aug 2026 08:59:08 GMT

Langfuse v4.3.0 exposes semantic roots in the v2 API and adds media size display in trace previews. • Exposes semantic roots via the v2 API, enabling richer trace hierarchy data for downstream consumers. • Shows media size in the trace/generation preview UI, giving practitioners visibility into payload footprint at a glance.

Langfuse v4.3.0

Mon, 03 Aug 2026 08:59:08 GMT

Langfuse v4.3.0 exposes semantic roots in the v2 API and adds media size display in the UI preview. • Exposes semantic roots via the v2 API, enabling structured trace hierarchy data programmatically. • Shows media size in the UI media preview panel.

Langfuse v4.2.0

Fri, 31 Jul 2026 07:46:56 GMT

Langfuse v4.2.0 adds MCP telemetry, metrics discovery metadata, and automatic overflow of oversized trace fields to media storage. • Adds MCP tool outcome telemetry to Datadog for canonical observability of MCP tool calls. • Exposes metrics query discovery metadata via MCP, enabling clients to enumerate available metrics queries. • Exposes observation scope requirements via MCP so clients can understand required scoping for observations. • Automatically moves oversized direct-event fields in trace observations to media storage rather than dropping or truncating them. • Presents oversized fields as attachments in the UI instead of raw inline content.

Langfuse v4.2.0

Fri, 31 Jul 2026 07:46:56 GMT

Langfuse v4.2.0 adds MCP telemetry, metrics discovery metadata, and automatic overflow of oversized trace fields to media storage. • Adds MCP tool outcome telemetry to Datadog for canonical observability of MCP tool calls. • Exposes metrics query discovery metadata and observation scope requirements via the MCP integration, giving agents richer context for querying Langfuse metrics. • Automatically moves oversized direct-event fields in trace observations to media storage on ingestion, preventing payload rejection and presenting them as attachments in the UI. • Exposes a v4 migration UI flag for the preview/migration path.

Langfuse v4.1.0

Thu, 30 Jul 2026 14:12:12 GMT

Langfuse v4.1.0 adds deprecated API last-seen timestamps, auto-generated API keys on prompt copy, and enhanced experiment review validation. • Shows the last-seen time for deprecated API endpoints in the v4 UI, helping teams prioritize migration away from old surfaces. • Auto-generates API keys when copying a prompt during v4 migration, reducing manual setup steps. • Enhances the MultiStepExperimentForm with a review step that validates inputs and surfaces error messages before execution. • Extracts and extends background execution support for the in-app agent, enabling longer-running agent tasks.

Langfuse v4.1.0

Thu, 30 Jul 2026 14:12:12 GMT

Langfuse v4.1.0 adds deprecated API last-seen timestamps, auto-generated API keys on prompt copy, and background agent execution. • Shows the last-seen timestamp for deprecated APIs in the v4 UI, helping teams prioritize migration away from old endpoints. • Auto-generates API keys when copying a prompt during the v4 migration flow, reducing manual setup steps. • Extracts and extends background execution for the in-app agent, enabling longer-running agent tasks without blocking the UI. • Adds review-step validation and error messaging to the multi-step experiment form, surfacing configuration problems before a run starts. Breaking changes: • The Docker `latest` tag now points to the v4 image line instead of v3; deployments pinned to `latest` will be upgraded to v4 on next pull.

Langfuse v4.0.0

Wed, 29 Jul 2026 14:52:03 GMT

Langfuse v4 brings full-text search, monitors/alerts, filter search bar, and faster Observations/Metrics API v2 to self-hosted deployments. • Adds `Observations API v2` with significantly faster performance for self-hosted deployments. • Adds `Metrics API v2` with significantly faster performance for self-hosted deployments. • Adds full-text search across inputs, outputs, and metadata for self-hosted deployments. • Adds a filter search bar for narrowing trace and observation views. • Adds monitors and alerts for metric-based observability. • Adds tracing filter for ingested API key, enabling per-key trace attribution. • Adds opt-in queue-consumption liveness health check for the worker service. • Adds approximate row count display in the traces table. • Adds outlier chart strip (Pulse) above the trace table for surfacing anomalous events. • Adds append-only agent run events for the in-app agent (public beta), now available outside Enterprise Edition. • Adds authentication headers support on remote experiment runs. • Adds fresh download URL minting on the exports page for batch exports. • Adds worker path for background in-app agent runs. Breaking changes: • Upgrading from v3 to v4 requires following the dedicated upgrade guide at langfuse.com/self-hosting/upgrade/upgrade-guides/upgrade-v3-to-v4; existing deployments will not work without this migration.

Langfuse v4.0.0

Wed, 29 Jul 2026 14:52:03 GMT

Langfuse v4 brings full-text search, monitors/alerts, Observations API v2, Metrics API v2, and a filter search bar to self-hosted deployments. • Adds opt-in queue-consumption liveness health check for the worker service (LFE-13685). • Adds full-text search across inputs, outputs, and metadata for self-hosted deployments. • Adds a filter search bar for trace and observation filtering in self-hosted deployments. • Adds monitors and alerts for self-hosted deployments. • Adds Observations API v2 with significantly faster performance. • Adds Metrics API v2 with significantly faster performance. • Adds ability to filter traces by ingested API key. • Adds approximate row count display in the traces table. • Adds an outlier chart strip (Pulse) above the trace table for anomaly visibility. • Adds append-only agent run events for in-app agent runs. • Adds worker path for background in-app agent runs. • Moves the in-app agent out of Enterprise Edition into public beta. • Adds authentication header support on remote experiment runs. • Mints fresh download URLs on the batch exports page. Breaking changes: • Upgrading from v3 to v4 requires following the dedicated upgrade guide at langfuse.com/self-hosting/upgrade/upgrade-guides/upgrade-v3-to-v4; net-new deployments must use the Helm v4 guide.

Langfuse v3.224.1

Thu, 23 Jul 2026 12:12:53 GMT

Langfuse v3.224.1 rejects dataset-run-item writes in events-only mode and exposes uploaded media bytes via OpenTelemetry. • The API now rejects `dataset-run-item` surface writes when the server is running in `events_only` mode, preventing silent data loss. • OpenTelemetry integration now exposes uploaded media bytes, making media payload sizes visible in OTEL telemetry.

Langfuse v3.224.1

Thu, 23 Jul 2026 12:12:53 GMT

Langfuse v3.224.1 adds dataset-run-item rejection in events-only mode and exposes uploaded media bytes via OpenTelemetry. • Rejects dataset-run-item surface in `events_only` mode via the API, preventing invalid ingestion paths in that configuration. • Exposes uploaded media bytes in the OpenTelemetry (`otel`) integration, making media size observable through OTEL pipelines. • Detangles the Ask AI system prompt from injected context in the search bar, enabling cleaner prompt control for the AI feature.

Langfuse v3.224.0

Wed, 22 Jul 2026 16:09:30 GMT

Langfuse v3.224.0 adds boolean score widgets, OTEL media upload, streaming trace I/O, and a mobile shell. • Streams trace observation input/output as bytes via the API (`feat(api): stream trace observation IO as bytes`). • Uploads media during OTEL worker ingestion, enabling media attachment through the OpenTelemetry pipeline. • Adds boolean score widgets and monitors to dashboards. • Migrates MCP score read tools from scores v2 to v3. • Reads prompt usage counts from events using the v4 prompt pipeline. • Introduces a minimal-chrome mobile shell for improved mobile layout.

Langfuse v3.224.0

Wed, 22 Jul 2026 16:09:30 GMT

Langfuse v3.224.0 adds boolean score widgets, OTEL media upload during ingestion, and streaming trace observation I/O as bytes. • Streams trace observation input/output as bytes via the API (`feat(api): stream trace observation IO as bytes`). • Uploads media during OTEL worker ingestion, enabling media attachment through the OpenTelemetry pipeline. • Adds boolean score widgets and monitors to dashboards. • Migrates MCP score read tools from scores v2 to v3. • Reads prompt usage counts from events for v4 prompts. • Introduces a minimal-chrome mobile shell layout for improved mobile UI.

Langfuse v3.223.0

Tue, 21 Jul 2026 14:09:11 GMT

Langfuse v3.223.0 unifies score filtering across all levels and adds ClickHouse skip indexes for faster time-range queries. • Adds `created_at` minmax skip indexes to ClickHouse `observations`, `traces`, and `scores` tables, accelerating time-range queries at scale. • Unifies score filtering across all hierarchy levels and introduces ScoreTag level color-coding in the scores UI. • Supports opening 'Manage score configs' in a new browser tab from the annotations panel. • Adds a mobile hamburger menu and Langfuse brand mark to the mobile top bar for improved small-screen navigation.

Langfuse v3.223.0

Tue, 21 Jul 2026 14:09:11 GMT

Langfuse v3.223.0 unifies score filtering across all levels and adds ClickHouse skip indexes for faster time-range queries. • Adds `created_at` minmax skip indexes to ClickHouse `observations`, `traces`, and `scores` tables, accelerating time-range queries on large datasets. • Unifies score filtering across all hierarchy levels and introduces ScoreTag level color-coding in the scores UI. • Supports opening 'Manage score configs' in a new browser tab from the annotations panel. • Adds a real mobile hamburger menu for sidebar navigation on small screens.

Langfuse v3.221.0

Fri, 17 Jul 2026 14:42:07 GMT

Langfuse v3.221.0 adds in-view charts for the events table, 'View as table' dashboard navigation, and an AI assistant entrypoint for widget creation. • Adds in-view charts to the v4 events table so any filtered view can be rendered as a chart directly ('any view is a chart'). • Adds 'View as table' navigation on dashboard widgets, letting users jump from a widget directly to the corresponding traces or observations table. • Adds a direct entrypoint in the 'Add widget' modal to invoke the AI assistant for creating dashboard widgets. • Overhauls the filter sidebar UX for a redesigned filtering experience across tables and views.

Langfuse v3.219.0

Fri, 17 Jul 2026 11:10:28 GMT

Langfuse v3.219.0 adds deep-linked monitor alerts and context-aware AI assistant quick actions. • Monitor alerts now deep-link directly to the traces/observations table filtered to the breaching time window, making it faster to investigate threshold violations. • AI assistant quick actions are now context-aware and cover a broader range of in-app scenarios. • Dark mode layering model updated for improved visual consistency across the UI.

Langfuse v3.218.0

Thu, 16 Jul 2026 17:59:15 GMT

Langfuse v3.218.0 adds eval job configurations to core data S3 export and forces EVENTS export source on events_only self-hosted deployments. • Includes eval job configurations in the core data S3 export, so evaluation setup is captured alongside trace data.

Langfuse v3.216.0

Thu, 16 Jul 2026 11:38:31 GMT

Langfuse v3.216.0 adds metadata filtering for sessions, dashboard/widget CRUD to the Public API and MCP, and blob export deprecation notices. • Adds dashboard and widget CRUD endpoints to the Public API and MCP server (marked unstable). • Enables metadata filtering on sessions in the v4 sessions view. • Writes a deprecation notice into blob exports for legacy export sources.

Langfuse v3.215.0

Thu, 16 Jul 2026 08:14:43 GMT

Langfuse v3.215.0 adds facet-filter suggestions in the search bar, Sentry error IDs on crash pages, and an agent sandbox. • Search bar now suggests matching facet filters as you type bare search terms, making it faster to narrow traces and observations. • Adds a sandbox environment for the agent, enabling isolated agent execution.

Langfuse v3.214.0

Wed, 15 Jul 2026 17:36:51 GMT

Langfuse v3.214.0 adds MCP monitor tools, metadata filters for monitors, and a new auth cookie namespacing env var. • Adds `listMonitors` and `getMonitor` tools to the MCP server, enabling programmatic monitor access via MCP. • Adds `NEXTAUTH_COOKIE_NAME_SUFFIX` environment variable to namespace auth cookies across multiple Langfuse instances. • Adds `hideXAxisLabels` option to charts for improved readability. • Adds metadata filter support in monitor queries. • Tags the `x-langfuse-ingestion-version` header on OTel API spans for ingestion version tracking. • Emits a code eval dispatch duration distribution metric for observability into evaluation pipeline performance. • Enables the root observation filter by default for application roots in the filters view. • Adds a support-agent demo scenario to the seeder for handcrafted demo-grade agent traces.

Langfuse v3.213.0

Tue, 14 Jul 2026 08:49:39 GMT

Langfuse v3.213.0 enables monitors for self-hosted deployments and adds a configurable `REDIS_SOCKET_TIMEOUT_MS` environment variable. • Adds `REDIS_SOCKET_TIMEOUT_MS` environment variable to make Redis socket timeout configurable for self-hosted deployments. • Enables monitors for self-hosted Langfuse deployments via event writes, bringing parity with cloud-hosted monitoring. • Adds contract-aware autocomplete to the code evaluator editor, surfacing available variables and types inline while writing eval logic. • Adds a copy-session-id button to the session detail header for quick clipboard access to session identifiers. • Writes a run-completion manifest per export run in blob storage, enabling downstream consumers to detect when an export run is complete. • Adds an optional footer to `TablePeekView` for navigation controls in peek/side-panel views.

Langfuse v3.212.0

Fri, 10 Jul 2026 13:58:47 GMT

Langfuse v3.212.0 adds dashboard widget copy-paste and versioned JSON import/export for dashboard configurations. • Adds widget menus, copy-paste, and versioned JSON import/export for dashboards, enabling shareable and reproducible dashboard configurations.

Langfuse v3.211.0

Fri, 10 Jul 2026 10:29:39 GMT

Langfuse v3.211.0 adds boolean score filtering, project notification channels, tool-call support in evaluators, and bulk event deletion. • Adds boolean score filtering to the filters UI, enabling traces and observations to be filtered by boolean-typed scores. • Adds project notification channels, allowing teams to configure per-project alerting destinations. • Passes tool calls through to both code and LLM-as-a-judge evaluators, enabling evaluations over tool-use traces. • Enables select-all batch delete on the v4 events table, supporting bulk cleanup of event records. • Automatically blocks evaluator configs when billing is exhausted or non-401 auth LLM errors occur, preventing runaway evaluation spend.

Langfuse v3.210.0

Thu, 09 Jul 2026 14:41:43 GMT

Langfuse v3.210.0 adds a customizable Home dashboard, trace DAG view switcher, live agent reasoning, and PostHog instrumentation skill. • Adds a trace graph view mode switcher — toggle between aggregated and expanded as-it-ran DAG views for a trace. • Transforms the Home screen into a full dashboard with preset widgets, a curated default layout, and per-project selection. • Adds a PostHog instrumentation skill to the in-app agents feature. • Shows live reasoning output from the in-app agent as it runs. • Allows cloud admins to view organization and project settings pages (RBAC expansion).

Langfuse v3.209.0

Thu, 09 Jul 2026 11:47:08 GMT

Langfuse v3.209.0 revamps the dark theme with surface elevation and semantic status colors, and adds table view preset category chips. • Adds system table view preset category chips to the web UI for faster filtering and navigation. • Revamps the dark theme with surface elevation, text hierarchy, and semantic status colors.

Langfuse v3.208.0

Wed, 08 Jul 2026 18:08:26 GMT

Langfuse v3.208.0 makes Parquet the default export format and tightens prompt label handling via MCP. • Parquet is now the default export format for all projects (previously required opt-in per project). • MCP prompt creation now blocks applying the `production` label directly at creation time, enforcing a safer promotion workflow. Breaking changes: • The default blob export format for all projects is now Parquet; any downstream pipeline that expected a different default format will receive Parquet output without explicit configuration.

Langfuse v3.207.0

Wed, 08 Jul 2026 09:49:25 GMT

Langfuse v3.207.0 adds experiment tools to the MCP integration and exposes ingested SDK analytics in ClickHouse export views. • Adds `ingested_sdks` field to ClickHouse analytics export views, enabling SDK ingestion breakdowns in data exports. • Adds experiment tools to the MCP (Model Context Protocol) integration, expanding agentic experiment workflows.

Langfuse v3.206.0

Tue, 07 Jul 2026 13:30:05 GMT

Langfuse v3.206.0 adds a public experiments API, API key creator tracking, and a dataset onboarding 'Select Observations' entry point. • Adds a public API for experiments, enabling programmatic management of experiment workflows. • Tracks the creator of project and organization API keys, improving audit visibility for key management. • Adds a 'Select Observations' entry point in the dataset onboarding flow, making it easier to build datasets from existing trace observations. • Moves time range and auto-refresh selectors next to the page title across dashboard views for quicker access. • Redesigns the v4 migration audit page.

Langfuse v3.205.1

Sun, 05 Jul 2026 10:02:23 GMT

Langfuse v3.205.1 adds an SDK usage timeline view. • Adds an SDK usage timeline visualization in the v4 UI.

Langfuse v3.205.0

Fri, 03 Jul 2026 17:20:56 GMT

Langfuse v3.205.0 adds Parquet export, widget creation via MCP/API, and richer trace graph and session views. • Promotes `Parquet` to a first-class, whitelisted export `fileType` for blob exports, alongside existing formats. • Enables dashboard widget creation via the API and MCP (Model Context Protocol) integration. • Adds real v4 session support in the Sessions view with a new View model and visible filters. • Improves the trace graph view with live framing, a collapsible per-project panel, and broader availability across traces. • Suggests observed metadata keys with their types in the search bar for faster filter building. • Collapses the filter sidebar to a rail and moves the date picker into the page header across table views. • Improves the code evaluator editing experience in the Evals section. • Shows the playback transport control only on traces that have playback content.

Langfuse v3.204.0

Fri, 03 Jul 2026 11:36:17 GMT

Langfuse v3.204.0 adds SDK attribution persistence, auto-collapsing tool calls, and a custom graph renderer with trace playback. • Adds trace playback and a custom graph renderer for visualizing trace execution in the trace UI. • Persists SDK attribution data during ingestion, enabling source tracking across SDKs. • Auto-collapses tool calls in the trace UI when a trace contains many tool calls, reducing visual noise.

Langfuse v3.203.2

Thu, 02 Jul 2026 15:35:24 GMT

Langfuse v3.203.2 adds agent skills, auto-rename conversations, and an event-propagation health check. • Adds Langfuse skills support to the agent, enabling the agent to invoke built-in capabilities. • Adds auto-rename for agent conversations based on context. • Adds event-propagation stuck health check to the worker for monitoring pipeline reliability. • Adds Salesforce org ID, user auth methods, and SSO domain data to core data export.

Langfuse v3.203.0

Wed, 01 Jul 2026 12:35:41 GMT

Langfuse v3.203.0 adds optional TLS for Redis Sentinel, mutating MCP calls with HITL, dashboard cross-chart sync, and targeted model price audits. • Adds optional TLS support for Redis Sentinel deployments. • Supports mutating MCP (Model Context Protocol) calls and Human-in-the-Loop (HITL) workflows in the agent interface. • Adds dashboard cross-chart synchronization and hover interactivity for coordinated exploration across charts. • Adds targeted model price audit capability for agents. • Adds V4 historic backfill background migrations for data migration pipelines. • Shows tool call arguments on hover in the trace timeline view.

Langfuse v3.202.0

Mon, 29 Jun 2026 12:47:46 GMT

Langfuse v3.202.0 adds a generic short-lived credential refresh manager and conversation deletion in the agent UI. • Adds a generic short-lived credential interface and refresh manager for rotating ephemeral credentials automatically. • Enables deleting conversations in the agent interface.

Langfuse v3.201.0

Fri, 26 Jun 2026 15:39:32 GMT

Langfuse v3.201.0 polishes the v4 migration readiness page and condenses the trace detail layout with a smoother timeline. • Condenses the trace detail layout and delivers a smoother timeline rendering in the trace view. • Polishes the v4 migration readiness page.

Langfuse v3.200.0

Fri, 26 Jun 2026 12:36:39 GMT

Langfuse v3.200.0 unifies trace detail into a resizable drawer and rebuilds the Timeline as a two-pane waterfall view. • Unifies the trace detail surface into a single adaptive, resizable drawer for streamlined peek navigation. • Rebuilds the trace Timeline as a two-pane waterfall layout for clearer span visualization. • Adds an organization migration surface for v4 upgrades. • Emits a blob export keep-up ratio metric from the worker for export pipeline observability.

Langfuse v3.199.0

Fri, 26 Jun 2026 08:21:22 GMT

Langfuse v3.199.0 adds subtree wall-clock duration on trace observations and upgrade status tiles for v4. • Shows subtree wall-clock duration on observations in the trace view, making it easier to identify cumulative latency across nested spans. • Adds upgrade status tiles to the v4 UI, surfacing migration progress at a glance. • Adds a legacy API usage page for v4, preserving visibility into historical API consumption during the v4 transition. • Replaces blob export delay gauge with a keep-up ratio metric in the worker, providing a more actionable signal for export pipeline health.

Langfuse v3.198.0

Thu, 25 Jun 2026 15:36:29 GMT

Langfuse v3.198.0 adds multi-select dataset deletion, magic paste for JSON editors, annotation queue keyboard shortcuts, and Gemini 3 grounding search pricing. • Adds magic paste for JSON editors, auto-detecting and formatting pasted JSON in editor fields. • Adds keyboard shortcuts to annotation queues, plus comment-icon disambiguation and icon alignment improvements. • Adds multi-select delete for dataset items, backed by a shared ConfirmDialog component. • Adds Gemini 3 grounding search pricing to the built-in model price catalog. • Reflects Parquet export-tuning overrides in the blob-storage settings UI. • Surfaces selected filter options at the top of the filter sidebar for faster access. • Emits a per-project blob export lag gauge for monitoring export pipeline health. • Restricts playground execution so users with the VIEWER role cannot run prompts.

Langfuse v3.197.0

Wed, 24 Jun 2026 14:41:38 GMT

Langfuse v3.197.0 adds Parquet blob export streaming, a `listUsers` MCP tool, and AI-powered filter generation inside the search bar. • Adds a `parquet` flag to blob export tuning configuration for ClickHouse-native Parquet streaming exports to blob storage. • Adds `listUsers` tool to the MCP (Model Context Protocol) integration. • Adds a 'Running' status badge for in-progress blob storage export jobs in the UI. • Moves AI filter generation into the search bar, accessible via the Tab → AI interaction.

Langfuse v3.196.0

Wed, 24 Jun 2026 08:13:37 GMT

Langfuse v3.196.0 adds per-project blob export tuning, user context in agent system prompts, and session ID linking in annotation queues. • Adds per-project blob export tuning via the `exportTuning` column, enabling fine-grained control over worker-side export behavior per project. • Links session IDs from the queue processor in annotation workflows, connecting annotation queue items directly to their originating sessions. • Adds user context to the in-app agent system prompt, giving the agent awareness of the current user during interactions. • Adds Salesforce (SFDC) org and user sync for Langfuse Cloud environments, enabling CRM-level account data integration.

Langfuse v3.195.0

Tue, 23 Jun 2026 09:12:45 GMT

Langfuse v3.195.0 adds metadata filter shortcuts in JSON view and media attachment support for dataset items. • Adds media attachments support for dataset items, enabling images and other media to be stored directly on dataset entries. • Adds metadata value filter shortcuts in the JSON view for events, making it faster to filter on nested metadata fields.

Langfuse v3.194.0

Fri, 19 Jun 2026 14:41:25 GMT

Langfuse v3.194.0 adds a blob export raw-passthrough path in the worker. • Adds a blob export raw-passthrough path in the worker for direct blob data export.

Langfuse v3.193.0

Fri, 19 Jun 2026 13:44:41 GMT

Langfuse v3.193.0 adds Slack marketplace install, inline dataset/evaluator editing, quoted search terms, and agent GA. • Adds Slack marketplace install flow for connecting Langfuse to Slack workspaces. • Supports quoted score and metadata names containing spaces in the search bar. • Adds inline edit and delete action icons directly on datasets, evaluators, and annotation queues rows in the UI. • Removes the in-app agent feature flag, making the agent feature generally available. • Adds a default model price audit workflow for reviewing model pricing. • Adds guidance in the LLM connection form to help users add models not listed by default.

Langfuse v3.192.2

Thu, 18 Jun 2026 21:33:15 GMT

Langfuse v3.192.2 adds BullMQ stall and blob export observability to the worker. • Adds BullMQ stall and blob export observability to the worker service for monitoring job health and export operations.

Langfuse v3.192.1

Thu, 18 Jun 2026 19:05:25 GMT

Langfuse v3.192.1 adds an API endpoint to invalidate all cached API keys at once. • Adds an API endpoint to invalidate all cached API keys in bulk.

Langfuse v3.192.0

Thu, 18 Jun 2026 16:42:58 GMT

Langfuse v3.192.0 adds a legacy public API rate limit group, agent system prompt loading from Langfuse, and S3 signing diagnostics on upload failures. • Adds a legacy public API rate limit group to manage rate limiting for older API consumers separately. • Enables agents to load their system prompt directly from Langfuse, centralizing prompt management. • Logs S3 signing diagnostics on upload failures to aid in debugging blob storage configuration issues.

Langfuse v3.191.0

Thu, 18 Jun 2026 10:51:11 GMT

Langfuse v3.191.0 makes grammar search GA on v4 events tables and adds timing to the blob export pipeline. • Promotes the grammar search bar to general availability on the v4 events tables. • Adds application-level timing instrumentation to the blob export pipeline for observability into export performance.

Langfuse v3.189.0

Thu, 18 Jun 2026 07:20:13 GMT

Langfuse v3.189.0 adds grammar search for the v4 events table, Flue framework OTEL span mapping, and a codebase navigator agent skill. • Adds grammar search bar (beta) to the v4 events table in the observations UI, enabling structured filtering of trace data. • Maps Flue framework spans to the Langfuse data model via OpenTelemetry, extending OTEL ingestion support to the Flue framework. • Adds a Langfuse codebase navigator skill to the agents feature, enabling AI-assisted exploration of the Langfuse codebase. • Adds a redirect tool to the agent framework for handling agent-driven redirects. • Lands new users in a default project automatically during onboarding, reducing initial setup friction. • Adds an overlay layer system to the UI for improved rendering of layered components such as search-bar tooltips.

Langfuse v3.188.0

Wed, 17 Jun 2026 08:36:17 GMT

Langfuse v3.188.0 adds rate limits to web callouts and the agent, blob storage integrations to core data S3 export, and a subquery-IN rewrite for observations. • Adds `blob_storage_integrations` to the core data S3 export worker, expanding what gets included in bulk exports. • Adds rate limits to web callouts via the feat(web-callouts) surface. • Adds rate limits to the agent component. • Introduces a subquery-IN rewrite for observations-v2 queries, available behind an environment flag.

Langfuse v3.187.0

Tue, 16 Jun 2026 10:25:48 GMT

Langfuse v3.187.0 adds evaluator deletion via UI/API/MCP, reapply-after-delete support, and resource URLs in agent/MCP context. • Adds ability to delete evaluators through the UI, API, and MCP interfaces. • Supports re-applying evaluator deletion, enabling recovery workflows after an evaluator is removed. • Includes resource URLs in agent and MCP context for richer tracing of tool calls. • Allows the agent window to be resized and repositioned in the UI.

Langfuse v3.186.0

Mon, 15 Jun 2026 16:00:27 GMT

Langfuse v3.186.0 adds session root-observation filtering, media upload rate limits, live monitor leading-window preview, and agent source citations. • Adds root observation filter to the session detail view, letting practitioners narrow session traces to top-level spans directly in the UI. • Adds an upload rate-limit budget for media ingestion to prevent runaway media upload usage. • Adds an in-progress leading window to the live monitor preview, surfacing the most recent incomplete evaluation window before it closes. • Adds `api_version` tag to ClickHouse `log_comment` entries for scores, enabling version-scoped query attribution in ClickHouse logs. • Adds a housekeeping skill to the agents feature for automated maintenance workflows. • Displays cited sources alongside agent answers in the agent UI. • Makes the 'Runs' tab the default tab on the datasets detail page, reducing clicks for practitioners reviewing dataset experiment results. • Blocks legacy export sources for new Cloud exporters in blob-storage exports.

Langfuse v3.185.0

Fri, 12 Jun 2026 11:48:13 GMT

Langfuse v3.185.0 adds conversation starters for agents, monitor bucket live preview, shift-selection in traces, and automatic ClickHouse compatibility detection. • Automatically detects ClickHouse versions on startup and sets compatibility flags without manual configuration. • Adds conversation starters to the Langfuse agent interface. • Adds bucket live preview scoped by evaluation window in monitors. • Raises the organization limit for monitors from the previous cap to 20. • Enriched blob export (`isEnrichedBlobExportAvailable`) is now gated on V4 environment variables for self-hosted deployments. • Batch export now reads sessions from the events table for V4 users. • Checkboxes in traces and observations now support shift-selection for bulk actions and are more performant. • Removes the beta label from the corrections feature, marking it generally available. • Adds a new experimental feature modal to the web UI.

Langfuse v3.184.1

Thu, 11 Jun 2026 11:23:46 GMT

Langfuse v3.184.1 applies export field groups to the legacy observations export in blob storage. • Applies export field groups to the legacy observations export in blob storage.

Langfuse v3.184.0

Thu, 11 Jun 2026 09:10:49 GMT

Langfuse v3.184.0 accelerates metadata filtering and adds feedback buttons to the agent UI. • Adds feedback buttons to the agent UI for quick human-in-the-loop signal collection. • Accelerates `contains` and `startsWith` filter operators on metadata columns for faster trace/observation filtering.

Langfuse v3.183.0

Wed, 10 Jun 2026 18:14:16 GMT

Langfuse v3.183.0 adds web callouts from traces and sessions, new no-data resolution modes for monitors, and user location context in the agent. • Adds additional no-data resolution modes to monitors, giving more control over how missing data is handled in alerting. • Enables sending web callouts directly from a trace or session view. • Adds current user location context to the agent.

Langfuse v3.182.0

Wed, 10 Jun 2026 15:37:37 GMT

Langfuse v3.182.0 exposes MCP evaluator tools and adds trace deletion from the events table. • Exposes unstable evaluator and evaluation-rule tools via MCP (Model Context Protocol) integration. • Adds a trace delete button directly to the events table in the traces UI.

Langfuse v3.181.0

Wed, 10 Jun 2026 08:53:34 GMT

Langfuse v3.181.0 adds Claude Fable 5 and Mythos 5 model support for token cost tracking. • Adds Claude Fable 5 and Mythos 5 to the supported models list for usage and cost tracking.

Langfuse v3.180.0

Tue, 09 Jun 2026 16:07:40 GMT

Langfuse v3.180.0 ships a v3 Scores API, metric alerting, in-app agent tracing, and a new `GOOGLE_CLOUD_UNIVERSE_DOMAIN` GCP storage option. • Releases the v3 Scores API as the canonical endpoint, with a flattened response shape, cursor-based forward migration (`v: 1`), case-insensitive `source` and `dataType` query parameters, and strict rejection of unknown query params on the v3 list endpoint; Scores v2 is now demoted to legacy. • Adds `GOOGLE_CLOUD_UNIVERSE_DOMAIN` environment variable to configure the universe domain for GCP blob storage (supports non-standard GCP endpoints). • Adds metric alerting with a scheduler, processor, alert dispatch pipeline, and management UI. • Exposes code evaluators (TypeScript) via public API endpoints, including an expanded allowlist of TypeScript evaluator helper functions. • Adds in-app agent tracing with tool-call visibility in the UI and a Langfuse Docs MCP integration. • Adds Team/Enterprise urgent (Sev-1) support request workflows.

Langfuse v3.179.0

Mon, 08 Jun 2026 09:41:11 GMT

Langfuse v3.179.0 adds a v3 Scores API with cursor pagination and polymorphic values, OpenAI Responses API support, and MCP/CLI settings UI. • Adds v3 Scores API with polymorphic value support, cursor pagination, field groups, and full filter params (Phases 1–4), behind a feature flag. • Adds `LANGFUSE_CLICKHOUSE_DELETED_MASK_CLEANER_CLUSTER_MODE_ENABLED` environment variable to control cluster-mode deletion mask cleaning for self-hosted deployments. • Adds V4 self-hosted environment variables for the worker service. • Supports OpenAI Responses API connections for LLM integrations. • Adds MCP and CLI settings page and agent tools banner in the web UI. • Handles numeric columns in `getObservationFilterValues` for MCP. • Introduces a deletion mask cleaner for managing data lifecycle. • Decouples blob-storage export source visibility from the V4 beta toggle. • Adds charting support in the experiments list view; moves experiments UI tables to general availability.

Langfuse v3.178.0

Tue, 02 Jun 2026 13:29:23 GMT

Langfuse v3.178.0 connects the in-app agent to MCP and adds an optional dataset ID to upsertDataset. • Adds optional `id` parameter to the `upsertDataset` MCP tool, enabling deterministic dataset identity on upsert. • Connects the in-app agent to the Langfuse MCP server, making the agent available via the Model Context Protocol. • Derives code evaluation support from the dispatcher, enabling code evals based on dispatcher configuration.

Langfuse v3.177.0

Mon, 01 Jun 2026 10:02:46 GMT

Langfuse v3.177.0 adds a flag to disable legacy tracing FTS, an AI telemetry toggle, and claude-opus-4-8 model pricing. • Adds `LANGFUSE_DISABLE_LEGACY_TRACING_IO_SEARCH` environment variable to allow disabling full-text search on v3 tracing tables, useful for operators tuning query performance. • Adds a toggle in the AI features settings to control AI telemetry collection. • Adds built-in pricing support for the `claude-opus-4-8` model.

Langfuse v3.176.0

Thu, 28 May 2026 13:51:57 GMT

Langfuse v3.176.0 adds in-app agent API keys, full-text search, code-based evals, MCP expansions, and dashboard import/export. • Adds `import`/`export` for dashboard widget configs, enabling sharing and reuse of dashboard layouts. • Exposes metrics, scores, media, comments, datasets, annotation queues, and a health route via MCP — broadening the MCP surface for agent integrations. • Adds `code-based eval` evaluator type, allowing custom evaluation logic written in code; supports manual batch runs on inactive evaluators. • Adds in-app agent API key management, letting agents authenticate without leaving the Langfuse UI. • Adds initial full-text search (FTS) implementation with string filters that always use the TEXT index. • Adds support for AWS SES email transport via the default credential chain. • Adds `app root detection` to ingestion for improved trace context. • Narrows `getAutomations` by event source and event for more targeted automation queries. • Updates Bedrock authentication strategy for agent integrations.

Langfuse v3.175.0

Thu, 21 May 2026 12:44:02 GMT

Langfuse v3.175.0 adds a trace download endpoint, MCP observations access, production monitoring, and experiment metadata mapping. • Exposes `trace_context` field group in the public API for observations (v2 endpoint). • Adds a new trace download API endpoint for bulk trace retrieval. • Makes observations available via MCP (Model Context Protocol). • Adds observation type filter to dashboard widgets. • Adds experiment item metadata mapping for experiment evaluators in dashboarding. • Supports experiment dimensions and filters in the observations dashboard view. • Introduces Monitors service, Prisma schema, tRPC router, RBAC scopes, and `requireFeatureFlag` middleware as the foundation for production monitoring. • Adds production monitoring evaluator templates for the worker. • Adds new Gemini models to the model catalog. • In-app agent scaffolding added to the web UI.

Langfuse v3.174.0

Wed, 13 May 2026 11:33:08 GMT

Langfuse v3.174.0 adds email verification on signup, configurable blob-export field groups, and exposes exportSource/exportFieldGroups in the public REST API. • Exposes `exportSource` and `exportFieldGroups` in the public REST API for blob exports, giving teams programmatic control over what data is included in exports. • Adds configurable `exportFieldGroups` for events export, letting operators select which field groups are included when exporting blob/event data. • Adds `exportFieldGroups` DB column with tRPC passthrough as the backend plumbing for the new field-group export feature. • Adds email verification on signup to strengthen account authentication at registration time. • Adds more default views to the v4 traces view in the web UI.

Langfuse v3.173.0

Fri, 08 May 2026 08:48:32 GMT

Langfuse v3.173.0 adds self-service SSO with DNS-verified domains, experiment metadata display, and a secondary OTEL ingestion queue. • Adds self-service SSO configuration with DNS-verified domains, letting organizations set up SSO without manual admin intervention. • Adds a secondary OTEL ingestion queue in the worker for improved OpenTelemetry ingest handling. • Displays metadata in the experiments overview for richer experiment context at a glance.

Langfuse v3.172.0

Wed, 29 Apr 2026 05:49:05 GMT

Langfuse v3.172.0 adds a 'none' tag filter mode in the traces sidebar and introduces the LANGFUSE_ENABLE_EVENTS_TABLE_UI flag. • Adds `LANGFUSE_ENABLE_EVENTS_TABLE_UI` environment variable to enable the UI events table feature. • Adds a 'none' filter mode for tags in the traces sidebar, allowing users to filter for traces with no tags applied.

Langfuse v3.171.0

Mon, 27 Apr 2026 04:34:10 GMT

Langfuse v3.171.0 allows annotation-sourced scores via the public API and adds GPT-5.5 model pricing. • Supports `source=ANNOTATION` on `POST /api/public/scores`, enabling human annotation scores to be submitted directly through the public scores API. • Adds GPT-5.5 to built-in model price definitions for automatic cost tracking.

Langfuse v3.170.0

Thu, 23 Apr 2026 15:10:03 GMT

Langfuse v3.170.0 adds unstable evals public API endpoints, a DELETE endpoint for LLM connections, configurable OIDC token signing, and new blob storage export frequencies. • Adds unstable evals public API endpoints for triggering and managing evaluations programmatically. • Adds `DELETE` endpoint for LLM connections via the public API. • Adds `DATABASE_URL` special-character warning on migration failure to surface encoding issues early. • Supports configuration of the ID Token signed response algorithm for OIDC/auth via new config option. • Emits `.rate` and `.time` metrics with shard tags for DataDog aggregation, enabling per-shard observability. • Adds 5-minute and 20-minute blob storage export frequency options alongside existing intervals. • Adds time window filtering to prompt metrics in the prompts UI. • Adds a region selector to the user menu for cloud deployments. • Detects SDK version from the `langfuse events` table and surfaces it in the UI. • Adds support to trigger evaluations from experiments, including an enabled toggle for remote dataset run triggers. • Adds a floating multi-select action bar in the UI for bulk operations on table rows. • Distinguishes between available and called tools in dashboard widget filters. • Decodes unicode escapes in PrettyJsonView for clearer trace detail display.

Langfuse v3.168.0

Fri, 17 Apr 2026 08:39:27 GMT

Langfuse v3.168.0 adds AWS Bedrock Bearer Token auth, OCI Object Storage with IAM, and claude-opus-4-7 pricing. • Adds support for AWS Bedrock API Keys (Bearer Tokens) as an authentication method for LLM connections. • Adds OCI Object Storage integration via native SDK with IAM authentication options for self-hosted blob storage. • Adds built-in model pricing for `claude-opus-4-7`. • Slack prompt change notifications now include the name of the change author. • Experiments feature released to public beta on cloud, with direct-write for prompt experiment root events improving write performance. • New tracing setup page with prompt guidance to help users instrument their applications.

Langfuse v3.166.0

Wed, 08 Apr 2026 17:03:52 GMT

Langfuse v3.166.0 adds a `fields` parameter to the GetTraceById API endpoint for selective field retrieval. • Adds `fields` parameter to the `GetTraceById` API endpoint, allowing callers to request only specific fields and reduce response payload size.

Langfuse v3.165.0

Wed, 08 Apr 2026 11:26:06 GMT

Langfuse v3.165.0 adds TEXT (free-form) score support via the public API and OTEL oversized-request warnings. • Exposes `TEXT` (free-form) scores via the public API, enabling unstructured string score values alongside numeric and categorical scores. • Warns when OTEL request bodies exceed 16 MB, surfacing oversized payload issues before they cause silent data loss.

Langfuse v3.164.0

Tue, 07 Apr 2026 09:37:12 GMT

Langfuse v3.164.0 adds full-text search on input/output in table views, more fields in blob storage exports, and a new env var to exclude projects from experiment backfill. • Adds environment variable to exclude specific project IDs from experiment backfill processing (`feat(worker): add env var to exclude project IDs from experiment backfill`). • Expands v3 and v4 blob storage exports with additional fields. • Adds full-text search targeting input/output directly in table UI views.

Langfuse v3.163.0

Tue, 31 Mar 2026 16:36:39 GMT

Langfuse v3.163.0 adds boolean LLM-as-a-judge scores, tool-name filtering for evals, session/dataset-run IDs in blob exports, and a $4K default cloud spend alert. • Adds `session_id` field to the scores blob storage export pipeline. • Adds `dataset_run_id` field to the scores blob storage export pipeline. • Extends `LANGFUSE_DELETE_SKIP_PROJECT_IDS` (renamed from `LANGFUSE_TRACE_DELETE_SKIP_PROJECT_IDS`) to also apply to score deletions, not just trace deletions. • Adds boolean score type support for LLM-as-a-judge evaluators, alongside the existing numeric and categorical types. • Allows LLM-as-a-judge evaluators to filter observations by tool names and tool call count. • Adds Redis command and socket timeouts via new configuration for fail-fast behavior during Redis outages. • Adds SSE-based query progress streaming for dashboard widgets in the frontend. • Adds a 'Run Experiment' dialog directly on the Experiments page. • Adds a duplicate folder action for prompts. • Adds a universal $4K default spend alert for all cloud plans. • Applies trace-equivalent rate limits to score deletion API endpoints. Breaking changes: • The environment variable `LANGFUSE_TRACE_DELETE_SKIP_PROJECT_IDS` is renamed to `LANGFUSE_DELETE_SKIP_PROJECT_IDS`; self-hosted instances using the old name must update their configuration.

Langfuse v3.162.0

Tue, 24 Mar 2026 15:28:17 GMT

Langfuse v3.162.0 adds error-level filtering in dashboard widgets, paginated experiments, SSE streaming for query progress, and gzip blob exports. • Adds an environment variable to enable single-level query optimization for v1 ClickHouse queries, allowing operators to tune query performance without code changes. • Adds a Server-Sent Events (SSE) streaming endpoint for ClickHouse query progress, enabling dashboards to surface live query status. • Adds gzip compression support for blob storage exports, reducing export payload sizes. • Enables error-level filtering in custom dashboard widgets so practitioners can scope charts to specific log severity levels. • Adds pagination to the experiments list for navigating large experiment sets.

Langfuse v3.161.0

Sun, 22 Mar 2026 09:32:51 GMT

Langfuse v3.161.0 adds Genkit OTel support, categorical LLM-as-a-judge eval outputs, gpt-5.4-mini/nano model support, and auto-created spend alerts. • Adds `createdAt` parameter to the `POST /dataset-run-items` API, allowing back-dated dataset run item creation. • Supports Genkit spans in the OTel (OpenTelemetry) pipeline, enabling Genkit-instrumented apps to send traces to Langfuse. • Adds support for `gpt-5.4-mini` and `gpt-5.4-nano` models in model definitions and cost tracking. • Supports categorical outputs in LLM-as-a-judge evaluations, allowing eval templates to return discrete label categories rather than only numeric scores. • Auto-creates default spend alerts when new billing subscriptions are activated.

Langfuse v3.160.0

Tue, 17 Mar 2026 15:58:11 GMT

Langfuse v3.160.0 adds OpenTelemetry Pydantic gen AI system instructions mapping, blob storage export failure email alerts, and Gemini Live 2.5 Flash Native Audio pricing. • Adds `ai.system` instructions mapping for Pydantic gen AI spans via OpenTelemetry (`feat(otel): pydantic gen ai.system instructions mapping`). • Sends email notifications to project admins when a blob storage export job fails. • Adds model pricing for `gemini-live-2.5-flash-native-audio`.

Langfuse v3.159.0

Mon, 16 Mar 2026 10:48:38 GMT

Langfuse v3.159.0 adds blob storage sync status badges, prompt label bulk selection, and ingestion event replay. • Adds 'Select all N / Clear' bulk-selection links and a combined search-and-create input for custom prompt labels in prompt management. • Shows a sync status badge and error alert in blob storage settings so operators can see integration health at a glance. • Adds ingestion event replay (v2) to re-process previously ingested events. • Adds a documentation link for backfilling on observation-level LLM-as-a-judge evaluations.

Langfuse v3.158.0

Fri, 13 Mar 2026 08:59:56 GMT

Langfuse v3.158.0 adds eval config blocking, unresolved prompt fetches in the v2 API, a blob storage status endpoint, and fulltext search in the playground. • Adds unresolved prompt fetches to the v2 prompts API, exposing fetch state directly in API responses. • Adds a blob storage integration status endpoint with error tracking for diagnosing storage integration health. • Adds eval config blocking to prevent misconfigured evaluators from running. • Enables fulltext search across message windows in the playground and prompt editor. • Allows project members (not just admins) to edit LLM tools in the UI. • Adds media and blob batch cleaner that runs on project deletion to clean up associated storage objects. • Introduces an intro dialog for the Fast (Preview) dashboard toggle, now promoted from beta to preview.

Langfuse v3.157.0

Tue, 10 Mar 2026 09:41:59 GMT

Langfuse v3.157.0 adds GPT-5.4 model support, LLM-as-a-judge environment hiding, and saved-views slide-in panel. • Adds `gpt-5.4` to the supported models list for cost tracking and evaluation. • LLM-as-a-judge environment variables are now hidden by default in the filters UI to reduce noise. • Saved views panel now slides in from the left for improved navigation. • Trace-level scores are now surfaced in the observation-level score table in the events view. • Users can now filter directly from the trace detail view. • Events table gains a public/private visibility toggle per event. • Type filter is now included by default in the expanded events table.

Langfuse v3.156.0

Thu, 05 Mar 2026 17:13:43 GMT

Langfuse v3.156.0 adds ClickHouse Cloud auth, LiveKit OTEL span parsing, SSO tokenEndpointAuthMethod, thinking-parts support in playground/evals, and typed ObservationsV2Response. • Adds `tokenEndpointAuthMethod` support to multi-tenant SSO configurations. • Adds `extraHeaders` support for the Anthropic adapter in LLM connections. • Types the `data` field of `ObservationsV2Response` instead of `map`, giving callers a concrete schema. • Adds ClickHouse Cloud authentication provider for self-hosted deployments. • Parses LiveKit attributes on OpenTelemetry spans, surfacing LiveKit trace data natively. • Supports 'thinking parts' in the playground and evals, enabling reasoning-model workflows. • Includes triggering user info in webhook and GitHub dispatch payloads. • Maps input/output to the Pydantic root span in the trace UI. • Enables ClickHouse query condition caching for analytics queries, reducing latency at scale. • Adds dashboard widget definition version tracking. • Validates that high-cardinality dimensions require a top-N shape on the v2 dashboard path, preventing misconfigured widgets. • Shows full trace data on hover at small row height in the trace table. • Defaults to hiding Langfuse environments in the filters UI to reduce noise. • Adds the `analytics_events_core` ClickHouse view.

Langfuse v3.155.1

Mon, 23 Feb 2026 17:10:05 GMT

Langfuse v3.155.1 adds an experiments section with routing and admin controls, plus evaluation prompt hover previews. • Adds experiments pages with routing and admin flag checks for access control. • Shows evaluation prompts on hover in the evals UI for quick inspection without leaving the page. • Improves chart loading states and failure hints in the web UI for clearer feedback when dashboards fail to load. • Passes v2 metrics version to custom dashboard widgets, enabling accurate metric versioning in user-defined dashboard views.

Langfuse v3.155.0

Fri, 20 Feb 2026 16:42:50 GMT

Langfuse v3.155.0 adds historical single-observation evals, batch dataset actions on events, and Gemini 2.5 Pro Preview pricing support. • Adds `metricsVersion` prop to dashboard components to enable switching to the v4 Beta metrics engine. • Adds `position` and `level` as filterable dimensions in the trace events table. • Adds historical/batched single-observation evaluation runs, enabling eval pipelines over past observation data. • Adds a batch action to add events from the events table directly to a dataset. • Adds pricing and model support for `gemini-3.1-pro-preview` in the model prices registry. • Adds Japanese character support in prompt template variables. • Adds bloom filter indexes on `user_id` and `session_id` in the events table for faster lookups. • Adds single-step session aggregation via a new `EventsSessionAggregationQueryBuilder`. • Adds tooltip support and icon rendering to filter facets in the events table UI. • Adds v2 backend query paths for score-aggregate, score-histogram, and `ModelUsageChart` cost/usage-by-type timeseries dashboard charts. • Adds delay metrics instrumentation for the event propagation job in the worker.

Langfuse v3.154.0

Thu, 19 Feb 2026 09:30:52 GMT

Langfuse v3.154.0 adds single-span evals in open beta, performance controls for `GET /api/public/traces`, and configurable Redis cluster timeouts. • Adds performance controls for `GET /api/public/traces` to tune query behavior on large datasets. • Makes `slotsRefreshTimeout` configurable for Redis cluster deployments. • Releases single-span (observation-level) evaluations in open beta, including a 'parent observation is null' filter for targeting root spans. • Adds project-level default settings for tables, letting admins set column/filter defaults across an entire project. • Supports deleting entire prompt folders in the Prompts UI. • Adds table display support in the peek (side-panel) view. • Adds Claude Sonnet 4.6 model pricing to cost tracking. Breaking changes: • The `parseIoAsJson` option on the observations v2 API is retired — requests that set it to `true` now receive a `400` error.

Langfuse v3.153.0

Thu, 12 Feb 2026 18:01:03 GMT

Langfuse v3.153.0 adds observation-level LLM-as-a-judge evals, advanced scores v2 API filtering, MCP prompt filters, and events table exports. • Adds `observation_id` as a filter parameter on the scores v2 API endpoint, enabling per-observation score queries. • Adds advanced filter support on the scores v2 endpoint, unlocking complex multi-condition score queries via the API. • Adds `updatedAt` range filters to the `listPrompts` MCP tool, letting callers retrieve only recently changed prompts. • Adds events table to integration exports, making raw event data available for external pipelines. • Supports running LLM-as-a-judge evaluations at the observation level, not just the trace level. • Supports observation-level evaluations inside prompt experiments. • Adds a default filter active-status option for eval configurations. • Adds a clickable trace reference badge in LLM-as-a-judge evaluation traces in the UI. • Adds a `traceName` column to the events table. • Adds pricing support for the `opus-4-6` model.

Langfuse v3.152.0

Sun, 08 Feb 2026 16:45:19 GMT

Langfuse v3.152.0 adds server-side ingestion masking for OpenTelemetry traces. • Adds server-side ingestion masking for OTEL traces, enabling sensitive data to be redacted at ingest time before storage.

Langfuse v3.151.0

Fri, 06 Feb 2026 10:51:49 GMT

Langfuse v3.151.0 adds dataset versioning, a prompts filter-options endpoint, and a parentObservationId null filter for the observations API. • Adds `GET /api/public/prompts/filterOptions` endpoint to retrieve filterable metadata for prompts. • Adds `parentObservationId` null filter to the observations public API, enabling queries for root-level observations only. • Implements dataset versioning support across APIs and schemas, with version resolution for experiment runs in the UI. • Introduces `preferredClickhouseService: EventsReadOnly` configuration option for routing reads to an events-only ClickHouse replica. • Adds a v4 event-based session view in the UI.

Langfuse v3.150.0

Wed, 28 Jan 2026 13:52:27 GMT

Langfuse v3.150.0 adds single-observation evaluations for LLM-as-a-judge workflows. • Adds single observation evals, enabling LLM-as-a-judge evaluation to target individual observations rather than full traces.

Langfuse v3.149.0

Tue, 27 Jan 2026 15:38:53 GMT

Langfuse v3.149.0 adds an events-based trace/observation table, corrected output rendering, thinking budget for Vertex Gemini, and multi-org access provisioning. • Adds support for multiple default orgs/projects in automated access provisioning configuration, enabling broader SSO/SCIM onboarding rules. • Adds a thinking budget setting for Vertex Gemini models in the playground. • Adds an events-based observation/trace table with experiment filters, trace ID filter, scores, and session/user ID columns in the UI. • Adds footer rendering for corrected output in the IO Preview panel when corrections are enabled. • Adds preflight checks for delete operations on events, observations, and traces to guard against unsafe deletions. • Adds breadcrumb navigation to prompt and dataset detail pages. • Pre-filters Langfuse built-in evaluators out of the LLM-as-a-judge eval creation flow to reduce noise.

Langfuse v3.148.0

Wed, 21 Jan 2026 08:27:29 GMT

Langfuse v3.148.0 adds thinking/reasoning trace rendering, an org-level audit log viewer, and batch-oriented periodic retention jobs. • Adds an organization-level audit log viewer so admins can review org-wide activity from the UI. • Renders thinking and reasoning parts (including on tool-call-only traces) inline in the trace detail view. • Introduces batch-oriented periodic jobs as an alternative to the retention queue for data lifecycle management.

Langfuse v3.147.0

Thu, 15 Jan 2026 10:07:32 GMT

Langfuse v3.147.0 adds corrections diff viewer, JSON validation toggle, and LiteLLM custom trace ID mapping via OpenTelemetry. • Adds support for mapping custom `trace_id` from LiteLLM via the OpenTelemetry ingestion pipeline. • Adds a JSON validation toggle for corrections, letting users control whether correction inputs are validated as JSON. • Adds a global toggle to show or hide corrections inside session and IO preview components. • Adds a diff viewer to corrections, showing a side-by-side comparison of actual vs. corrected output. • Adds cursor-based sequential processing for event propagation, improving reliability of event ordering at scale. • Introduces `BatchProjectCleaner` backed by BullMQ to efficiently handle bulk project deletions, including dataset run items.

Langfuse v3.146.0

Thu, 08 Jan 2026 19:51:29 GMT

Adds `CLICKHOUSE_ASYNC_INSERT_BUSY_TIMEOUT_MIN_MS` setting and high-cardinality measure support in the v2 metrics API. • Adds `CLICKHOUSE_ASYNC_INSERT_BUSY_TIMEOUT_MIN_MS` environment variable to tune ClickHouse async insert busy-timeout behavior. • Allows high-cardinality measures in `v2/metrics` API endpoint when using `topN` queries.

Langfuse v3.145.0

Wed, 07 Jan 2026 09:46:39 GMT

Langfuse v3.145.0 adds inline trace comments on partial IO data and selective metadata expansion on observations-v2 endpoints. • Adds selective expansion of metadata on `observations-v2` API endpoints, allowing callers to request metadata only when needed. • Adds inline comments on fractions of trace input/output data, enabling annotation at the sub-message level in the trace UI.

Langfuse v3.144.0

Tue, 06 Jan 2026 10:06:13 GMT

Langfuse v3.144.0 adds corrections to trace/observation previews, a trace refresh button, and a filter clear-all button. • Adds a fields API for the scores v2 API endpoint, enabling more targeted score data retrieval. • Adds corrections to the trace and observation preview panel in the UI. • Adds a refresh button to the traces view, supporting both manual and periodic refresh. • Adds a 'clear all' button to the filters UI for faster filter resets.

Langfuse v3.143.0

Tue, 23 Dec 2025 22:53:12 GMT

Langfuse v3.143.0 adds tool-call observation filtering, org details in the project API, and a virtualized JSON viewer with search and media. • Adds org details to the project API endpoint, exposing organization-level context alongside project data. • Enables filtering observations by tool calls in the tracing UI, letting practitioners narrow traces to specific tool invocations. • Introduces a fully virtualized JSON Beta view with search and media attachment support in the advanced JSON viewer.

Langfuse v3.141.0

Fri, 19 Dec 2025 13:56:49 GMT

Langfuse v3.141.0 adds a JSON viewer for large trace I/O and improves model-price matching with provider-prefix support. • Adds a JSON viewer for performant rendering of large JSON inputs and outputs in the trace detail view (currently in beta). • Extends model-price matching to recognize models when a provider prefix is present in the model name. • Hides the tags section in the trace UI when no tags exist, reducing visual noise.

Langfuse v3.140.0

Mon, 15 Dec 2025 08:40:01 GMT

Langfuse v3.140.0 adds batch dataset observation ingestion, Vertex AI Application Default Credentials, and a model name filter for observation widgets. • Adds `dataset_item_version` column to the `dataset_run_items_rmt` and `events` tables, enabling version-aware dataset run tracking. • Adds Application Default Credentials (ADC) support for Vertex AI in LLM integrations, removing the need for explicit key configuration in GCP environments. • Adds model name filter to observation widgets in the UI, allowing users to narrow dashboard views by specific model. • Adds `update_parallel_mode` ClickHouse option passthrough for query configuration. • Supports batch adding observations to a dataset in a single operation. • Adds pricing data for `gpt-5.2` to the built-in model price catalog.

Langfuse v3.139.0

Wed, 10 Dec 2025 09:37:50 GMT

Langfuse v3.139.0 adds RTL language support in editors, unresolved prompt fetching for composition analysis, and v2/v1 metrics compatibility. • Adds unresolved prompt fetching for prompt composition analysis, enabling inspection of prompts before variable resolution. • Supports right-to-left (RTL) languages in editors and prompt editing views. • Makes v2 metrics completely compatible with v1, unifying metric behavior across API versions. • Adds dismissable documentation nudges in the trace peek view.

Langfuse v3.138.0

Mon, 08 Dec 2025 10:38:56 GMT

Langfuse v3.138.0 adds a DELETE API for prompts, SSO provider visibility in org tables, and improved OpenTelemetry/Pydantic tracing support. • Adds `DELETE` endpoint for prompts, enabling programmatic deletion of prompt versions via the API. • Adds SSO provider column to the organization members table in the UI, surfacing which SSO provider each member uses. • Maps OpenTelemetry observation types for `gen_ai` (e.g. Pydantic AI) spans, improving OTEL ingestion compatibility. • Renders Pydantic tool calls in a structured, human-readable format in the trace view. • Adds `trace_name` column to the event table definition, expanding queryable fields on events.

Langfuse v3.137.0

Wed, 03 Dec 2025 18:57:06 GMT

Langfuse v3.137.0 adds a metrics v2 API endpoint backed by the events table. • Adds a metrics v2 API endpoint based on the events table, providing an updated data source for querying usage metrics.

Langfuse v3.136.0

Wed, 03 Dec 2025 12:46:28 GMT

Langfuse v3.136.0 adds OpenTelemetry LLM message mapping, Bedrock/VertexAI LLM connection config, Keycloak custom naming, and eval table filters. • Adds environment variable `LANGFUSE_TRACE_DELETE_SKIP_PROJECT_IDS` to drain specific deletions for a specified project, giving operators fine-grained control over trace deletion queues. • Extends the LLM Connections API to allow setting provider-specific config for Bedrock and VertexAI integrations. • Supports setting a custom Keycloak provider name via the auth configuration. • Adds `CANCELLED` status to `BatchExportStatus` and handles cancellation during job processing. • Maps `llm.input_messages` and `llm.output_messages` OpenTelemetry semantic conventions for OTEL-based ingestion. • Adds a filter sidebar to the LLM-as-a-judge eval table for narrowing evaluation results. • Supports setting a custom Google AI base URL in LLM connection configuration.

Langfuse v3.135.0

Fri, 28 Nov 2025 16:52:47 GMT

Langfuse v3.135.0 adds comment filtering across traces, sessions, and observations, model pricing tiers, and a new parallel-test trace viewer UI. • Adds comment filtering to traces, sessions, and observations in the UI. • Adds model pricing tiers support for more granular cost tracking. • Introduces a new trace viewer UI (`trace2`) for parallel testing of the trace display. • Adds pricing for the `claude-opus-4.5` model.

Langfuse v3.134.0

Mon, 24 Nov 2025 19:18:19 GMT

Langfuse v3.134.0 adds extra TLS options for Redis and new ClickHouse performance tuning controls. • Adds extra TLS configuration options for Redis connections via new `REDIS_*` TLS settings. • Adds support for ClickHouse lightweight delete mode (requires ClickHouse >=25.5), configurable via a new environment variable, improving storage reclaim performance. • Improves query performance for OpenTelemetry projects by opting out of the `FINAL` modifier on observations reads in ClickHouse.

Langfuse v3.133.0

Fri, 21 Nov 2025 09:27:26 GMT

Langfuse v3.133.0 adds MCP server support, public API v2, JumpCloud IdP, and `GET /scores` filtering by `traceId`/`datasetRunId`. • Adds `GET /scores` filtering by `traceId` and `datasetRunId` query parameters in the public API. • Introduces public API v2 basic functionality. • Allows `{model}` template variable in `baseUrl` for the OpenAI adapter in LLM connections. • Implements a Model Context Protocol (MCP) server. • Adds JumpCloud as a custom IdP option for SSO authentication. • Adds `gemini-3-pro-preview` support in the playground and evaluations. • Adds GPT-5.1 model pricing.

Langfuse v3.132.0

Thu, 13 Nov 2025 16:25:41 GMT

Langfuse v3.132.0 adds comment exports, CSV schema mapping for datasets, expanded media types, and auth timeout options. • Adds `LANGFUSE_AUTH_TIMEOUT` (and related auth timeout options) plus auth proxy setup fixes via new environment variable support for self-hosted deployments. • Exports now include comments for traces, observations, and sessions. • Supports schema mapping when importing datasets via CSV in the datasets UI. • Adds additional supported media content types for media attachments. • Adds IO read-time extraction of compact representations in IO table cells.

Langfuse v3.131.0

Wed, 12 Nov 2025 14:37:37 GMT

Langfuse v3.131.0 adds data retention for Pro plans, a `timestampDay` metrics field, and resizable filter sidebar with per-column usage/latency toggles. • Adds `timestampDay` field to `scoresNumericView` and `scoresCategoricalView` for day-level time-bucketing of score metrics. • Enables data retention policy configuration for Pro plan workspaces. • Makes the filter sidebar resizable and adds a sticky header for easier navigation of long filter lists. • Adds individual toggles for usage and latency columns in the trace tree view. • Prefetches observation input/output data on hover in the trace view, reducing perceived load time. • Adds a contact sales button for Enterprise plan inquiries in the billing UI.

Langfuse v3.130.0

Tue, 11 Nov 2025 08:59:27 GMT

Langfuse v3.130.0 adds pretty rendering for Vercel AI SDK tools and shows actual base_url in the API key .env modal. • API key modal now displays the actual `base_url` value and shows a `.env` snippet directly in the new API key modal, making environment setup faster. • Pretty-renders Vercel AI SDK tool calls in the trace UI, improving readability of agentic traces. • Improves single-score mode in score analytics with a preflight check and mode-specific UI.

Langfuse v3.128.0

Fri, 07 Nov 2025 14:43:58 GMT

Langfuse v3.128.0 adds score analytics, dataset schema enforcement, Redis Sentinel support, and OpenTelemetry ai.model.id parsing. • Adds Redis Sentinel mode support for the Redis client, configurable for high-availability deployments. • Adds `ai.model.id` attribute parsing in the OpenTelemetry processor for richer model tracking in OTEL-instrumented pipelines. • Adds schema enforcement on dataset items, ensuring structured validation of inputs and outputs at ingest time. • Adds a score analytics page for visualizing and analyzing score distributions across traces. • Improves `CreateScoreRequest.metadata` OpenAPI typing for more precise API contract definitions. • Adds a `public` flag via the events table, enabling visibility control on trace events.

Langfuse v3.127.0

Thu, 06 Nov 2025 07:35:07 GMT

Langfuse v3.127.0 adds collapsible system prompts, hover name display in trace trees, and Python dict parsing in the trace UI. • Collapses long system prompts in the trace UI to reduce visual noise when inspecting verbose prompt templates. • Displays the span or step name on hover in the trace tree for faster identification without expanding nodes. • Parses Python dict syntax in the trace UI, enabling proper rendering of Python-style objects in trace inputs and outputs. • Adds dual writes for bookmarked events in the events table to keep bookmark state consistent across the new table schema.

Langfuse v3.126.0

Tue, 04 Nov 2025 19:31:51 GMT

Langfuse v3.126.0 adds tool call rendering in the trace UI and IdP-initiated SSO support. • Adds IdP-initiated SSO, allowing identity providers to initiate authentication flows directly. • Renders tool calls in the trace UI, making LLM tool-use interactions visible in trace views. • Displays IdP callback error messages on the sign-in page for clearer authentication failure feedback.

Langfuse v3.125.0

Mon, 03 Nov 2025 20:10:46 GMT

Langfuse v3.125.0 adds baseline selection and cost/latency diff views to dataset comparison. • Adds baseline selection to the dataset comparison view, letting users designate a reference experiment for side-by-side evaluation. • Adds a diff view for cost and latency metrics in the dataset comparison UI, surfacing delta values across experiment runs at a glance.

Langfuse v3.124.0

Fri, 31 Oct 2025 17:50:15 GMT

Langfuse v3.124.0 adds @mentions in comments, Authentik SSO, Bedrock cache token parsing, and org API key listing. • Adds `authentik` as a supported auth provider via the feat(auth) integration, enabling Authentik-based SSO for self-hosted deployments. • Allows listing all organization API keys using org-scoped API keys — expands the org API key permission surface. • Supports `@mentions` in comments, enabling direct user tagging within trace and observation comment threads. • Re-implements the Traces public API v1, updating the underlying execution path for the existing traces endpoint. • Adds Bedrock cache token parsing in the OpenTelemetry (OTEL) ingestion pipeline, enabling accurate cost and token accounting for Bedrock-cached responses. • Parses `tag.tags` properties on incoming OTEL spans, mapping them to Langfuse trace tags. • Enables multi-instance Docker dev setup configuration via environment variables.

Langfuse v3.123.1

Wed, 29 Oct 2025 09:22:40 GMT

Langfuse v3.123.1 adds Mixpanel integration and time-scoped filter sidebar counts. • Adds Mixpanel integration for product analytics. • Filter sidebar items and counts now respect the selected time range, giving context-accurate facet totals.

Langfuse v3.123.0

Tue, 28 Oct 2025 14:10:01 GMT

Langfuse v3.123.0 adds chunked historic blob exports and opt-in OpenTelemetry performance improvements for self-hosters. • Adds opt-in performance improvements for self-hosters using OpenTelemetry SDKs. • Implements chunked historic exports for blob/object-store export jobs, enabling reliable large-scale data exports.

Langfuse v3.122.2

Mon, 27 Oct 2025 20:11:10 GMT

Langfuse v3.122.2 adds dataset folder management, OneLogin SSO, and ADMIN_API_KEY-based LLM connection management. • Enables managing LLM connections via `ADMIN_API_KEY` on self-hosted deployments, allowing programmatic control without UI access. • Adds OneLogin as a supported authentication provider for SSO configurations. • Adds folder management support for datasets, enabling hierarchical organization of dataset entries.

Langfuse v3.122.0

Mon, 27 Oct 2025 07:56:27 GMT

Langfuse v3.122.0 adds a filter sidebar, `LANGFUSE_WHITELISTED_WEBHOOK_HOSTNAMES` env var, Claude Haiku 4.5 support, and a 7-day eval cost lookback. • Adds `LANGFUSE_WHITELISTED_WEBHOOK_HOSTNAMES` environment variable to restrict which hostnames can receive webhook callbacks. • Renames the base URL setting to `LANGFUSE_BASE_URL` in the UI configuration. • Adds a `.env` example snippet to the API keys page to guide self-hosted setup. • Introduces a collapsible filter sidebar for browsing and applying filters across tables. • Adds a 'default' option to table presets that clears a saved view back to defaults. • Adds Claude Haiku 4.5 as a supported model in the playground and evaluations. • Increases the evaluation cost lookback window to 7 days in the eval table.

Langfuse v3.121.0

Tue, 21 Oct 2025 20:18:19 GMT

Langfuse v3.121.0 adds total cost to evaluators, predefined API keys, manual review in dataset compare view, and SESSION-type annotation queues. • Adds `SESSION` enum value to annotation queues in YAML and OpenAPI definitions, enabling session-level annotation queue configuration. • Adds `totalCost` column to the evaluators table for at-a-glance cost tracking across evaluators. • Supports predefined API keys on the create API route, allowing callers to supply their own key value at creation time. • Enables manual review directly within the dataset compare view, so annotators can score runs without leaving the comparison screen.

Langfuse v3.120.0

Sun, 19 Oct 2025 15:22:11 GMT

Langfuse v3.120.0 adds unique user/session metrics to trace view, advanced filtering on the observations API, and webhook IP whitelisting. • Adds advanced filtering support to the public API observations endpoint, enabling more precise programmatic queries against observation data. • Implements observations v1 endpoints on top of the events table, expanding the API surface for observation retrieval. • Adds `uniqueUserIds` and `uniqueSessionIds` metrics to the trace view for at-a-glance audience and session coverage. • Adds webhook IP segment whitelisting to restrict which source IPs are permitted to trigger webhooks.

Langfuse v3.119.0

Fri, 17 Oct 2025 06:58:12 GMT

Langfuse v3.119.0 adds PromptType to list prompt API, LLM-as-a-judge execution tracing, WordPress SSO, and Claude Haiku 4.5 pricing. • Adds `PromptType` field to the list prompt API response, giving callers prompt type information directly from the endpoint. • Adds tracing for LLM-as-a-judge evaluation executions, making eval runs observable in the trace UI. • Adds WordPress as an SSO option for authentication. • Adds model pricing support for Claude Haiku 4.5. • Adds in-app notification banner for unpaid or past-due billing subscriptions.

Langfuse v3.118.0

Wed, 15 Oct 2025 15:46:34 GMT

Langfuse v3.118.0 adds `queueId` support in the scores ingestion API and introduces an events repository for the observations UI table. • Supports `queueId` when creating a score via the ingestion API, enabling scores to be routed to specific annotation queues at ingest time. • Introduces an events repository capable of serving the observations UI table, extending the data layer for trace event display. • Propagates LiteLLM `requester_metadata` when jumping from the playground, preserving request context through to the LiteLLM layer. • Decodes Unicode characters in truncated JSONs in the trace table, improving readability of non-ASCII payloads.

Langfuse v3.117.0

Fri, 10 Oct 2025 12:19:38 GMT

Langfuse v3.117.0 adds named prompt experiment runs, self-serve account deletion, and improved Docker Compose flexibility for self-hosting. • Adds self-serve account deletion and display name update under account settings. • Allows naming runs in prompt experiments for easier identification and comparison. • Enhances Docker Compose configuration flexibility for self-hosting platforms.

Langfuse v3.116.1

Thu, 09 Oct 2025 08:44:30 GMT

Langfuse v3.116.1 adds a trace log view, LiveKit OTel support, API advanced filtering, spend alerts, and drag-and-drop CSV uploads. • Enables advanced filtering on the public API `GET /traces` endpoint (LFE-3810), bringing query parity with the UI to programmatic trace access. • Maps `gen_ai.tool.call.arguments` and `gen_ai.tool.call.result` OTel attributes to `input`/`output` fields during ingestion, surfacing tool call data in the trace UI automatically. • Adds configurable spend alerts for paid cloud plans, letting teams set cost thresholds before bills grow unexpectedly. • Adds a log view in the trace UI that concatenates all observations into a single scrollable stream, making it easier to read end-to-end LLM interactions linearly. • Processes LiveKit semantic attributes during OTel parsing, extending OTel ingestion support to LiveKit-instrumented pipelines. • Adds `gpt-5-pro` to the model price catalog for automatic cost tracking. • Supports drag-and-drop CSV file uploads for dataset item creation. • Adds cloud region to the project and organization information panel in Settings. • Adds onboarding guidance for dataset item creation and management. • Adds horizontal scrolling to the playground as additional windows are opened side by side.

Langfuse v3.116.0

Mon, 06 Oct 2025 22:01:04 GMT

Langfuse v3.116.0 adds self-service enterprise plan, agent graph node cycling, and dataset compare view improvements. • Adds self-service enterprise plan subscription option in billing UI. • Enables cycling through observations in the agent graph by clicking individual graph nodes. • Improves the dataset compare view UI to make cells more digestible. • Expands content on hover in IO table cells for easier reading.

Langfuse v3.115.0

Thu, 02 Oct 2025 09:01:43 GMT

Langfuse v3.115.0 adds structured output support to prompt experiments. • Supports structured output in prompt experiments, enabling schema-constrained LLM responses during experiment runs.

Langfuse v3.114.0

Wed, 01 Oct 2025 09:24:37 GMT

Langfuse v3.114.0 adds Keycloak auth support and natural language filters in the trace UI. • Adds natural language filters to the trace UI, letting practitioners query traces in plain English. • Adds support for Keycloak scope and ID token configuration for OIDC auth. • Redesigns dataset item detail view to show item I/O and past runs in two separate tabs.

Langfuse v3.113.0

Tue, 30 Sep 2025 07:03:57 GMT

Langfuse v3.113.0 adds mutable score configs, per-run dataset filtering, OTEL response model parsing, and Claude Sonnet 4.5 playground support. • Adds `llm.response.model` parsing to the OpenTelemetry ingestion pipeline, enabling response model attribution from OTEL spans. • Supports mutability on score configs, allowing score configurations to be updated after creation. • Adds per-run filtering in the dataset compare table, enabling side-by-side evaluation across specific dataset runs. • Adds a search bar to the members table for faster user lookup in large organizations. • Adds Claude Sonnet 4.5 support to the playground. • Improves time range filtering across the UI with more precise date range controls. • Displays the last authentication method used on the login screen. • Shows active promotion codes in billing settings and adds an option to apply discount codes to active subscriptions. • Allows past subscribers to view their historical invoices in billing settings.

Langfuse v3.112.0

Thu, 18 Sep 2025 08:53:43 GMT

Langfuse v3.112.0 adds sessionId filtering to the GET /scores API endpoint. • Adds `sessionId` filter parameter to the `GET /scores` API endpoint, enabling retrieval of scores scoped to a specific session.

Langfuse v3.111.0

Mon, 15 Sep 2025 06:29:20 GMT

Langfuse v3.111.0 extends PostHog integration to export non-trace scores alongside existing trace data. • Exports non-trace scores (e.g. session and span-level scores) via the PostHog integration, expanding beyond trace-only score forwarding. • Includes ticket ID in support email subjects, making it easier to correlate in-app support requests with email threads.

Langfuse v3.110.0

Thu, 11 Sep 2025 12:13:29 GMT

Langfuse v3.110.0 adds a blob storage config API endpoint, GCP Vertex tool I/O on OTel spans, and UI improvements for sessions and dataset runs. • Adds an API endpoint to configure the blob storage integration programmatically. • Captures GCP Vertex tool inputs and outputs on OpenTelemetry spans. • Pins the dataset item ID column in the dataset run items UI table for easier reference. • Adds a trace detail peek view to the sessions page and cleans up its layout.

Langfuse v3.109.0

Wed, 10 Sep 2025 11:54:59 GMT

Langfuse v3.109.0 adds total cost column to dataset runs, score filters in dataset run items, and custom select filters in dashboard widgets. • Adds score filters to the dataset run items UI table, letting users filter run items by evaluation scores directly in the table view. • Adds a total cost column to the dataset runs table for at-a-glance cost tracking across runs. • Allows custom select filters in the dashboard widget flow, enabling more targeted metric views. • Pins select, annotation, and prompt metrics columns on horizontal and vertical scroll so key columns remain visible during table navigation. • Adds IP allowlist support for webhooks.

Langfuse v3.108.0

Fri, 05 Sep 2025 13:07:20 GMT

Langfuse v3.108.0 revamps in-app support with acknowledgement emails and adds a structured GitHub Discussions form. • Revamps the in-app support experience with a new interface and adds a structured form for GitHub Discussions. • Sends an acknowledgement email to users automatically when a new support thread is created. • Delivers styling improvements to agent graphs in the trace UI.

Langfuse v3.107.0

Wed, 03 Sep 2025 16:09:20 GMT

Langfuse v3.107.0 adds score column filtering to show only populated scores in table views. • Score columns in table views now filter to display only rows where a score value exists for the given column, reducing noise in sparse score tables.

Langfuse v3.106.4

Wed, 03 Sep 2025 10:03:13 GMT

Langfuse v3.106.4 adds copy button on JSON value cells in trace view and maps OpenTelemetry gen_ai message fields to trace input/output. • Maps `gen_ai.input.messages` and `gen_ai.output.messages` OpenTelemetry semantic convention fields to trace input/output fields. • Adds a copy button on value cells in the JSON view of the single-trace detail panel.

Langfuse v3.106.0

Thu, 28 Aug 2025 14:47:50 GMT

Langfuse v3.106.0 adds graph views for new observation types in tracing. • Adds graph views for new observation types in the tracing UI.

Langfuse v3.105.0

Thu, 28 Aug 2025 07:49:16 GMT

Langfuse v3.105.0 adds score filters to dataset-run UI tables and shows Source ID in the Annotation Queue Items table. • Adds score filters to dataset-run UI tables, enabling filtering of runs by score values directly in the interface. • Shows Source ID as a column in the Annotation Queue Items table for easier traceability.

Langfuse v3.104.0

Wed, 27 Aug 2025 09:59:04 GMT

Langfuse v3.104.0 adds OpenTelemetry parsing for Vercel AI SDK `ai.usage.*` attributes. • Parses Vercel AI SDK `ai.usage.*` attributes via OpenTelemetry ingestion, enabling usage tracking for Vercel AI SDK traces.

Langfuse v3.103.0

Mon, 25 Aug 2025 12:13:20 GMT

Langfuse v3.103.0 adds full-text search and metadata filtering for dataset items, plus dashboard filter persistence. • Adds full-text search for dataset items in the datasets UI. • Enables filtering dataset items by metadata keys in the dataset items UI. • Adds dashboard filter persistence so filter selections are retained across sessions.

Langfuse v3.102.0

Thu, 21 Aug 2025 16:01:15 GMT

Langfuse v3.102.0 adds observation type mapping for OpenInference, OpenAI, and Vercel AI SDK traces. • Maps OpenInference and OpenAI spans to new Langfuse observation types for richer tracing fidelity. • Maps Vercel AI SDK spans to new Langfuse observation types, expanding structured trace support for that SDK.

Langfuse v3.101.0

Thu, 21 Aug 2025 12:43:46 GMT

Langfuse v3.101.0 adds opt-out of blob-storage file logging for lifecycle-policed buckets. • Adds opt-out of blob-storage file logging to support buckets governed by lifecycle policies, preventing conflicts with automated retention rules.

Langfuse v3.100.0

Thu, 21 Aug 2025 08:27:36 GMT

Langfuse v3.100.0 adds variable highlighting in prompt content and improved trace-tree search. • Highlights variables in prompt content for easier identification. • Improves search in trace detail view for better compatibility with the new trace tree. • Improves comments display in the annotation drawer with a dedicated panel.

Langfuse v3.99.0

Tue, 19 Aug 2025 08:27:52 GMT

Langfuse v3.99.0 adds membership deletion API endpoints, dataset item copying, and trace tree view improvements. • Adds membership deletion API endpoints, enabling programmatic removal of project members. • Allows copying items within the same source dataset in the Datasets UI. • Improves the trace detail tree view with unspecified UX enhancements and better contrast for the selected span.

Langfuse v3.98.2

Thu, 14 Aug 2025 15:05:17 GMT

Langfuse v3.98.2 expands observation type coverage in the traces view. • Adds support for more observation types in the traces view.

Langfuse v3.98.0

Thu, 14 Aug 2025 12:39:56 GMT

Langfuse v3.98.0 adds support for additional provider options in LLM invocations. • Supports additional provider options when configuring LLM invocations.

Langfuse v3.97.3

Wed, 13 Aug 2025 09:39:18 GMT

Langfuse v3.97.3 adds a POST API for annotation queues and GCP region population in LLM connection forms. • Adds `POST` queue API endpoint for annotations, enabling programmatic creation of annotation queues. • Populates GCP region automatically in the LLM connections update form, reducing manual configuration steps.

Langfuse v3.97.0

Mon, 11 Aug 2025 17:24:04 GMT

Langfuse v3.97.0 adds HTTPS proxy support for LLM API calls and author field in score exports. • Adds `author` field to score exports, surfacing who created each score in exported data. • Adds HTTPS proxy support for LLM API calls, enabling routing of model requests through a proxy. • Allows removing user assignments from annotation tasks directly in the UI.

Langfuse v3.96.0

Fri, 08 Aug 2025 12:21:01 GMT

Langfuse v3.96.0 adds sorting support to pivot tables. • Adds sorting capability to pivot tables in the analytics UI.

Langfuse v3.95.0

Thu, 07 Aug 2025 09:56:01 GMT

Langfuse v3.95.0 adds user assignment to annotation queues. • Enables assigning specific users to annotation queues, allowing teams to route annotation work to designated reviewers.

Langfuse v3.94.0

Thu, 07 Aug 2025 08:31:08 GMT

Langfuse v3.94.0 adds Vercel AI SDK OpenTelemetry parsing, `langfuse_trace_id` in PostHog, and claude-opus-4-1-20250805 model support. • Adds `langfuse_trace_id` to generations and scores in the PostHog integration, enabling cross-platform correlation of LLM events. • Adds OpenTelemetry span parsing for the Vercel AI SDK, enabling automatic trace ingestion from Vercel AI SDK instrumented apps. • Adds built-in model definition for `claude-opus-4-1-20250805`. • Adds tooltips for evaluator usage and target fields in evaluator edit mode.

Langfuse v3.93.0

Tue, 05 Aug 2025 14:56:38 GMT

Langfuse v3.93.0 improves the UX for managing LLM connections in settings. • Improves the user experience for managing LLM connections in the settings UI.

Langfuse v3.92.0

Tue, 05 Aug 2025 08:02:34 GMT

Langfuse v3.92.0 adds public API methods for LLM API keys and score-based filtering on the Sessions table. • Adds public API methods for managing LLM API keys. • Enables filtering the Sessions table by scores in the UI.

Langfuse v3.91.0

Mon, 04 Aug 2025 09:34:17 GMT

Langfuse v3.91.0 adds batch observation queuing, a reads router for dataset run items, and evaluator config edit mode. • Adds support for batch adding observations to annotation queues, enabling bulk queue management workflows. • Adds edit mode functionality to the peek evaluator config panel, allowing inline evaluator configuration changes. • Introduces a reads router for dataset run items, improving data access routing for dataset experiments. • Removes the Atla LLM connection integration.

Langfuse v3.90.0

Thu, 31 Jul 2025 18:53:53 GMT

Langfuse v3.90.0 adds PUT support on the SCIM users endpoint and Redis username configuration via environment variable. • Supports `PUT` operations on the SCIM users endpoint, enabling full user-update workflows via SCIM provisioning. • Allows Redis username to be overridden via environment variables, enabling authenticated Redis connections without code changes.

Langfuse v3.89.0

Wed, 30 Jul 2025 14:10:46 GMT

Langfuse v3.89.0 adds Slack integration, billing alerts, and public API support for dataset run items. • Adds public API support for reading dataset run items. • New Slack integration for notifications and alerting. • Adds billing alerts for cloud deployments.

Langfuse v3.88.0

Tue, 29 Jul 2025 18:27:45 GMT

Langfuse v3.88.0 adds experiment service writes for dataset run items. • Implements experiment service writes for dataset run items, enabling structured experiment tracking through the experiment service layer.

Langfuse v3.87.0

Mon, 28 Jul 2025 22:16:17 GMT

Langfuse v3.87.0 adds batch session addition to annotation queues and deletion support for dataset run items. • Supports batch adding sessions to annotation queues, reducing manual queue management overhead. • Enables deletion of dataset run items for ClickHouse writes, allowing cleanup of unwanted dataset run entries.

Langfuse v3.86.1

Mon, 28 Jul 2025 10:57:00 GMT

Langfuse v3.86.1 adds annotation support for sessions and remote experiment triggering. • Enables annotation on sessions, bringing session objects into the annotation queue workflow alongside existing trace annotations. • Supports remote experiment triggering, allowing experiments to be initiated from external systems.

Langfuse v3.86.0

Thu, 24 Jul 2025 14:31:33 GMT

Langfuse v3.86.0 adds Okta role assignment via the admin API and persists table column sizes in local storage. • Adds Okta role assignment capabilities to the admin API, enabling automated provisioning of user roles via Okta. • Persists table column sizes in local storage so column layout is retained across browser sessions.

Langfuse v3.85.1

Wed, 23 Jul 2025 11:58:29 GMT

Langfuse v3.85.1 adds multi-window playground and migrates dataset run items to ClickHouse. • Migrates dataset run items storage from Postgres to ClickHouse, with writes now going to ClickHouse API only. • Adds multi-window playground support for running and comparing prompts side by side.

Langfuse v3.85.0

Tue, 22 Jul 2025 14:49:16 GMT

Langfuse v3.85.0 adds arbitrary message ordering in the prompt playground and collapsible JSON tables in tracing. • Exposes `email_from_address` and `smtp_connection_url` in `docker-compose` configuration for easier email setup. • Adds a Redis key prefix option, letting operators namespace Langfuse keys within a shared Redis instance. • Allows arbitrary reordering of messages in the prompts/playground editor, giving prompt engineers full control over message sequence. • Renders JSON values in traces as collapsible tables for easier inspection of structured data.

Langfuse v3.84.0

Sun, 20 Jul 2025 07:45:23 GMT

Langfuse v3.84.0 adds automation secrets and full-text search for prompts. • Adds automation secrets for use in Langfuse automations. • Adds full-text search for prompts.

Langfuse v3.83.0

Fri, 18 Jul 2025 12:24:16 GMT

Langfuse v3.83.0 adds default credential provider chain support for Amazon Bedrock in self-hosted deployments. • Supports the default credential provider chain for Amazon Bedrock LLM connections in self-hosted Langfuse instances, removing the need to supply explicit credentials when running in AWS environments.

Langfuse v3.82.0

Thu, 17 Jul 2025 08:04:02 GMT

Langfuse v3.82.0 adds a `level` filter to the observations API and cross-region inference profile matching for Claude on Bedrock. • Adds `level` filter parameter to the observations API, enabling callers to retrieve observations filtered by log level. • Matches cross-region inference profiles for Claude models via Amazon Bedrock when calculating model prices.

Langfuse v3.81.0

Mon, 14 Jul 2025 13:24:23 GMT

Langfuse v3.81.0 enables Redis API key and prompt caching by default for self-hosted deployments. • API key and prompt caching in Redis are now enabled by default; see the self-hosting caching-features docs to opt out. Breaking changes: • Redis prompt caching and API key caching are now on by default. Self-hosted deployments without a Redis cache configured may behave differently on upgrade; review https://langfuse.com/self-hosting/caching-features to opt out.

Langfuse v3.80.0

Wed, 09 Jul 2025 17:30:53 GMT

Langfuse v3.80.0 adds custom start dates for blob storage exports and arbitrary placeholder values in the playground. • Allows a custom start date for blob storage exports, giving control over which data gets included in export jobs. • Supports arbitrary values for placeholders in the playground, enabling more flexible prompt testing without predefined variable constraints.

Langfuse v3.79.1

Wed, 09 Jul 2025 07:57:10 GMT

Langfuse v3.79.1 adds `gen_ai.conversation.id` support and monthly dashboard breakdowns. • Supports the `gen_ai.conversation.id` attribute for grouping and tracking multi-turn AI conversations. • Dashboard charts now support breakdown by month, enabling longer-horizon trend analysis alongside existing time granularities.

Langfuse v3.79.0

Mon, 07 Jul 2025 13:26:01 GMT

Langfuse v3.79.0 adds Gemini 2.5 model support, trace JSON export, prompt config filtering, and prompt-version webhooks. • Adds a trace download button in the UI that exports trace and observation metadata as JSON. • Adds prompt filtering by config in the prompts UI. • Adds webhook support for prompt version changes. • Adds Gemini 2.5 Pro and Gemini 2.5 Flash (GA) to LLM connections. • Adds Gemini 2.5 Flash Lite and Gemini 2.5 pricing to LLM connections.

Langfuse v3.78.1

Wed, 02 Jul 2025 10:16:50 GMT

Langfuse v3.78.1 adds tag-based prompt search and placeholder message histories in experiments. • Adds tag filtering to the prompts table search, letting users narrow prompts by tag. • Supports placeholders as message histories in experiments, enabling dynamic conversation context in experiment runs. • Adds a custom confirmation message when deleting a running evaluator to prevent accidental removal.

Langfuse v3.78.0

Tue, 01 Jul 2025 16:35:06 GMT

Langfuse v3.78.0 adds a search bar to the prompts table for faster prompt lookup. • Adds a search bar to the prompts table UI for filtering and locating prompts quickly.

Langfuse v3.77.0

Tue, 01 Jul 2025 11:38:06 GMT

Langfuse v3.77.0 adds environment attribute to PostHog exports and a pivot table widget for self-service dashboards. • Adds environment attribute to PostHog exports, enabling environment-level segmentation of Langfuse data in PostHog. • Adds a pivot table widget to self-service dashboards for more flexible data analysis.

Langfuse v3.76.0

Mon, 30 Jun 2025 17:17:07 GMT

Langfuse v3.76.0 adds score-value filtering in custom dashboards and placeholder support in prompt chat messages. • Supports filtering by score value in custom dashboards. • Adds placeholder support for prompt chat messages in the prompts editor.

Langfuse v3.75.3

Thu, 26 Jun 2025 12:57:24 GMT

Dashboard filter options now include all values from scoreConfig for richer widget filtering. • Expands dashboard filter options to include all values from `scoreConfig`, enabling more complete score-based filtering on widgets.

Langfuse v3.75.0

Tue, 24 Jun 2025 09:20:05 GMT

Langfuse v3.75.0 adds dataset item export and configurable GCP location for Vertex AI LLM keys. • Allows configuring GCP location for Vertex AI when setting up LLM API keys. • Adds ability to export dataset items from the UI.

Langfuse v3.74.0

Mon, 23 Jun 2025 09:45:51 GMT

Langfuse v3.74.0 persists the sidebar collapsed state across sessions. • The sidebar now remembers its collapsed or expanded state across page loads and sessions.

Langfuse v3.73.0

Wed, 18 Jun 2025 08:09:10 GMT

Langfuse v3.73.0 adds CSV export from the dashboard UI and field selection on the GET traces API. • Adds `fields` selection to the `GET /traces` API route, letting callers retrieve only the trace fields they need. • Adds CSV download from the dashboard UI with a loading state indicator.

Langfuse v3.72.0

Tue, 17 Jun 2025 10:22:06 GMT

Langfuse playground now supports non-streaming responses. • Adds non-streaming response mode to the playground, enabling request/response workflows that require a complete response before proceeding.

Langfuse v3.71.0

Mon, 16 Jun 2025 14:21:49 GMT

Langfuse v3.71.0 adds virtual folders for organizing prompts in the prompt management UI. • Introduces virtual folders for prompt management, enabling practitioners to organize prompts into folder hierarchies within the Langfuse UI.

Langfuse v3.70.0

Mon, 16 Jun 2025 11:16:03 GMT

Langfuse v3.70.0 adds Redis cluster mode, sharded ingestion queues, and OTEL trace-metadata attribute parsing. • Supports Redis cluster mode setup for self-hosted deployments, enabling horizontally scaled Redis topologies. • Adds sharded ingestion queue support, unlocking higher-throughput event ingestion for large-scale deployments. • Parses trace attributes from trace metadata in the OpenTelemetry (OTEL) integration, enriching OTEL-sourced traces with additional context.

Langfuse v3.69.0

Mon, 16 Jun 2025 07:37:02 GMT

Langfuse v3.69.0 adds export functionality to the audit log table. • Adds export functionality to the audit log table, allowing practitioners to extract audit log data from the UI.

Langfuse v3.68.0

Thu, 12 Jun 2025 15:46:32 GMT

Langfuse v3.68.0 adds o1-pro model pricing, long-running OTEL trace support, and a 2-step SSO sign-in flow. • Handles long-running traces in the OpenTelemetry ingestion pipeline, improving observability for extended LLM workflows. • Adds pricing data for the `o1-pro` model to the model prices catalog. • Introduces a 2-step sign-in flow on cloud to streamline SSO authentication.

Langfuse v3.67.0

Tue, 10 Jun 2025 23:42:31 GMT

Langfuse v3.67.0 adds o3-pro model cost tracking and expands Azure Blob Storage configuration options. • Adds `LANGFUSE_USE_AZURE_BLOB` to docker-compose configuration options, enabling Azure Blob Storage for non-cloud deployments. • Adds cost tracking support for OpenAI's o3-pro model.

Langfuse v3.66.0

Wed, 04 Jun 2025 07:25:11 GMT

Langfuse v3.66.0 adds support for new OpenTelemetry semantic event types. • Adds support for new OTEL semantic event types in trace ingestion.

Langfuse v3.64.0

Fri, 30 May 2025 09:26:56 GMT

Langfuse v3.64.0 adds model prices to the public API, host credentials for S3, and dashboard improvements. • Exposes model prices on the public API, so callers can retrieve pricing data alongside model metadata. • Supports host credentials for the blob storage S3 integration, enabling IAM role-based or instance-profile authentication without explicit key configuration. • Adds validation and 'run now' actions for blob storage integrations, so operators can test and trigger exports on demand. • Improves dashboards with mobile view support, a big-number chart type, title/description truncation, and enforced minimum widget height/width.

Langfuse v3.63.1

Wed, 28 May 2025 12:17:54 GMT

Langfuse v3.63.1 adds request header propagation through logs, evaluation log-status filtering, and claude-sonnet-4 model support. • Adds support for `claude-sonnet-4@20250514` model regex, enabling token tracking and cost attribution for Anthropic's latest model. • Allows propagation of request headers through logs, giving operators visibility into upstream request context. • Adds filtering by log status in the evaluation view, letting users narrow evaluation runs by their processing state.

Langfuse v3.63.0

Sat, 24 May 2025 12:06:14 GMT

Langfuse v3.63.0 adds an evaluator library and a new API endpoint to list projects across an organization. • Adds `GET /api/public/organizations/projects` endpoint to list all projects within an organization. • Adds an evaluator library for managing and reusing evaluators.

Langfuse v3.62.1

Thu, 22 May 2025 18:25:05 GMT

Langfuse v3.62.1 adds cost tracking and LLM key support for Claude 4 Sonnet and Opus models. • Adds cost tracking and LLM key support for Claude 4 Sonnet and Claude 4 Opus models.

Langfuse v3.62.0

Thu, 22 May 2025 14:32:34 GMT

Langfuse v3.62.0 adds OpenTelemetry 'event' observation support and AWS S3 SSE configuration for storage interactions. • Adds AWS S3 Server-Side Encryption (SSE) configuration support for all S3 interactions, enabling encrypted-at-rest storage for self-hosted deployments. • Adds support for OpenTelemetry observations of type `event`, expanding OTEL trace ingestion coverage.

Langfuse v3.61.0

Wed, 21 May 2025 09:14:23 GMT

Langfuse Custom Dashboards exit beta with draggable widgets, big number charts, and Langfuse-managed dashboard templates. • Adds a 'big number' chart type to Custom Dashboards for at-a-glance KPI display. • Makes Custom Dashboard widgets draggable, enabling free-form layout rearrangement. • Introduces Langfuse-managed dashboards: pre-built, vendor-maintained dashboard templates available out of the box. • Custom Dashboards graduate from beta to general availability.

Langfuse v3.60.0

Mon, 19 May 2025 09:17:32 GMT

Langfuse v3.60.0 adds managed read-only dashboards, command-menu dashboard search, OTP password reset, and Pipecat OTEL span mapping. • Adds Langfuse-managed read-only dashboards, providing curated, out-of-the-box dashboard views for projects. • Includes dashboards in the command-menu (cmdk) so users can search and navigate to dashboards from the keyboard shortcut menu. • Switches password reset flow from magic links to OTP-based codes. • Adds OpenTelemetry span mapping support for Pipecat traces, enabling Pipecat agent traces to be ingested and visualized in Langfuse.

Langfuse v3.59.0

Fri, 16 May 2025 12:07:09 GMT

Langfuse v3.59.0 adds Langfuse attribute parsing for OpenTelemetry and raises the default dashboard timeframe to 7 days. • Adds Langfuse attribute parsing to the OpenTelemetry (OTEL) ingestion pipeline, enabling richer trace data extraction from OTEL-instrumented applications. • Increases the default timeframe in custom dashboards to 7 days, giving a broader out-of-the-box view of LLM observability data.

Langfuse v3.58.0

Fri, 16 May 2025 04:40:43 GMT

Langfuse v3.58.0 adds dashboard cloning, auto-add widgets on save, and a new env var to show/hide product modules in the UI. • Adds `LANGFUSE_UI_VISIBLE_PRODUCT_MODULES` and `LANGFUSE_UI_HIDDEN_PRODUCT_MODULES` environment variables to show or hide product modules in the main navigation menu. • New dashboard widgets are automatically added to the dashboard immediately upon saving, eliminating a manual placement step. • Adds the ability to clone existing dashboards from the dashboard UI. • Adds inline documentation hovers on widget properties in the dashboard editor to surface contextual help.

Langfuse v3.57.1

Tue, 13 May 2025 14:54:40 GMT

Langfuse v3.57.1 adds a GET endpoint for dataset run items. • Adds `GET` support for dataset-run-items, enabling programmatic retrieval of individual dataset run items via the API.

Langfuse v3.57.0

Mon, 12 May 2025 15:50:28 GMT

Langfuse v3.57.0 adds org-level API keys in settings and a new metrics API endpoint. • Adds a new metrics API endpoint for querying Langfuse metrics programmatically. • Adds organization API keys management directly in the organization settings UI.

Langfuse v3.55.0

Thu, 08 May 2025 10:58:34 GMT

Langfuse v3.55.0 adds saveable/shareable table views, run-level scores, dashboard totalTokens/totalCost metrics, and metadata filtering. • Adds `totalTokens` and `totalCost` metrics to the dashboard builder for token and cost tracking across traces. • Adds metadata filtering support in the dashboard builder to slice charts by arbitrary metadata fields. • Supports saving and sharing table views so practitioners can persist and distribute custom column/filter configurations. • Adds run-level scores support, enabling scores to be attached at the experiment-run level rather than only at the trace/observation level. • Adds OpenTelemetry attribute parsing for Google ADK, extending OTEL ingestion coverage to Google Agent Development Kit spans. • Adds a session link on the session scores table for faster navigation from a score to its originating session.

Langfuse v3.54.0

Thu, 01 May 2025 15:24:58 GMT

Langfuse v3.54.0 adds dataset search by name and a copy ID button on trace/observation previews. • Adds a 'Copy ID' button to trace and observation preview panels for quick ID retrieval. • Adds search-by-name filtering on the datasets table.

Langfuse v3.53.0

Mon, 28 Apr 2025 10:21:47 GMT

Langfuse v3.53.0 adds session-level scores, categorical score filters across tables, and score name filters on dashboards. • Adds categorical score filters across all tables, enabling filtering by categorical score values in the UI. • Adds score name filters on the dashboard, allowing dashboard views to be scoped by specific score names. • Supports session-level scores, extending scoring beyond traces and observations to the session entity. • Adds `input_text` and `output_text` support in markdown rendering for observations in the UI. • Increases the trace API observations payload limit to 10 MB, unlocking ingestion of larger observation payloads. • Adds a dead-letter-exchange (DLX) retry queue and service for improved event processing resilience. • Shows model name in the observations table column for quicker identification of model usage.

Langfuse v3.52.0

Tue, 22 Apr 2025 08:01:29 GMT

Langfuse v3.52.0 adds dashboard observation-name filtering, metadata on org/project CRUD APIs, and custom dashboards for self-hosters. • Adds optional `metadata` parameter to the organization and project CRUD API endpoints. • Adds filtering by observation name in the dashboard. • Makes custom dashboards available for self-hosted Langfuse deployments.

Langfuse v3.51.0

Tue, 15 Apr 2025 13:59:25 GMT

Langfuse v3.51.0 adds admin APIs for organizations, projects, users, memberships, and API keys plus table UI improvements. • Adds admin API endpoints covering organizations, projects, users, memberships, and API keys — enabling programmatic management of Langfuse tenants. • Adds peek view on the observations table and re-styled column visibility selector for traces and observations.

Langfuse v3.50.0

Tue, 15 Apr 2025 08:44:05 GMT

Langfuse v3.50.0 adds variable row height in compare runs view and expands project/org name limit to 60 characters. • Expands project and organization name character limit to 60 characters. • Adds variable row height support in the compare runs view, improving readability of long outputs.

Langfuse v3.49.0

Thu, 10 Apr 2025 12:42:07 GMT

Langfuse v3.49.0 adds customizable dashboards (beta), a metadata field on scores, and environment-based evaluator filtering. • Adds a `metadata` field to scores, enabling structured annotations on score objects. • Extends evaluator job configuration filter options so evaluators can run based on environments. • Introduces a beta preview for customizable dashboards with a new widget creator page. • Adds detail navigation in the run-compare view for deeper drill-down into evaluation results. • Makes batch export page size configurable, defaulting to 500 records per page.

Langfuse v3.48.0

Thu, 03 Apr 2025 17:06:21 GMT

Langfuse v3.48.0 adds JSON/JSONL scheduled blob exports, LangChain tool parsing in playground, and BASE_PATH cookie scoping. • Adds `json` and `jsonl` format support for scheduled blob storage exports. • Playground now parses tools automatically from LangChain generations, enabling direct tool reuse without manual entry. • Playground now accepts uppercase characters in tool and schema names. • Improves UI/UX of the dataset runs and compare page.

Langfuse v3.47.0

Wed, 02 Apr 2025 12:02:08 GMT

Langfuse v3.47.0 adds protected prompt labels, Gemini 2.5 Pro support, and persistent playground model selection. • Adds protected labels for prompts, preventing accidental modification of designated prompt versions. • Adds `gemini-2.5-pro-exp-03-25` as a supported model in LLM connections. • Playground now persists the selected model across sessions, reducing repeated configuration.

Langfuse v3.46.0

Mon, 31 Mar 2025 10:12:09 GMT

Langfuse v3.46.0 adds tool call support in the playground, GCS bucket support, and evaluator deletion via UI. • Adds GCS bucket support for blob storage. • Adds tool call support in the playground. • Enables deletion of evaluators directly via the UI. • Allows adding custom values to the tags filter in evaluations.

Langfuse v3.45.0

Tue, 25 Mar 2025 14:53:13 GMT

Langfuse v3.45.0 adds blob storage integration and evaluation item count preview. • Adds blob storage integration for external storage backends. • Shows a preview of the number of historic items to be evaluated when configuring evaluators, helping users gauge evaluation scope before running.

Langfuse v3.44.0

Mon, 24 Mar 2025 08:37:40 GMT

Langfuse v3.44.0 adds Atla LLM adapter, peek view on traces table, Pydantic/OTel I/O parsing, and top-level metadata extraction. • Adds Atla adapter under LLM connections, expanding the set of supported model providers for LLM-based evaluations. • Extracts top-level metadata from `langfuse.metadata` in OTel-ingested traces, enabling structured metadata fields to surface automatically. • Adds additional input/output parsing for Pydantic models via OTel, improving trace fidelity for Python applications using Pydantic schemas. • New peek view on the traces table lets users inspect trace details inline without leaving the table. • Caches LLM models in Redis to reduce database load and improve response times for model lookups. • Shows a status page menu item in the UI during active incidents (cloud).

Langfuse v3.43.0

Tue, 18 Mar 2025 14:16:09 GMT

Langfuse v3.43.0 adds environment tags on trace/observation detail views and external S3 endpoint support for batch exports. • Supports external S3 endpoints for batch exports, enabling self-hosted or third-party S3-compatible storage as an export destination. • Adds environment tag display on trace and observation detail views for at-a-glance environment context.

Langfuse v3.42.1

Fri, 14 Mar 2025 16:05:57 GMT

Langfuse v3.42.1 adds OpenAI Responses API usage schema support for cost tracking. • Supports `OpenAIResponseUsageSchema` for cost tracking, enabling accurate token-cost attribution for the OpenAI Responses API.

Langfuse v3.42.0

Thu, 13 Mar 2025 18:24:44 GMT

Langfuse v3.42.0 adds an API for annotation queues and CSV/JSON export for the scores table. • New API endpoints for annotation queues, enabling programmatic management of annotation workflows. • Adds CSV and JSON export for the scores table in the UI.

Langfuse v3.41.1

Thu, 13 Mar 2025 10:07:23 GMT

Langfuse v3.41.1 adds extra HTTP header support for Azure LLM connections. • Adds `extraHeaders` support to Azure LLM connections, enabling custom HTTP headers to be passed when connecting to Azure-hosted models.

Langfuse v3.41.0

Wed, 12 Mar 2025 17:29:21 GMT

Langfuse v3.41.0 adds prompt composability and extracts `logfire.msg` as span and trace names. • Extracts `logfire.msg` as the span and trace name when ingesting Logfire telemetry. • Adds prompt composability, enabling prompts to be built from reusable component prompts. Breaking changes: • Batch exports rename the table column/entity from 'generation' to 'observation' following generalization of the exports table — any downstream automation referencing 'generation' in batch export output may need updating.

Langfuse v3.40.0

Tue, 11 Mar 2025 12:50:12 GMT

Langfuse v3.40.0 adds score deletion in the UI and displays run names on the dataset run items table. • Adds score deletion capability directly in the UI. • Shows dataset run name on the run items table for easier identification.

Langfuse v3.39.0

Mon, 10 Mar 2025 16:09:52 GMT

Langfuse v3.39.0 adds trace delete API endpoints and API key actions to the audit log. • Adds trace delete API endpoints, enabling programmatic deletion of traces. • Adds API key actions to the audit log table, giving operators visibility into key-related events.

Langfuse v3.38.0

Fri, 07 Mar 2025 15:49:17 GMT

Langfuse v3.38.0 raises batch-export row limit to 1.5M, adds environment filtering, and new SSO claim env vars. • Adds `CUSTOM_EMAIL_CLAIM`, `CUSTOM_NAME_CLAIM`, and `CUSTOM_SUB_CLAIM` environment variables for customizing SSO/OIDC JWT claim mappings. • Raises the batch-export row limit to 1.5 million rows, unlocking larger data extractions. • Adds an environment filter to data views, enabling scoped lookups by deployment environment. • Adds an environment column to UI tables for at-a-glance environment visibility. • Adds multi-delete support for the dataset runs table, allowing bulk removal of runs.

Langfuse v3.37.0

Wed, 05 Mar 2025 22:52:01 GMT

Langfuse v3.37.0 adds S3 concurrency controls and WorkOS org/connection env vars for self-hosted deployments. • Adds `S3_CONCURRENT_READS` and `S3_CONCURRENT_WRITES` environment variables to tune S3 parallelism for self-hosted instances. • Adds `AUTH_WORKOS_ORGANIZATION_ID` and `AUTH_WORKOS_CONNECTION_ID` environment variables to configure WorkOS SSO at the organization and connection level.

Langfuse v3.36.0

Wed, 05 Mar 2025 12:32:53 GMT

Langfuse v3.36.0 adds WorkOS as a supported identity provider for authentication. • Adds WorkOS as a supported identity provider (IdP) for enterprise authentication.

Langfuse v3.35.0

Tue, 04 Mar 2025 21:25:55 GMT

Langfuse v3.35.0 adds dataset item deletion via UI and API, multi-dataset support, Pydantic Logfire ingestion, and a redesigned trace view. • Adds deletion of dataset items via the public API and UI. • Adds deletion of dataset runs via the API. • Adds environment properties on API routes. • Supports adding dataset items to multiple datasets at once. • Supports copying items between datasets. • Adds archive/unarchive functionality for dataset items on the single item view. • Adds a dedicated LLM connections settings page, separate from API keys. • Maps Pydantic Logfire events to the Langfuse data model, enabling Logfire ingestion. • Redesigns the single trace UI. • Adds settings deep links to the cmd+k command palette.

Langfuse v3.34.1

Fri, 28 Feb 2025 10:13:29 GMT

Adds `HOSTNAME` environment variable support for the Langfuse worker container. • Adds `HOSTNAME` environment variable support for the worker container, allowing explicit hostname binding (e.g., set to `0.0.0.0` to preserve health-check behaviour in environments that auto-assign hostnames). Breaking changes: • In some host environments the `HOSTNAME` variable may be overwritten automatically, which can impact health checks. Explicitly set `HOSTNAME=0.0.0.0` to restore the original behaviour.

Langfuse v3.34.0

Thu, 27 Feb 2025 21:54:41 GMT

Langfuse v3.34.0 adds GPT-4.5-preview model support and maps OTEL environment config to Langfuse environments. • Maps OpenTelemetry environment configuration to Langfuse environment, enabling OTEL-instrumented services to automatically populate the Langfuse environment field. • Adds `openai gpt-4.5-preview` as a supported model for cost tracking and token usage.

Langfuse v3.33.0

Thu, 27 Feb 2025 10:58:50 GMT

Langfuse v3.33.0 maps environment context to scores within the eval service. • Eval service now maps environment to score, enabling environment-aware evaluation results.

Langfuse v3.32.0

Wed, 26 Feb 2025 13:37:02 GMT

Langfuse v3.32.0 adds onboarding screens for core features in the UI. • Adds onboarding screens for core features to guide new users through the Langfuse UI.

Langfuse v3.31.0

Wed, 26 Feb 2025 12:54:27 GMT

Langfuse v3.31.0 adds environment property to traces, scores, and observations via API and ingestion pipeline. • Adds `environment` property to traces, scores, and observations in the API, enabling environment-level filtering and segmentation of LLM telemetry. • Processes `environment` as a first-class field in the ingestion pipeline, so environment metadata is captured and propagated at ingest time.

Langfuse v3.30.0

Wed, 26 Feb 2025 09:31:24 GMT

Langfuse v3.30.0 adds Google AI Studio support in playground and evals, plus claude-3-7-sonnet-20250219 model coverage. • Adds Google AI Studio as a supported provider in the playground and evals features. • Adds `claude-3-7-sonnet-20250219` as a supported model for cost tracking and usage.

Langfuse v3.29.1

Mon, 24 Feb 2025 19:54:09 GMT

Langfuse v3.29.1 adds a redesigned prompt detail screen and system/developer message support for o3. • Adds support for system/developer messages for o3 in LLM completion flows. • Introduces a new prompt detail screen with an updated input/output and message view design.

Langfuse v3.29.0

Fri, 21 Feb 2025 12:44:23 GMT

Langfuse v3.29.0 adds MLflow OTel span parsing, expanded OTel attribute mapping, and eval support for dataset and trace history. • Parses MLflow attributes on OpenTelemetry spans, enabling MLflow-instrumented workloads to surface in Langfuse without re-instrumentation. • Maps the Langfuse data model to additional OpenTelemetry attributes, broadening OTel interoperability. • Applies evaluations against the history of datasets and traces, enabling retrospective eval runs over existing data.

Langfuse v3.28.0

Fri, 14 Feb 2025 18:21:11 GMT

Langfuse v3.28.0 adds a graph view to the trace UI and TLS support for Redis connections. • Adds TLS support for Redis connections in self-hosted deployments. • Adds a graph view to the trace UI for visualizing LLM trace spans.

Langfuse v3.27.0

Thu, 13 Feb 2025 14:25:25 GMT

Langfuse v3.27.0 adds JSON content-type OTEL span ingestion, traceloop field mapping, and raises export row limit to 1M. • OTEL ingestion endpoint now accepts `application/json` content-type spans in addition to the existing binary protobuf format. • Maps `traceloop.entity.input` and `traceloop.entity.output` OTEL attributes to Langfuse's native `input`/`output` fields automatically. • Raises the maximum row limit for exports to 1M rows, unlocking large-scale dataset exports.

Langfuse v3.26.0

Mon, 10 Feb 2025 21:45:04 GMT

Langfuse v3.26.0 enriches OpenTelemetry LLM span mapping and adds select-all to data tables. • Adds select-all interface to tables in the UI, enabling bulk operations across all rows at once. • Populates `input`/`output` and `name` fields on traces ingested via OpenTelemetry, improving observability of OTEL-sourced data. • Maps additional properties for OpenTelemetry LLM spans, broadening the semantic coverage of OTEL ingestion.

Langfuse v3.25.0

Thu, 06 Feb 2025 13:31:40 GMT

Langfuse v3.25.0 adds Gemini 2.0 Flash, Flash-Lite, and Pro to playground and evals, plus custom GID/UID support. • Adds playground and eval support for Gemini 2.0 Flash, Gemini 2.0 Flash-Lite, and Gemini 2.0 Pro models. • Adds custom GID and UID support for self-hosted deployments.

Langfuse v3.24.0

Mon, 03 Feb 2025 19:56:29 GMT

Langfuse v3.24.0 adds local ISO date display with UTC on hover and millisecond precision on traces. • Displays local ISO dates with UTC time on hover and millisecond precision in the traces UI.

Langfuse v3.23.0

Fri, 31 Jan 2025 21:09:45 GMT

Langfuse v3.23.0 adds built-in model definitions for OpenAI o3-mini and o3-mini-2025-01-31. • Adds built-in model definitions for `o3-mini` and `o3-mini-2025-01-31`, enabling automatic cost and usage tracking for these OpenAI models.

Langfuse v3.22.0

Fri, 31 Jan 2025 19:01:17 GMT

Langfuse v3.22.0 adds a native OpenTelemetry traces ingestion endpoint and a quick-access cmd+k command menu. • Adds `otel/v1/traces` endpoint to accept OpenTelemetry spans directly, enabling native OTEL trace ingestion without a separate collector. • Adds cmd+k keyboard shortcut to open the command menu from the main UI navigation.

Langfuse v3.21.0

Thu, 30 Jan 2025 22:32:07 GMT

Langfuse v3.21.0 adds CodeMirror-powered prompt variable highlighting and linting in the UI. • Adds CodeMirror editor for text area input in the prompt UI, with syntax highlighting and linting of prompt variables. • Adds a customizable CodeMirror theme for the editor UI.

Langfuse v3.20.0

Thu, 30 Jan 2025 18:51:55 GMT

Langfuse v3.20.0 adds cmd+k project/org switching and independent prompt version scrolling in the UI. • Enables switching between projects and organizations directly from the cmd+k menu. • Allows scrolling through prompt versions independently from the prompt itself in the Prompts UI. • Automatically scrolls the selected prompt version into view in the Prompts UI.

Langfuse v3.19.0

Thu, 30 Jan 2025 10:47:50 GMT

Langfuse v3.19.0 adds commit messages for prompts, a cmd+k command menu, and `LANGFUSE_INIT_PROJECT_RETENTION` env var for initializing data retention. • Adds `LANGFUSE_INIT_PROJECT_RETENTION` environment variable to set data retention on project initialization (self-host enterprise). • Adds `commit_message` field support to prompts, letting teams annotate prompt versions with a description of what changed. • New `cmd+k` command menu in the UI for quick keyboard-driven navigation. • Allows removing the system message directly in the messages UI. • Data retention feature exits beta and is now available to self-hosted enterprise plans. • Adds more x-axis ticks to charts for finer time-series granularity. • Supports uploading CSV files with a single column in dataset imports.

Langfuse v3.17.1

Mon, 27 Jan 2025 14:32:38 GMT

Langfuse v3.17.1 adds automatic removal of ClickHouse data beyond the configured retention limit. • Automatically removes data beyond the retention limit from ClickHouse, enforcing data lifecycle policies at the storage layer.

Langfuse v3.17.0

Mon, 27 Jan 2025 12:39:46 GMT

Langfuse v3.17.0 adds configurable auth checks and SSO provider methods. • Adds configurable authentication checks and auth method selection across SSO providers.

Langfuse v2.95.0

Mon, 27 Jan 2025 12:16:33 GMT

Langfuse v2.95.0 makes SSO auth checks and auth methods configurable per provider. • Adds configurable checks and auth method settings across SSO providers for more flexible identity provider integration.

Langfuse v2.94.0

Fri, 24 Jan 2025 15:35:49 GMT

Langfuse v2.94.0 adds proxy support for OAuth flows. • Adds proxy support for OAuth authentication flows, enabling deployments behind HTTP proxies to use OAuth-based integrations.

Langfuse v3.16.0

Fri, 24 Jan 2025 15:13:07 GMT

Langfuse v3.16.0 adds proxy support for OAuth authentication flows. • Adds proxy support for OAuth flows, enabling deployments behind an HTTP proxy to authenticate via OAuth.

Langfuse v3.15.0

Fri, 24 Jan 2025 14:04:03 GMT

Langfuse v3.15.0 adds AUTH_CUSTOM_ID_TOKEN env var, media retention deletion, time-to-first-token in trace timeline, and prompt version updates. • Adds `AUTH_CUSTOM_ID_TOKEN` environment variable to support custom ID token configuration for authentication. • Adds media asset deletion driven by retention settings, enabling automatic cleanup of stored media. • Adds time-to-first-token metric to the trace timeline view for LLM latency visibility. • Displays count of all log kinds (observations) directly on the trace table. • Adds the ability to update prompt versions in the prompt management UI.

Langfuse v2.93.9

Fri, 24 Jan 2025 13:13:40 GMT

Langfuse v2.93.9 adds DATABASE_ARGS config support and a new AUTH_CUSTOM_ID_TOKEN environment variable. • Adds `DATABASE_ARGS` environment variable to pass extra arguments to the database connection configuration. • Adds `AUTH_CUSTOM_ID_TOKEN` environment variable to supply a custom ID token for authentication flows.

Langfuse v3.14.0

Thu, 23 Jan 2025 15:25:05 GMT

Langfuse v3.14.0 adds prompt diff view, prompt duplication, extra LLM API headers, and data retention config in project settings. • Adds data retention configuration in project settings, letting teams control how long trace and observation data is stored. • Supports extra headers on LLM API key configurations, enabling custom auth or routing headers for LLM provider calls. • Adds a diff view when creating a new prompt version, making it easy to review changes between prompt iterations. • Supports prompt duplication directly in the UI, streamlining the creation of prompt variants. • Enables cloud users to switch between available subscription plans directly from the product.

Langfuse v3.13.0

Tue, 21 Jan 2025 16:11:36 GMT

Langfuse v3.13.0 adds an audit log view in project settings. • Adds an audit log view to project settings, giving teams visibility into project-level activity. • Adds product analytics events for dataset runs.

Langfuse v3.12.0

Tue, 21 Jan 2025 11:30:35 GMT

Langfuse v3.12.0 adds `DATABASE_ARGS` environment variable support for custom database connection parameters. • Adds `DATABASE_ARGS` environment variable to pass additional configuration arguments to the database connection.

Langfuse v3.11.0

Mon, 20 Jan 2025 14:50:06 GMT

Langfuse v3.11.0 merges the generations view into a unified observations table. • Converts the generations view into the observations table, unifying LLM call data under a single UI surface.

Langfuse v3.10.0

Sat, 18 Jan 2025 18:56:07 GMT

Langfuse v3.10.0 adds CSV dataset import, gemini-2.0-flash-exp support, and a single-user analytics view. • Adds CSV import for uploading datasets directly via the UI. • Adds playground and eval support for `gemini-2.0-flash-exp`. • New single-user view with simplified metrics and a link to the dashboard.

Langfuse v3.9.0

Fri, 17 Jan 2025 11:27:27 GMT

Langfuse v3.9.0 adds trace observation-level filtering, hidden observation hints, and o1 model cost tracking. • Adds `minObservationlvl` filter in the trace detail UI to narrow down observations by minimum level. • Adds a hint in the trace tree UI when observations are hidden, improving visibility into filtered trace data. • Adds cost tracking support for OpenAI o1 models in the model cost configuration. Breaking changes: • Removes legacy v3-migration environment variables — any existing setup referencing those variables will break on upgrade.

Langfuse v3.8.0

Wed, 15 Jan 2025 09:27:06 GMT

Langfuse v3.8.0 adds streaming to observation and trace list endpoints and persists dashboard score graph selections. • Uses streaming for observation and trace list endpoints, enabling faster and more scalable data retrieval for large result sets. • Saves selected score graphs on the dashboard to `localStorage` on a per-project basis, so dashboard configurations persist across sessions. • Shows count of group selection on column visibility controls in UI tables.

Langfuse v3.7.0

Sun, 12 Jan 2025 09:01:58 GMT

Langfuse v3.7.0 adds an 'Add to Dataset' button in annotation queues and a script to replay missing events. • Adds an 'Add to Dataset' button directly on the trace preview inside annotation queues, streamlining dataset curation during review. • Adds a script to replay missing events, enabling recovery of lost ingestion data.

Langfuse v3.6.1

Fri, 10 Jan 2025 08:16:56 GMT

Langfuse v3.6.1 adds Redis-to-Postgres queue backup, 24-hour eval retry on rate limits, and a last-used sort for the models table. • Backs up Redis queues to Postgres to improve durability of queued work. • Retries eval executions that receive 429 rate-limit errors for up to 24 hours, preventing dropped evaluations during LLM provider throttling. • Adds a `lastUsed` column to the models table with full lookback, sortable by last-used date.

Langfuse v3.6.0

Tue, 07 Jan 2025 13:45:37 GMT

Langfuse v3.6.0 adds `CLICKHOUSE_DB` environment variable support for self-hosted ClickHouse configuration. • Adds `CLICKHOUSE_DB` environment variable to configure the ClickHouse database name in self-hosted deployments.

Langfuse v3.5.0

Mon, 23 Dec 2024 16:41:23 GMT

Langfuse v3.5.0 adds an export status table in project settings and inline LLM connection creation from the model selection dropdown. • Adds an export status table to project settings, giving practitioners visibility into the state of their data exports. • Enables creation of a new LLM connection directly from the LLM selection dropdown, removing the need to navigate away to configure a connection. • Switches in-product feedback links to GitHub Discussions and Issues.

Langfuse v3.4.0

Fri, 20 Dec 2024 21:43:12 GMT

Langfuse v3.4.0 adds PKCE auth support, dataset score/metrics charts, full usage-type model UI, and a JSON editor toggle for text prompts. • Adds `AUTH_CUSTOM_CLIENT_AUTH_METHOD` environment variable to enable PKCE code flow for custom OAuth/OIDC authentication clients. • Adds charts for scores and resource metrics on dataset run views. • Adds UI to configure all usage types when defining models. • Adds a JSON editor toggle for text prompts in the prompt UI.

Langfuse v3.3.0

Thu, 19 Dec 2024 21:05:06 GMT

Langfuse v3.3.0 adds `AUTH_IGNORE_ACCOUNT_FIELDS` for IDP field sanitization and per-project ingestion traffic routing. • Adds `AUTH_IGNORE_ACCOUNT_FIELDS` environment variable to sanitize identity-provider fields before account creation, preventing unwanted IDP data from being written to user accounts. • Enables redirect of ingestion traffic for specific projects to a secondary queue, supporting traffic isolation and prioritization at the project level. • Adds an organizations menu item link across all global UI pages for faster cross-organization navigation.

Langfuse v2.93.7

Wed, 18 Dec 2024 23:59:05 GMT

Langfuse v2.93.7 adds AUTH_IGNORE_ACCOUNT_FIELDS to strip unwanted IDP fields before account creation. • Adds `AUTH_IGNORE_ACCOUNT_FIELDS` environment variable to sanitize specified identity-provider fields before a new account is created, preventing unwanted IDP attributes from being stored.

Langfuse v3.2.0

Mon, 16 Dec 2024 17:04:54 GMT

Langfuse v3.2.0 adds PostHog integration, flexible cost/usage key tracking, and a revamped experiment modal. • Adds PostHog integration processing, enabling LLM observability data to flow into PostHog pipelines. • Allows additional cost and usage keys in cost tracking, so custom or non-standard model billing fields can be recorded. • New experiment modal in the UI highlights both prompt and custom experiments for easier navigation.

Langfuse v3.1.0

Thu, 12 Dec 2024 12:35:48 GMT

Langfuse v3.1.0 adds editable API key notes, an observations status chart, and optimistic annotation updates. • Adds editable notes to each API key in the UI, enabling teams to document the purpose or owner of individual keys. • Adds an observations status chart to the dashboard for visualizing the distribution of observation states. • Introduces optimistic UI updates on the annotation form for faster, more responsive annotation workflows.

Langfuse v3.0.0

Mon, 09 Dec 2024 10:32:29 GMT

Langfuse v3 adds async worker container, Clickhouse, S3/Blob storage, and Redis for high-throughput self-hosted deployments, plus KeyCloak and GitHub Enterprise auth. • Adds `LANGFUSE_POSTGRES_INGESTION_ENABLED` environment variable to control whether traces and scores are read from Postgres in v3 self-hosted deployments. • Introduces a new worker container for asynchronous event processing, enabling self-hosted Langfuse to handle hundreds of events per second. • Adds Clickhouse as the storage backend for traces, observations, and scores; exports and API routes (`/api/public/traces`, `/metrics/daily`) now served from Clickhouse. • Adds S3/Blob store support for large object storage in self-hosted deployments, with signed AWS S3 image URLs rendered in trace/observation preview. • Adds Redis/Valkey for event queuing and data caching in self-hosted setups; ingestion API rate limits doubled. • Adds KeyCloak as an authentication provider for self-hosted instances. • Adds GitHub Enterprise as an authentication provider. • Adds Gemini and Vertex AI support in the playground and evaluations. • Increases comment content character limit to 3,000 characters. • Adds inline comment button on each trace preview in session view. • Adds a UI for monitoring background migration status. • Adds a self-hosted Pro plan entitlement tier. • Broadens media content type support for trace/observation ingestion. • Adds an explicit confirmation prompt before deleting a dataset in the UI. • Adds a 'not found' error page for unknown traces and sessions in the UI. Breaking changes: • Self-hosting v3 requires deploying a second worker container and provisioning Clickhouse, S3/Blob store, and Redis/Valkey — existing Postgres-only deployments must follow the v3 migration guide before upgrading. • Batch export S3 environment variable names have been moved into a new naming pattern; existing `docker-compose.yml` or environment configs using the old names must be updated. • The `LANGFUSE_CSP_DISABLE` environment variable has been removed (it did not work); any configs referencing it must be cleaned up. • The public users API has been removed; any integrations calling that endpoint will break.

Langfuse v2.93.3

Tue, 03 Dec 2024 22:38:40 GMT

Langfuse v2.93.3 adds KeyCloak and GitHub Enterprise as authentication providers. • Adds KeyCloak as a supported authentication provider. • Adds GitHub Enterprise as a supported authentication provider.

Langfuse v2.93.1

Tue, 03 Dec 2024 00:26:26 GMT

Langfuse v2.93.1 adds an environment variable to optionally disable CSP headers. • Adds `LANGFUSE_CSP_DISABLE=true` environment variable to optionally disable Content Security Policy headers.

Langfuse v2.93.0

Tue, 26 Nov 2024 09:08:41 GMT

Langfuse v2.93.0 adds UI-triggered experiments, Azure blob storage, and expanded ClickHouse-backed API endpoints. • Adds Azure storage provider support for blob/media storage via the `LANGFUSE_S3_*` / storage provider configuration. • Serves observations and scores list endpoints directly from ClickHouse, enabling those APIs to scale to larger deployments. • Exposes all BullMQ queues through the internal BullMQ GET API endpoint. • Adds all scores to dataset run items in the UI, giving evaluators full score visibility per run. • Enables triggering experiments directly from the UI without requiring SDK or API calls. • Adds update support to evaluators, allowing existing evaluator configurations to be modified.

Langfuse v2.92.0

Thu, 21 Nov 2024 17:46:57 GMT

Langfuse v2.92.0 adds server-side LLM invocation tracing, single-trace API via ClickHouse, and an SDK API for observations by ID. • Adds SDK API endpoint to fetch observations by ID. • Adds API endpoint to fetch a single trace via ClickHouse. • Adds a service endpoint for failed BullMQ events. • Adds server-side tracing of LLM invocations at the core level.

Langfuse v2.91.0

Tue, 19 Nov 2024 14:46:23 GMT

Langfuse v2.91.0 adds evals on dataset runs, media UI support, ClickHouse-backed datasets/sessions/scores, and a dataset run peek view. • Adds a `configure to read from ClickHouse only` mode, serving traces, dataset features, dataset results, and scores entirely from ClickHouse — unlocking higher-scale query paths for traces, sessions, and public API score/session lookups. • Enables LLM evaluations triggered directly via dataset runs (evals-on-datasets feature flag removed, now generally available). • Adds UI support for media in traces and observations. • Adds a peek view on the dataset run compare table, with a header, so users can inspect individual run items inline without leaving the comparison view. • Shows linked evaluators directly on the dataset page so teams can see which eval configs are associated with a dataset at a glance. • Improves prompt metrics performance by migrating the underlying query path.

Langfuse v2.90.0

Fri, 15 Nov 2024 10:27:37 GMT

Langfuse v2.90.0 adds multimodal media upload/download endpoints and generation metrics for the prompts table. • Adds media upload and download endpoints for multimodal support. • Adds generation count and metrics (e.g. cost, latency) to the prompts table. • Adds a query parameter to the healthcheck endpoint that enables failure responses when the database is unavailable. • Moves hobby plan usage information to the sidebar in the cloud UI.

Langfuse v2.89.0

Tue, 12 Nov 2024 18:38:00 GMT

Langfuse v2.89.0 expands ClickHouse-backed queries to sessions, scores, and latency dashboards, and adds trace deletion from the UI. • Enables deleting traces directly from the UI when using ClickHouse as the backend. • Adds table search support for ClickHouse-backed trace and generation tables. • Adds user charts showing per-user consumption metrics powered by ClickHouse queries. • Adds scores-over-time chart to the dashboard, queried from ClickHouse. • Brings the Sessions API onto ClickHouse reads, covering session listing and detail queries. • Adds a notification card in the sidebar for in-product announcements. • Adds an experimentation setup for steering reads between ClickHouse and Postgres for traces, generations, sessions, and scores table APIs. • Reads latency tables and model-latency dashboard data from ClickHouse, unlocking faster latency analytics at scale.

Langfuse v2.88.0

Thu, 07 Nov 2024 10:47:07 GMT

Langfuse v2.88.0 adds dataset run comparison view, metadata filters across all UI tables, and Claude Haiku 3.5 model support. • Adds metadata filter across all UI tables, enabling filtering by metadata fields in every table view. • Adds a dataset run comparison view to compare results across different dataset runs side by side. • Adds support for Claude Haiku 3.5 in model tracking and cost calculation. • Expands dashboard coverage with additional charts powered by ClickHouse, including distinct model queries and a scores table.

Langfuse v2.87.0

Sun, 03 Nov 2024 17:37:36 GMT

Langfuse v2.87.0 adds a new sidebar/nav, flexible cost tracking, ClickHouse-backed traces and generations, eval template creation from config forms, and cloud event usage metering. • Adds `is_deleted` field to ClickHouse traces and observations, enabling soft-delete tracking in the analytics backend. • Extends ClickHouse support to the traces filter options endpoint, `traces.countAll` API, traces detail view, and generations table — broadening the set of queries that run against ClickHouse instead of Postgres. • Makes cost tracking flexible, allowing custom or overridden pricing models beyond built-in defaults. • Adds a new sidebar and main navigation UI, replacing the previous navigation structure. • Adds an option to update referenced eval configs when creating a new eval template version. • Enables creating an eval template directly from the eval config form in the UI. • Adds event usage metering for cloud deployments. • Adds additional filter support to the traces table.

Langfuse v2.86.0

Tue, 22 Oct 2024 18:52:04 GMT

Langfuse v2.86.0 adds a Comments API, `queueId` and `traceTags` filters on GET /scores, markdown rendering, and playground message reordering. • Adds `POST /comments`, `GET /comments`, and `GET /comments/${commentId}` API endpoints for programmatic comment management on traces and observations. • Adds `queueId` query parameter to `GET /scores` to filter scores by annotation queue. • Adds `traceTags` query parameter to `GET /scores` to filter scores by tags on the parent trace. • Adds comment support in the annotation queue view, allowing reviewers to leave notes directly while scoring items. • Renders plain string outputs as Markdown by default on single trace/observation pages. • Adds 'Select All' / 'Deselect All' buttons to column visibility pickers across all tables. • Supports drag-and-drop reordering of messages in the prompt playground. • Adds ingestion delay configuration to control when ingested events are processed.

Langfuse v2.85.0

Fri, 11 Oct 2024 20:55:12 GMT

Langfuse v2.85.0 adds AWS Bedrock support in the playground and evals, plus a color-coding toggle for trace tree metrics. • Adds AWS Bedrock support in the Playground and LLM-as-a-judge evaluations. • Adds a toggle in the UI to enable or disable color coding of metrics on the trace tree. • Enables annotation queues for cloud hobby-tier plans.

Langfuse v2.84.0

Thu, 10 Oct 2024 03:58:45 GMT

Langfuse v2.84.0 adds annotation queues (beta) and API key invalidation via cloud admin API. • Adds API key invalidation via the cloud admin API. • Introduces annotation queues as a feature-flagged beta, with support for updating queue names.

Langfuse v2.83.0

Tue, 08 Oct 2024 00:47:44 GMT

Langfuse v2.83.0 adds GitLab as an authentication provider. • Adds GitLab as an OAuth authentication provider for self-hosted deployments.

Langfuse v2.82.0

Fri, 04 Oct 2024 05:36:18 GMT

Langfuse v2.82.0 adds tokens-per-second to the generations table and improves cost/latency rendering in the trace view. • Adds tokens-per-second display to the generations table, giving practitioners a quick throughput signal alongside existing latency and cost columns. • Improves cost and latency rendering on the trace tree and trace preview for clearer at-a-glance performance inspection. • Supports initializing environment variables via Docker Compose to streamline self-hosted deployments.

Langfuse v2.81.2

Mon, 30 Sep 2024 23:23:59 GMT

Langfuse v2.81.2 adds customizable model adapter base URLs and tightens password reset link expiry to 10 minutes. • Adds customizable default model adapter base URLs for enterprise deployments, enabling self-hosted or proxy LLM endpoint configuration.

Langfuse v2.81.1

Fri, 27 Sep 2024 15:07:32 GMT

Langfuse v2.81.1 adds optional S3 upload of all incoming events and larger step sizes in the Trace Timeline View. • Adds optional upload of all incoming events to S3 (feat(v3)) for infrastructure-level event archival. • Supports larger step sizes in the Trace Timeline View for improved navigation of long traces.

Langfuse v2.81.0

Mon, 23 Sep 2024 12:01:03 GMT

Langfuse v2.81.0 adds API-based API key deletion and async generation exports on cloud. • Adds a DELETE endpoint to remove API keys programmatically via the Langfuse API. • Adds async export of generations on the cloud UI, enabling large dataset exports without blocking the browser.

Langfuse v2.79.0

Fri, 13 Sep 2024 18:44:22 GMT

Langfuse v2.79.0 adds custom base path support, trace export, OpenAI o1 models, and drag-and-drop column reordering. • Supports custom base path for self-hosted deployments via the `NEXT_PUBLIC_BASE_PATH` environment variable. • Adds env variables to toggle individual queue consumers on or off (self-host operators can now control which consumers run). • Adds cost tracking and Playground support for OpenAI o1 beta models. • Enables export of traces directly from the UI. • Adds search to the users table. • Adds drag-and-drop column reordering across data tables. • Adds type-to-search column name filtering in the filter builder.

Langfuse v2.78.0

Wed, 04 Sep 2024 15:31:34 GMT

Langfuse v2.78.0 adds structured logging, a `/ready` readiness endpoint, and renames provisioning env vars to `LANGFUSE_INIT_`. • Adds `/ready` HTTP endpoint to separate liveness checks from readiness checks in self-hosted deployments. • Adds structured logging option for self-hosted instances, migrated across the shared package and web API. • Renames headless initialization environment variable prefix from `LANGFUSE_PROVISION_` to `LANGFUSE_INIT_` for self-hosted instance provisioning. Breaking changes: • The `LANGFUSE_PROVISION_` environment variable prefix is renamed to `LANGFUSE_INIT_`; self-hosted instances using headless initialization must update all provisioning env vars to the new prefix or they will break on upgrade.

Langfuse v2.77.0

Wed, 04 Sep 2024 08:50:48 GMT

Langfuse v2.77.0 adds dataset run deletion and automated self-hosted instance provisioning via `LANGFUSE_PROVISION_*` env vars. • Adds `LANGFUSE_PROVISION_*` environment variables to automatically provision a self-hosted Langfuse instance with a default organization, project, user, and API keys on first startup. • Adds the ability to delete dataset runs from the UI.

Langfuse v2.76.0

Tue, 03 Sep 2024 08:50:11 GMT

Langfuse v2.76.0 adds synchronous ingestion fallback and resizable dataset item UI. • Falls back to synchronous ingestion automatically when the ingestion queue is unavailable, improving reliability during queue outages. • Adds the ability to disable the legacy ingestion queue when required. • Makes the table vs. item detail panel in dataset items resizable. • Pulls usage data in cloud settings from Stripe when available, improving accuracy of usage displays.

Langfuse v2.75.1

Fri, 30 Aug 2024 18:29:30 GMT

Langfuse v2.75.1 adds custom rate limits per organization for Langfuse Cloud. • Adds custom rate limits configurable per organization on Langfuse Cloud.

Langfuse v2.75.0

Thu, 29 Aug 2024 17:08:36 GMT

Langfuse v2.75.0 adds tag filters across all tables, persistent filter state in session storage, and broad frontend performance improvements. • Adds tag filter to the generations table and scores table, and adds trace tags as a column/filter in generations, sessions, and score tables. • Persists table and dashboard filter state — including date range — in session storage so filters survive page navigation. • Adds a jump-to-page input in table pagination for faster navigation across large result sets. • Significant frontend performance improvements across traces, sessions, generations, and scores tables by parallelizing database queries and splitting total-count queries to reduce initial load time. • Displays eval config sampling rate in the UI.

Langfuse v2.74.0

Thu, 22 Aug 2024 10:39:14 GMT

Langfuse v2.74.0 adds markdown rendering support for comments in the UI. • Adds markdown rendering support for comments in the UI.

Langfuse v2.73.0

Wed, 21 Aug 2024 21:52:45 GMT

Langfuse v2.73.0 adds multi-modal trace viewing with support for OpenAI content part format (images and text). • Adds multi-modal trace rendering in the UI, supporting the OpenAI content part format for displaying images and text within traces.

Langfuse v2.72.0

Wed, 21 Aug 2024 08:00:48 GMT

Langfuse v2.72.0 adds dataset duplication, object-level comments, and Stripe-powered cloud billing. • Adds a duplicate dataset button in the UI to quickly clone existing datasets. • Adds comments on objects (traces, observations, etc.) directly within the UI. • Adds Stripe checkout, customer portal, and usage metering to Langfuse Cloud billing settings. • Adds billing period and next invoiced amount display to Langfuse Cloud billing settings.

Langfuse v2.71.0

Fri, 16 Aug 2024 17:24:10 GMT

Langfuse v2.71.0 adds score analytics dashboards with aggregate and time series charts, plus audit logs for score configs. • Adds aggregate and time series charts per score to the dashboard, enabling score analytics visualization. • Adds audit logs for score config changes.

Langfuse v2.70.0

Tue, 13 Aug 2024 18:45:22 GMT

Langfuse v2.70.0 adds Organizations support, enterprise UI customization, and Redis-backed ingestion and export queues. • Adds enterprise UI customization (configurable docs, support, and feedback links) via self-host enterprise edition settings. • Adds Organizations support, enabling multi-organization management within a single Langfuse instance. • Moves batch export queue from web to Redis, improving reliability and scalability of data exports. • Ingestion pipeline now returns early and routes trace events through Redis, reducing latency for tracing workloads. Breaking changes: • The `LANFUSE_WEB_MIGRATION_DISABLED` environment variable has been removed.

Langfuse v2.69.0

Wed, 07 Aug 2024 15:55:00 GMT

Langfuse v2.69.0 adds per-score columns in data tables, removes beta from trace timeline, and adds gpt-4o-2024-08-06 pricing and eval support. • Adds `gpt-4o-2024-08-06` model pricing and makes it available in the playground and evals. • Breaks out scores into individual columns in data tables for easier comparison across traces and observations. • Removes the beta flag from the trace timeline view, marking it generally available.

Langfuse v2.68.0

Tue, 06 Aug 2024 20:35:24 GMT

Langfuse v2.68.0 adds `lastUpdatedAt`, `lastConfig`, and date-range filters to the GET /v2/prompts API endpoint. • Adds `lastUpdatedAt` field to `GET /v2/prompts` responses, exposing when each prompt was last modified. • Adds `lastConfig` attribute and `fromUpdatedAt` / `toUpdatedAt` query parameters to `GET /v2/prompts`, enabling date-range filtering of prompt listings. • Extends the maximum prompt label length from the previous limit to 36 characters in the UI.

Langfuse v2.67.0

Wed, 31 Jul 2024 16:22:09 GMT

Langfuse v2.67.0 adds resizable table columns, dashboard filters for user/version/release, and date range filtering for prompt metrics. • Adds Sentry sampling configuration for the worker via environment variable. • Extends dashboard filters to include user, version, and release dimensions. • Adds a date range filter to prompt metrics for scoped performance views. • Introduces resizable columns in table views across the UI. • Adds an info message in the column selector to guide column configuration.

Langfuse v2.66.0

Mon, 29 Jul 2024 20:33:31 GMT

Langfuse v2.66.0 adds version/release trace filters, promptName/promptVersion on observations, Redis API key and prompt caching, and configurable JWT session duration. • Adds `version` and `release` query filters to the `GET /traces` and `GET /observations` API routes, enabling precise retrieval of traces and observations by deployment version or release. • Adds `promptName` and `promptVersion` fields to observations returned by the API, exposing which prompt and version drove each LLM call. • Adds `AUTH_SESSION_MAX_AGE` environment variable to customize JWT session duration, with a 5-minute polling interval. • Adds server-side Redis caching for API keys and prompts, reducing database load on high-throughput deployments. • Adds a connection-check endpoint for ClickHouse to verify infrastructure health. • Adds a separate date range filter to UI tables for traces and generations.

Langfuse v2.65.0

Mon, 22 Jul 2024 17:16:31 GMT

Langfuse v2.65.0 adds image rendering in markdown, datetime filters, and gpt-4o mini support in playground and evals. • Adds `gpt-4o mini` as a supported model in the playground and evals. • Extends date filters to full datetime precision across the UI. • Renders inline images in markdown view when a markdown image URL is provided.

Langfuse v2.64.0

Thu, 18 Jul 2024 17:57:01 GMT

Langfuse v2.64.0 adds a new REQUESTS billing unit, gpt-4o-mini model support, and improved long-string display in the UI. • Adds `REQUESTS` as a new unit type for model cost tracking, enabling per-request pricing models. • Adds built-in support for the `gpt-4o-mini` model. • Long strings in the trace UI now collapse with an '... expand' control and preserve whitespace when expanded.

Langfuse v2.63.0

Tue, 16 Jul 2024 17:05:55 GMT

Langfuse v2.63.0 adds a UI toggle to enable or disable markdown rendering in pretty format view. • Adds a button in the UI to enable or disable markdown rendering when the pretty format is selected for trace/observation output.

Langfuse v2.62.0

Mon, 15 Jul 2024 13:55:19 GMT

Langfuse v2.62.0 adds markdown rendering on the Trace page and expands full string display in table rows. • Adds markdown rendering for content displayed on the Trace page in the UI.

Langfuse v2.61.0

Wed, 10 Jul 2024 14:14:23 GMT

Langfuse v2.61.0 adds a GET /sessions endpoint and expands time-based filters across existing GET APIs. • Adds `GET /sessions` API endpoint for retrieving session data programmatically. • Adds additional time-based filters to existing `GET` APIs for more precise querying. • Defaults the dashboard date range to 1 day for faster initial load performance.

Langfuse v2.60.0

Fri, 05 Jul 2024 13:38:50 GMT

Langfuse v2.60.0 adds non-numeric score support via API and new 5-minute/3-hour dashboard timeframes. • Adds support for non-numeric scores and score configs via the API, dropping the non-null constraint on the `value` field in the `scores` table — enabling categorical/qualitative scoring alongside numeric scores. • Adds 5-minute and 3-hour timeframe options to the dashboard for finer-grained monitoring windows.

Langfuse v2.59.1

Thu, 04 Jul 2024 12:55:41 GMT

Langfuse v2.59.1 adds AWS Bedrock Anthropic model name support and formatted token number display. • Adds AWS Bedrock model names for Anthropic models, enabling accurate token and cost tracking for Bedrock-hosted Anthropic usage. • Token counts in the UI are now formatted for readability (e.g., large numbers displayed with separators).

Langfuse v2.59.0

Wed, 03 Jul 2024 16:53:18 GMT

Langfuse v2.59.0 adds a `models` API route and expand/collapse controls for the trace timeline. • Adds `models` API routes, enabling programmatic management of model definitions. • Adds expand/collapse all buttons to the trace timeline UI for faster navigation of complex traces. • Fetches metadata individually on generations and traces tables, improving UI performance for large datasets.

Langfuse v2.58.0

Tue, 02 Jul 2024 08:33:57 GMT

Langfuse v2.58.0 adds ARM64 Docker builds, datasets v2 API, custom OAuth scopes, and manual Postgres migration control. • Adds `AUTH_CUSTOM_SCOPE` environment variable to override the OAuth scopes used in custom OAuth provider setups. • Adds `LANGFUSE_AUTO_POSTGRES_MIGRATION_DISABLED` environment variable to disable automatic Postgres migrations on startup, enabling manual migration control. • Introduces datasets v2 API with a new typed public API interface. • Publishes official Docker images for the `arm64` architecture. • Auto-selects the first operator in the filter builder UI, reducing clicks when constructing filters.

Langfuse v2.57.0

Wed, 26 Jun 2024 16:44:20 GMT

Langfuse v2.57.0 adds Claude Sonnet 3.5 to the playground and shifts token cost calculation to ingestion time. • Adds Claude Sonnet 3.5 as a supported model in the Langfuse playground. • Calculates and writes token costs at ingestion time rather than at query time, enabling faster and more consistent cost reporting. • Adds a start time filter to filter option queries on tables, improving performance for large datasets.

Langfuse v2.56.1

Tue, 25 Jun 2024 11:46:03 GMT

Langfuse v2.56.1 adds Anthropic Claude 3.5 Sonnet model support and Redis connection-string configuration. • Supports configuring Redis via a connection string (in addition to individual host/port parameters). • Adds built-in token/cost model support for Anthropic Claude 3.5 Sonnet.

Langfuse v2.56.0

Mon, 24 Jun 2024 13:15:30 GMT

Langfuse v2.56.0 adds sessions table export, score-config API endpoints, and configurable dashboard lookback windows. • Adds `GET /score-configs/{configId}` and `GET /score-configs` API endpoints to retrieve score configuration details programmatically. • Adds export capability to the sessions table in the UI. • Adds configurable default lookback period for dashboards and tables.

Langfuse v2.55.0

Fri, 14 Jun 2024 14:07:12 GMT

Langfuse v2.55.0 adds score config archiving and a self-serve password reset flow via email link. • Adds password reset flow for email/password users via email-link authentication when `SMTP_CONNECTION_URL` and `EMAIL_FROM_ADDRESS` environment variables are configured. • Enables archiving of score configs from the UI.

Langfuse v2.54.0

Wed, 12 Jun 2024 17:12:15 GMT

Langfuse v2.54.0 adds Google Workspace domain allowlist for authentication. • Adds Google Workspace domain allowlist to restrict sign-in to specific organizational domains.

Langfuse v2.53.0

Tue, 11 Jun 2024 22:14:02 GMT

Langfuse v2.53.0 adds a timeline view for traces and observations in the UI. • New timeline view for traces and observations, giving practitioners a visual chronological layout of LLM call spans.

Langfuse v2.52.1

Tue, 11 Jun 2024 18:31:17 GMT

Langfuse v2.52.1 adds enterprise license key verification. • Adds license key verification for enterprise (EE) deployments.

Langfuse v2.52.0

Tue, 11 Jun 2024 14:07:27 GMT

Langfuse v2.52.0 adds support for custom LLM endpoints. • Adds custom LLM endpoints, enabling users to configure non-default or self-hosted model providers.

Langfuse v2.51.0

Tue, 11 Jun 2024 08:28:06 GMT

Langfuse v2.51.0 adds support for custom OIDC identity provider configuration. • Adds custom OIDC identity provider (IDP) support for authentication, enabling organizations to integrate their own OIDC-compliant IdP with Langfuse.

Langfuse v2.50.0

Mon, 10 Jun 2024 17:55:15 GMT

Langfuse v2.50.0 adds score ID filtering to the list scores endpoint. • Adds filter-by-score-IDs support to the list scores API endpoint.

Langfuse v2.49.0

Thu, 06 Jun 2024 15:52:46 GMT

Langfuse v2.49.0 adds token and character count support for Gemini 1.5 Flash and Pro models. • Adds token and character count support for `gemini-1.5-flash` and `gemini-1.5-pro` models. • Switches sessions view from virtualization to pagination for improved navigation. • Adds an upgrade popover to the version number indicator in the UI.

Langfuse v2.48.0

Tue, 04 Jun 2024 22:33:01 GMT

Langfuse v2.48.0 adds a manual annotation drawer with score config settings and a timestamp filter on the user table. • Adds a manual annotation drawer with score config settings for managing and applying score configurations directly from the UI. • Adds a timestamp filter to the user table for narrowing user-level analysis by time range.

Langfuse v2.47.7

Tue, 04 Jun 2024 14:57:11 GMT

Langfuse v2.47.7 adds sessionId filtering on the traces API endpoint. • Adds `sessionId` filter parameter to the traces API endpoint, enabling retrieval of traces scoped to a specific session.

Langfuse v2.47.4

Mon, 03 Jun 2024 16:08:08 GMT

Langfuse v2.47.4 adds prompt tag management via API and expanded model cost previews in the UI. • Adds prompt tags via API, enabling programmatic tagging of prompts. • UI now previews model cost per 1k, 100k, and 1M units for easier cost comparison.

Langfuse v2.47.1

Fri, 31 May 2024 14:15:18 GMT

Langfuse v2.47.1 adds Claude 3 pricing support on Google Vertex and a default 7-day date range filter on scores. • Adds date range filter to scores with a default of 7 days applied across core tables, improving dashboard query performance. • Adds Claude 3 pricing support on Google Vertex for accurate cost tracking.

Langfuse v2.47.0

Thu, 30 May 2024 17:26:52 GMT

Langfuse v2.47.0 adds a JSON linter for prompt/trace inputs and client-side error notifications in the UI. • Adds a linter to JSON inputs in the UI, catching malformed JSON inline before submission. • Adds client-side error notifications in the UI to surface runtime errors directly to the user.

Langfuse v2.46.0

Tue, 28 May 2024 14:05:15 GMT

Langfuse v2.46.0 adds custom API key support in the playground. • Enables use of custom keys in the playground for testing LLM calls with user-supplied credentials.

Langfuse v2.45.1

Mon, 27 May 2024 11:11:15 GMT

Langfuse v2.45.1 adds AWS Cognito as an authentication provider and introduces a score configs table. • Adds AWS Cognito as an OAuth/SSO authentication provider for self-hosted deployments. • Adds a new `score_configs` database table (via migration) to support configurable scoring schemas.

Langfuse v2.45.0

Thu, 23 May 2024 13:51:53 GMT

Langfuse v2.45.0 adds dark mode, playground deep links, a dedicated scores tab, and a new `authorUserId` field on scores. • Adds `authorUserId` (nullable) field to scores, laying groundwork for upcoming annotation releases. • Adds dark mode across the UI. • Adds bidirectional deep links between the playground and both prompt management and tracing views. • Moves the scores table on trace and observation previews into its own dedicated tab.

Langfuse v2.43.2

Fri, 17 May 2024 09:14:29 GMT

Langfuse v2.43.2 adds a data region selector and info modal for cloud deployments. • Adds a data region select UI and info modal for cloud users to view and choose their data residency region.

Langfuse v2.43.0

Thu, 16 May 2024 13:47:04 GMT

Langfuse v2.43.0 lets you disable model parameters in the playground and evals. • Adds the ability to disable model parameters in the playground and evals configurations.

Langfuse v2.41.0

Wed, 15 May 2024 00:10:00 GMT

Langfuse v2.41.0 adds a prompt-version metrics comparison table and API-editable dataset item status. • Adds `status` field on dataset items as writable via the API, enabling programmatic updates to item status. • Adds a `[promptName]/metrics` table view to compare metrics across prompt versions in the UI.

Langfuse v2.40.0

Tue, 14 May 2024 16:04:11 GMT

Langfuse v2.40.0 adds GPT-4o support to the playground and evaluation pipelines. • Adds GPT-4o models as selectable options in the Langfuse playground. • Adds GPT-4o as an available model for running LLM-based evaluations.

Langfuse v2.39.0

Mon, 13 May 2024 23:02:52 GMT

Langfuse v2.39.0 adds GPT-4o pricing/tokenization, a new default datetime offset env var, and score project scoping. • Adds `LANGFUSE_DEFAULT_TABLE_DATETIME_OFFSET` environment variable to control the default datetime offset applied to table views. • Adds pricing information and tokenization support for GPT-4o models. • Adds nullable `projectId` to scores, enabling unordered ingestion of scores (foreign key constraint to be dropped in the next version).

Langfuse v2.38.2

Thu, 09 May 2024 13:40:06 GMT

Adds `LANGFUSE_DISABLE_EXPENSIVE_POSTGRES_QUERIES` env var to skip costly DB queries on large deployments. • Adds optional `LANGFUSE_DISABLE_EXPENSIVE_POSTGRES_QUERIES` environment variable to disable expensive PostgreSQL queries, useful for large-scale deployments where certain queries cause performance issues.

Langfuse v2.38.1

Wed, 08 May 2024 15:42:44 GMT

Langfuse v2.38.1 adds PostHog integration for product analytics. • Adds PostHog integration for product analytics instrumentation.

Langfuse v2.38.0

Sun, 05 May 2024 19:34:40 GMT

Langfuse v2.38.0 adds per-prompt-version generations table and `observationCount` field to the traces table. • Adds `observationCount` field to the traces table, surfacing generation counts directly in the traces view. • Adds a generations table scoped per prompt version, with an accordion to show or hide generations inline on prompt version pages.

Langfuse v2.37.3

Thu, 02 May 2024 15:41:37 GMT

Langfuse v2.37.3 adds post-login redirect to the originally requested path. • Redirects users to the original `targetPath` after login, preserving deep links when authentication is required.

Langfuse v2.37.0

Mon, 29 Apr 2024 18:35:59 GMT

Langfuse v2.37.0 adds a v2 prompts API endpoint at `public/v2/prompts`. • Adds `public/v2/prompts` API endpoint, a new v2 version of the prompts API.

Langfuse v2.36.0

Sun, 28 Apr 2024 10:10:07 GMT

Langfuse v2.36.0 adds ENABLE_EVENT_LOG environment variable to control event logging. • Adds `ENABLE_EVENT_LOG` environment variable to control whether event logging is active.

Langfuse v2.34.0

Fri, 26 Apr 2024 08:37:03 GMT

Langfuse v2.34.0 expands eval observability with an eval log, score table integration, config-page logs, and a log table toolbar. • Adds an eval log for tracking evaluation runs and their outcomes. • Adds eval scores to the score table, surfacing evaluation results alongside other scores. • Adds logs directly to the eval config page for in-context observability of evaluation execution. • Adds a toolbar to the log table for faster navigation and filtering. • Links eval templates within eval configs for easier cross-reference. • Improves eval config variable mapping UX for clearer input-to-variable assignment. • Improves API key design in the UI.

Langfuse v2.32.0

Wed, 24 Apr 2024 14:41:40 GMT

Langfuse v2.32.0 adds bring-your-own LLM API key support and managed eval prompt templates. • Adds 'bring your own LLM API key' capability, letting users supply their own API key for LLM-powered features. • Adds Langfuse-managed eval prompt templates, providing ready-to-use templates for LLM-as-a-judge evaluations. • Updates OpenAI model definitions to include newer models for cost and usage tracking.

Langfuse v2.33.0

Wed, 24 Apr 2024 14:39:41 GMT

Langfuse v2.33.0 adds an eval log and refreshes the API key design. • Adds an eval log to surface evaluation execution details in the UI. • Improves the API key design for clearer key management.

Langfuse v2.31.0

Tue, 23 Apr 2024 08:15:59 GMT

Langfuse v2.31.0 launches a Playground feature, available under the Enterprise Edition. • Adds a Playground for interactively testing and iterating on LLM prompts, available in the Enterprise Edition.

Langfuse v2.30.1

Thu, 18 Apr 2024 23:07:26 GMT

Langfuse v2.30.1 adds `countObservations` and nullable `model` to the metrics API endpoint. • Adds `countObservations` field and makes `model` nullable in the metrics API endpoint.

Langfuse v2.30.0

Thu, 18 Apr 2024 16:26:25 GMT

Langfuse v2.30.0 adds concise JSON field rendering in tables and improved sign-in error visibility. • Renders input, output, metadata, and other JSON fields concisely in tables at small row height for easier scanning. • Displays errors on the sign-in page and logs unknown errors to Sentry for faster diagnosis.

Langfuse v2.29.0

Wed, 17 Apr 2024 12:24:58 GMT

Langfuse v2.29.0 adds metadata to datasets and dataset items, plus a score value filter on the scores API. • Adds a score value filter to the scores API endpoint, enabling programmatic retrieval of scores filtered by value. • Adds `metadata` field support to datasets and dataset items, allowing structured metadata to be attached to both objects.

Langfuse v2.28.0

Tue, 16 Apr 2024 16:08:32 GMT

Langfuse v2.28.0 adds timestamp filtering to the daily metrics API and moves evals to its own main menu entry. • Adds `fromTimestamp` and `toTimestamp` query parameters to the `GET /metrics/daily` API endpoint, enabling scoped time-range queries against daily metrics. • Moves evals to a dedicated top-level main menu entry in the UI, surfacing them as a first-class navigation destination.

Langfuse v2.27.0

Tue, 16 Apr 2024 10:19:47 GMT

Langfuse v2.27.0 adds domain-specific SSO provider support for enterprise deployments. • Adds domain-specific SSO providers (enterprise edition), enabling different identity providers to be mapped per email domain.

Langfuse v2.25.0

Sat, 13 Apr 2024 22:03:15 GMT

Langfuse v2.25.0 removes row limits on trace/generation input-output views in session displays. • Removes the previous cap on the number of trace and generation rows visible when viewing input/output data in a session.

Langfuse v2.24.1

Fri, 12 Apr 2024 22:22:58 GMT

Langfuse Docker images now available on Docker Hub in addition to GitHub Container Registry. • Langfuse Docker images are now published to Docker Hub (`langfuse/langfuse`) in addition to the existing GitHub Container Registry distribution.

Langfuse v2.24.0

Thu, 11 Apr 2024 21:14:42 GMT

Langfuse v2.24.0 adds a UI for eval config creation and OpenAI GPT-4 Turbo model support. • Adds a UI for creating evaluation configurations, enabling teams to set up eval configs without direct API or config-file access. • Adds OpenAI GPT-4 Turbo as a supported model for evaluations. • Inactive eval configs are now skipped during processing, reducing unnecessary worker load. • Adds graceful shutdown handling for the evaluation worker. • Adds security headers to the evaluation worker service.

Langfuse v2.23.0

Thu, 11 Apr 2024 17:30:54 GMT

Langfuse v2.23.0 adds adjustable table row heights and visual output cell highlighting in the UI. • Adds adjustable row height on tables with improved rendering of JSON and data cells. • Applies a light-green background to `output` table cells for quicker visual distinction between input and output data.

Langfuse v2.21.2

Wed, 10 Apr 2024 22:28:17 GMT

Adds `AUTH_DISABLE_SIGNUP` environment variable to block all new user registrations. • Adds `AUTH_DISABLE_SIGNUP` environment variable to disable all new signups, enabling operators to lock down self-hosted instances to existing users only.

Langfuse v2.21.1

Wed, 10 Apr 2024 15:52:23 GMT

Langfuse v2.21.1 adds up/down navigation on traces and dataset items when viewed from dataset run items. • Enables up/down keyboard navigation on traces and dataset items when accessed from dataset run items.

Langfuse v2.21.0

Wed, 10 Apr 2024 12:53:01 GMT

Langfuse v2.21.0 adds a `failIfNoEventsInLastMinute` health-check flag, dataset I/O visibility, source trace links, and a CodeMirror JSON editor across datasets, models, and prompts. • Adds `failIfNoEventsInLastMinute` flag to the `/health` API endpoint, enabling liveness checks that fail when no events have been ingested in the last minute. • Introduces column visibility controls on all dataset tables in the UI. • Surfaces input/output and expected output fields directly on dataset run items in the UI. • Adds links from dataset run items back to their source trace or observation in the UI. • Replaces the JSON editor across datasets, model tokenizer config, and prompt config with a CodeMirror-based editor (react-codemirror). • Enables playground model parameters to be reused for LLM-based evaluations.

Langfuse v2.20.0

Tue, 09 Apr 2024 13:36:36 GMT

Langfuse v2.20.0 adds prompt tags with filtering/sorting, dashboard tag filters, and richer dataset API references. • Adds `runName` and `datasetName` reference fields to all dataset API endpoints, enabling richer cross-referencing in dataset responses. • Adds tags to prompts with support for filtering, sorting, and pagination in the prompt management UI. • Adds tag filtering to the dashboard for narrowing observability views by tag.

Langfuse v2.19.0

Mon, 08 Apr 2024 21:08:52 GMT

GET /observations now exposes `promptId` in API responses. • Exposes `promptId` field via the `GET /observations` API endpoint, enabling callers to trace which prompt produced a given observation.

Langfuse v2.18.1

Mon, 08 Apr 2024 20:08:01 GMT

Langfuse v2.18.1 adds a worker health check endpoint. • Adds a worker health check to monitor the status of background workers.

Langfuse v2.18.0

Mon, 08 Apr 2024 18:12:51 GMT

Langfuse v2.18.0 adds a basic evaluation function capability. • Adds an evaluation basic function for assessing LLM outputs within the platform.

Langfuse v2.17.0

Mon, 08 Apr 2024 09:31:55 GMT

Langfuse v2.17.0 adds chat prompt support to the prompt management system. • Adds chat prompts, enabling prompt management for chat-style (multi-turn) message formats alongside existing text prompts.

Langfuse v2.16.0

Thu, 04 Apr 2024 23:31:51 GMT

Langfuse v2.16.0 adds dataset listing, trace-to-dataset-item creation, and descriptions for datasets and runs via API. • Adds `GET /datasets` endpoint to list all datasets. • Adds `description` field to datasets and runs; adds `datasetName` field to `GET runs/[runName]` response. • Enables creating a dataset item directly from an existing trace via the datasets API.

Langfuse v2.15.5

Thu, 04 Apr 2024 19:09:02 GMT

Dataset item inputs can now be nullable in Langfuse v2.15.5 • Allows dataset item `input` fields to be nullable, enabling dataset entries with no input value.

Langfuse v2.15.4

Wed, 03 Apr 2024 21:47:41 GMT

Langfuse v2.15.4 lets dataset run items link to full traces, not just observations. • Dataset run items can now be connected to traces in addition to observations, enabling full-trace context when reviewing dataset runs.

Langfuse v2.15.3

Tue, 02 Apr 2024 10:57:38 GMT

Langfuse v2.15.3 adds Auth0 as a supported authentication provider for self-hosted deployments. • Adds Auth0 as a supported authentication provider, configurable via self-host environment variables.

Langfuse v2.15.2

Tue, 02 Apr 2024 10:23:32 GMT

Langfuse v2.15.2 adds Okta as a supported authentication provider for self-hosted deployments. • Adds Okta as a supported SSO/auth provider, configured via environment variables in self-hosted deployments (see `configuring-environment-variables` in the self-host docs).

Langfuse v2.15.1

Sun, 31 Mar 2024 12:39:14 GMT

Langfuse v2.15.1 adds optional HTTPS enforcement via a new environment variable. • Adds `LANGFUSE_CSP_ENFORCE_HTTPS` environment variable to optionally enforce HTTPS via Content Security Policy.

Langfuse v2.15.0

Fri, 29 Mar 2024 20:52:15 GMT

Langfuse v2.15.0 adds time-based cursor parameters to GET /traces, /scores, and /observations for incremental sync. • Adds `fromTimestamp` query parameter to `GET /traces` and `GET /scores` endpoints to enable time-based cursor pagination for incremental sync into external systems. • Adds `fromStartTime` query parameter to `GET /observations` endpoint for the same time-based cursor sync pattern.

Langfuse v2.14.2

Thu, 28 Mar 2024 00:57:06 GMT

Langfuse v2.14.2 adds a project dropdown in the nav and optional Turnstile captcha on sign-in. • Adds optional Cloudflare Turnstile captcha challenge on the sign-in page to reduce bot and credential-stuffing risk. • Adds a project dropdown to the navigation bar and reorganises settings menu items.

Langfuse v2.14.0

Wed, 27 Mar 2024 11:26:47 GMT

Langfuse v2.14.0 shows human-readable display names in filters while preserving IDs in URLs. • Filter UI now shows human-readable display names instead of raw IDs, while URLs continue to use IDs for stable linking.

Langfuse v2.13.1

Tue, 26 Mar 2024 18:31:52 GMT

Dataset items API now returns results ordered by creation date descending. • Dataset items returned by the API are now ordered by `createdAt` descending, so the most recently created items appear first.

Langfuse v2.13.0

Mon, 25 Mar 2024 22:29:04 GMT

Langfuse v2.13.0 adds pagination to dataset tables and optional metadata on dataset runs. • Adds optional `metadata` field to dataset runs, enabling structured context to be attached to each run. • Adds pagination to the datasets tables in the UI, improving navigation of large dataset collections.

Langfuse v2.12.0

Mon, 25 Mar 2024 08:52:29 GMT

Langfuse v2.12.0 adds a prompt playground and column visibility counts to data tables. • Adds a prompt playground UI for interactively testing and iterating on prompts. • Adds column visibility count to tables, showing how many columns are currently displayed.

Langfuse v2.11.2

Sat, 16 Mar 2024 18:44:06 GMT

Adds per-provider SSO account-linking toggles via new environment variables for Google and GitHub auth. • Adds `AUTH_GOOGLE_ALLOW_ACCOUNT_LINKING` and `AUTH_GITHUB_ALLOW_ACCOUNT_LINKING` environment variables to control whether SSO logins via Google or GitHub are allowed to link to existing accounts. • Project settings UI now always displays the hostname.

Langfuse v2.11.1

Thu, 14 Mar 2024 09:42:45 GMT

Langfuse v2.11.1 adds score `source` tracking, a `level` column in the traces table, and extended prompts table. • Adds `source` field to scores, allowing the origin of each score to be recorded and distinguished. • Adds `level` column to the traces table for at-a-glance severity or log-level visibility across traces. • Extends the prompts table with additional columns for richer prompt management views. • Adds support for the Claude Haiku model in the model catalog.

Langfuse v2.11.0

Mon, 11 Mar 2024 21:45:38 GMT

Langfuse v2.11.0 extends ChatML message rendering to tools and functions in the UI. • Extends ChatML message rendering in the UI to cover additional JSON structures for tools and functions.

Langfuse v2.10.10

Mon, 11 Mar 2024 19:01:13 GMT

Adds `AUTH_AZURE_ALLOW_ACCOUNT_LINKING` env var to trust Azure AD emails for SSO account linking. • Adds `AUTH_AZURE_ALLOW_ACCOUNT_LINKING` environment variable to enable trusting Azure AD email addresses for SSO account linking.

Langfuse v2.10.9

Mon, 11 Mar 2024 15:55:48 GMT

Langfuse v2.10.9 adds a copyable LlamaIndex code snippet in the API popup. • Adds a copyable LlamaIndex integration snippet inside the API popup, making it faster to wire up LlamaIndex projects.

Langfuse v2.10.7

Thu, 07 Mar 2024 23:27:52 GMT

Langfuse v2.10.7 adds cost tracking to dataset run table and Claude 3 model support. • Adds cost column to the dataset run table, surfacing per-run cost data alongside existing metrics. • Adds support for Claude 3 models in cost and usage tracking.

Langfuse v2.10.0

Wed, 06 Mar 2024 13:41:25 GMT

Langfuse v2.10.0 adds latency tables for traces/spans/generations and extends CSV/JSON export for generations. • Extends generations CSV and JSON export with additional fields. • Adds latency tables for traces, spans, and generations with tooltip support. • Extends the traces table with additional columns. • Extends the sessions table with additional columns. • Enables renaming of datasets.

Langfuse v2.9.0

Thu, 29 Feb 2024 13:50:23 GMT

Langfuse v2.9.0 adds fields to GET /traces, extends the generations table, and alerts on JSONL export scope. • Adds `input`, `output`, `sessionId`, and `public` fields to the `GET /traces` API endpoint. • Extends the generations table in the UI with additional columns. • Adds an alert in the UI that only ChatML generations are exported as JSONL.

Langfuse v2.8.0

Fri, 23 Feb 2024 19:24:49 GMT

Langfuse v2.8.0 adds a dedicated GET /score/{scoreId} endpoint and a JSON editor for dataset items. • Adds `GET /score/{scoreId}` API endpoint to retrieve individual scores by ID. • New JSON editor for dataset items in the UI, replacing the previous plain-text input.

Langfuse v2.7.0

Tue, 20 Feb 2024 19:05:54 GMT

Langfuse v2.7.0 adds `htmlPath` and `totalCost` to the trace API and introduces prompt config support. • Adds `htmlPath` and `totalCost` fields to the `GET /traces/{id}` API response, enabling cost retrieval and direct UI deep-linking per trace. • Adds prompt config support, allowing configuration to be attached to prompts.

Langfuse v2.6.0

Mon, 19 Feb 2024 22:38:06 GMT

Langfuse v2.6.0 adds score deletion, a daily metrics endpoint, richer trace fields, and OpenAI function-call previews in the UI. • Adds `DELETE /api/public/score/[scoreId]` endpoint to programmatically delete individual scores. • Adds `GET /api/public/metrics/daily` endpoint for retrieving daily usage metrics. • Adds `htmlPath`, `latency`, and `totalCost` fields to `GET /api/public/traces` responses. • Adds traces filter to the dashboard UI for narrowing displayed data. • Adds preview rendering of OpenAI function calls in the UI. • Shows total model cost per user in the UI. • Displays total cost of a session in the UI. • Adds 75th percentile to the latency graph in the UI. • Shows full session IDs in the session table.

Langfuse v2.5.1

Fri, 16 Feb 2024 02:13:57 GMT

Langfuse v2.5.1 lets you supply an explicit timestamp when creating a trace via the API. • Adds optional `timestamp` field to the create-trace API endpoint, enabling callers to set an explicit timestamp rather than accepting a server-generated one.

Langfuse v2.5.0

Thu, 15 Feb 2024 22:14:18 GMT

Langfuse v2.5.0 adds latency data to the generations API endpoints. • Adds `latency` field to generations API endpoints, enabling programmatic latency analysis on generation data.

Langfuse v2.4.1

Tue, 13 Feb 2024 12:27:27 GMT

Langfuse v2.4.1 adds audit logging and updated OpenAI pricing data. • Adds audit logging to track security-relevant actions across the platform. • Updates OpenAI model pricing data for more accurate cost tracking.

Langfuse v2.4.0

Mon, 12 Feb 2024 16:53:46 GMT

Langfuse v2.4.0 adds collapsible/color-coded trace trees and prompt deletion with variable deduplication. • Adds collapse/expand controls and color coding by observation type to the trace view observation tree in the UI. • Adds the ability to delete prompts and individual prompt versions, and deduplicates prompt variables in the prompt editor.

Langfuse v2.3.0

Fri, 09 Feb 2024 20:42:15 GMT

Langfuse v2.3.0 adds in-product feature notifications, quickstart examples on API key creation, and a dashboard request button. • Adds quickstart examples directly in the API key creation popup to help new users get started faster. • Adds in-product notifications to surface new features to users without leaving the UI. • Adds a 'Request Dashboard' button in the UI for users to submit dashboard feature requests.

Langfuse v2.2.0

Wed, 07 Feb 2024 10:07:20 GMT

Langfuse v2.2.0 adds score name selection in dashboard charts and expands generation model units. • Dashboard charts now support interactive selection of score names in the legend and a slider for filtering, enabling more focused LLM evaluation views. • Expands the unit types tracked for generation models, broadening cost and usage measurement coverage.

Langfuse v2.1.0

Thu, 01 Feb 2024 20:09:53 GMT

Langfuse v2.1.0 adds custom regex matching and unrestricted pricing for user-defined models. • Supports custom regex patterns for matching user-defined models, enabling flexible model name recognition beyond built-in presets. • Allows setting input, output, and total price for user-defined models without restrictions, enabling accurate cost tracking for any custom or private model.

Langfuse v2.0.1

Thu, 01 Feb 2024 15:32:04 GMT

Langfuse v2.0.1 adds built-in model definitions for OpenAI fine-tuned and Vertex AI models. • Adds support for OpenAI fine-tuned and Vertex AI models in the model catalog for cost and usage tracking.

Langfuse v2.0.0

Tue, 30 Jan 2024 19:12:58 GMT

Langfuse v2.0 rebuilds LLM cost tracking with custom model definitions, per-project pricing, and score filtering on generations. • Adds custom model/price definitions at the project level, enabling tracking of newly emerging models and price changes over time via the new model definition abstraction. • Supports setting token usage and cost directly via the API when ingesting traces. • Surfaces usage and cost information across all UI tables and APIs. • Adds score-based filtering to the generations table in the UI. • Adds an improved prompt UI with better versioning support. Breaking changes: • Self-hosted deployments require a one-off (non-blocking) migration script on historical data to ensure accurate LLM costs; see https://langfuse.com/changelog/2024-01-29-custom-model-prices#upgrade-path for the upgrade path.

Langfuse v1.34.0

Tue, 23 Jan 2024 22:04:29 GMT

Langfuse v1.34.0 adds column ordering to the generations and sessions tables in the UI. • Adds column ordering to the generations table in the UI. • Adds column ordering to the sessions table in the UI.

Langfuse v1.33.9

Mon, 22 Jan 2024 12:11:52 GMT

Langfuse v1.33.9 adds ordering support to the traces GET API endpoint. • Adds ordering support to the `GET /api/traces` endpoint, enabling sorted trace retrieval via the API.

Langfuse v1.33.8

Fri, 19 Jan 2024 10:58:31 GMT

Langfuse v1.33.8 adds a persistent tracing side menu option in the UI. • Adds option in the UI to keep the tracing side menu open persistently across navigation.

Langfuse v1.33.7

Wed, 17 Jan 2024 20:18:53 GMT

Langfuse v1.33.7 adds array-of-strings support in model parameters. • Supports arrays of strings as values in model parameters.

Langfuse v1.33.0

Tue, 16 Jan 2024 16:45:05 GMT

Langfuse v1.33.0 adds a UI for managing tags on traces. • Adds UI support for tags on traces, enabling practitioners to label and organize traces directly from the interface.

Langfuse v1.32.0

Mon, 15 Jan 2024 18:10:49 GMT

Langfuse v1.32.0 adds UI navigation to datasets and dataset items. • Adds navigation to datasets and dataset items in the UI.

Langfuse v1.31.3

Mon, 15 Jan 2024 10:26:17 GMT

Langfuse v1.31.3 adds time-to-first-token display in the observation detail view. • Shows time-to-first-token metric in the observation detail view, giving practitioners direct visibility into LLM streaming latency per observation.

Langfuse v1.31.1

Thu, 11 Jan 2024 16:45:46 GMT

Langfuse v1.31.1 adds tokenization support for Azure-style `gpt-35*` model names. • Tokenization now recognizes `gpt-35*` as an alternative model name alias for `gpt-3.5*`, enabling accurate token counting for Azure OpenAI deployments that use the hyphen-less naming convention.

Langfuse v1.31.0

Tue, 09 Jan 2024 11:02:09 GMT

Langfuse v1.31.0 adds dataset deletion, a redesigned nested navigation, and a referral source prompt for new cloud users. • Enables permanent deletion of unused datasets instead of archiving them. • Redesigns the main navigation with an improved nested layout. • Prompts new cloud users to provide a referral source on sign-up.

Langfuse v1.30.0

Sat, 06 Jan 2024 01:38:10 GMT

Langfuse v1.30.0 adds a `tags` filter to the GET /traces public API route. • Adds `tags` filter parameter to the `GET /traces` public API endpoint, enabling retrieval of traces filtered by tag.

Langfuse v1.29.0

Fri, 05 Jan 2024 14:03:11 GMT

Langfuse v1.29.0 adds tag support for traces. • Adds tags for traces, enabling categorization and filtering of trace data.

Langfuse v1.28.1

Fri, 05 Jan 2024 10:50:42 GMT

Langfuse v1.28.1 adds a password visibility toggle on sign-in and sign-up forms. • Adds a show/hide password toggle to the sign-in and sign-up forms.

Langfuse v1.28.0

Thu, 04 Jan 2024 21:46:59 GMT

Langfuse v1.28.0 adds session trace navigation and toggleable metrics/scores in the trace view. • Adds previous/next navigation controls in the UI to move between traces within a session. • Adds the ability to show or hide metrics and scores on the observation tree when viewing a single trace.

Langfuse v1.27.0

Tue, 02 Jan 2024 18:58:50 GMT

Langfuse v1.27.0 adds ordering support for traces in the UI and API. • Adds ordering functionality for traces, available in both the UI and API.

Langfuse v1.26.0

Tue, 02 Jan 2024 13:52:30 GMT

Langfuse v1.26.0 exposes the running server version via the `/health` endpoint. • The `GET /health` endpoint now returns the running Langfuse server version, enabling automated version-checks in health monitoring pipelines.

Langfuse v1.25.0

Sun, 31 Dec 2023 13:51:26 GMT

Langfuse v1.25.0 introduces prompt management with versioning, RBAC controls, and a dedicated UI. • Adds prompt management, enabling teams to create, version, and retrieve prompts directly within Langfuse. • Supports fetching a specific prompt version via the API, enabling pinned prompt deployments. • RBAC scopes now control visibility of prompt management and other features in the main menu, restricting access by role.

Langfuse v1.24.2

Wed, 27 Dec 2023 15:01:00 GMT

Langfuse v1.24.2 introduces more compact data tables with reduced padding in the UI. • Data tables in the UI are now more compact with less padding, improving information density.

Langfuse v1.24.0

Sun, 24 Dec 2023 02:36:26 GMT

Langfuse v1.24.0 adds AzureAD authentication support and custom plan limit visibility in project settings. • Adds AzureAD as a supported authentication provider. • Displays custom plan limits in project settings for cloud deployments.

Langfuse v1.23.0

Fri, 22 Dec 2023 18:37:20 GMT

Langfuse v1.23.0 adds middle-click/open-in-new-window support in tables and host name display on project settings. • Displays host name on the project settings page for easier environment identification. • Enables middle-click and 'open in new window' navigation for table rows throughout the UI.

Langfuse v1.22.0

Fri, 22 Dec 2023 11:40:21 GMT

Langfuse v1.22.0 adds optional `SHADOW_DATABASE_URL` env var support and in-app version display. • Adds optional `SHADOW_DATABASE_URL` environment variable support for Docker deployments to configure a shadow database. • Displays the current application version in the UI to aid debugging of version conflicts and upgrades.

Langfuse v1.21.0

Fri, 22 Dec 2023 06:37:44 GMT

Langfuse v1.21.0 adds optional S3-backed data exports and a `DIRECT_URL` env var for pooled database connections. • Adds `DIRECT_URL` environment variable to set a direct Postgres connection URL when `DATABASE_URL` points to a connection pooler or a limited-privilege user. • Adds optional S3 backend for data exports, configurable via environment variables.

Langfuse v1.20.0

Thu, 21 Dec 2023 15:39:12 GMT

Langfuse v1.20.0 adds SDK log event support to the ingestion API. • Adds `sdk-log` event type to the ingestion API, enabling SDKs to send log events alongside traces and observations.

Langfuse v1.19.3

Tue, 19 Dec 2023 12:13:57 GMT

Langfuse v1.19.3 adds a cost column to the generations table. • Adds a cost column to the generations table for at-a-glance LLM spend visibility.

Langfuse v1.19.1

Mon, 18 Dec 2023 08:27:15 GMT

Langfuse v1.19.1 promotes Sessions to general availability, removing the beta label from the main menu. • Sessions feature is now generally available, removed from beta status in the main menu UI.

Langfuse v1.19.0

Sun, 17 Dec 2023 23:08:51 GMT

Langfuse v1.19.0 adds multi-select trace deletion, enter-to-search in tables, and metadata support in the ingestion API. • Adds `metadata` field to the ingestion API, allowing structured metadata to be attached to trace ingestion payloads. • Adds multi-select and bulk delete for traces in the UI. • Adds enter-key-triggered search across tables in the UI.

Langfuse v1.18.0

Fri, 15 Dec 2023 09:20:39 GMT

Langfuse v1.18.0 adds API support for v2 SDKs. • Adds API support for v2 SDKs, enabling clients using the v2 SDK to communicate with the Langfuse server.

Langfuse v1.17.0

Wed, 13 Dec 2023 02:29:16 GMT

Langfuse v1.17.0 adds session tracking with I/O on traces and score comments visible on hover across the UI. • Adds session tracking with input/output capture on traces, enabling grouping and replay of multi-turn LLM interactions. • Score comments are now visible on hover throughout the UI, surfacing annotation context inline without navigating away.

Langfuse v1.16.0

Tue, 12 Dec 2023 13:58:39 GMT

Langfuse v1.16.0 adds project renaming in settings and X-Frame-Options security header. • Adds `X-Frame-Options` HTTP response header to protect against clickjacking attacks. • Enables renaming a project from the project settings UI.

Langfuse v1.15.0

Mon, 11 Dec 2023 19:56:34 GMT

Langfuse generations table now surfaces level, status message, and metadata columns. • Adds level, status message, and metadata columns to the generations table in the UI.

Langfuse v1.14.0

Wed, 06 Dec 2023 22:45:46 GMT

Langfuse v1.14.0 adds latency filtering for traces in the UI. • Adds latency filtering for traces in the UI, enabling practitioners to quickly isolate slow LLM calls.

Langfuse v1.13.3

Tue, 05 Dec 2023 20:48:16 GMT

Langfuse v1.13.3 adds individual database connection environment variables as an alternative to DATABASE_URL • Adds `DATABASE_HOST`, `DATABASE_USERNAME`, `DATABASE_PASSWORD`, and `DATABASE_NAME` environment variables as an alternative to the single `DATABASE_URL` environment variable for database configuration.

Langfuse v1.13.0

Mon, 04 Dec 2023 12:23:20 GMT

Langfuse v1.13.0 adds API/SDK trace publishing and configurable table column visibility. • Enables publishing traces via the API and SDK. • Adds configurable visibility of table columns in the UI.

Langfuse v1.12.0

Sun, 03 Dec 2023 00:01:05 GMT

Langfuse v1.12.0 adds one-click formatted JSON copying in the UI. • Adds a 'copy formatted JSON' action in the UI for cleaner, human-readable JSON output when inspecting trace data.

Langfuse v1.11.0

Fri, 01 Dec 2023 22:52:05 GMT

Langfuse v1.11.0 adds env-var-driven default project assignment on sign-up and improved project invitation emails. • Adds `LANGFUSE_DEFAULT_PROJECT_ID` and `LANGFUSE_DEFAULT_PROJECT_ROLE` environment variables to automatically grant new sign-ups access to a default project with a specified role. • Sends styled HTML email invitations to non-account users invited to a project.

Langfuse v1.10.0

Thu, 30 Nov 2023 22:49:36 GMT

Langfuse v1.10.0 adds upsert support and a GET API for dataset items. • Adds upsert capability and a GET API endpoint for dataset items, enabling idempotent writes and programmatic retrieval of individual dataset entries.

Langfuse v1.9.0

Wed, 29 Nov 2023 02:53:29 GMT

Langfuse v1.9.0 lets you invite new users to a project before they have an account, with optional email notifications via SMTP. • Adds `EMAIL_FROM_ADDRESS` and `SMTP_CONNECTION_URL` environment variables to enable email notifications when inviting new (accountless) users to a project. • Supports inviting users to a project who do not yet have a Langfuse account.

Langfuse v1.8.2

Wed, 29 Nov 2023 00:51:00 GMT

Langfuse v1.8.2 adds project name display to the UI breadcrumb. • Shows the project name in the UI breadcrumb for easier navigation across projects.

Langfuse v1.8.0

Tue, 28 Nov 2023 01:57:07 GMT

Langfuse v1.8.0 adds the ability to bookmark traces in the UI. • Adds bookmark support for traces in the UI, with bookmark state cached in the component for fast interaction.

Langfuse v1.7.0

Sat, 25 Nov 2023 12:44:41 GMT

Langfuse v1.7.0 adds a projects API endpoint for SDK-side API key validation. • Adds a projects API endpoint to validate API keys from within SDKs.

Langfuse v1.6.0

Fri, 24 Nov 2023 01:05:19 GMT

Langfuse v1.6.0 adds 'does not contain' string filters, SSO on sign-up, and a data region switch for Cloud. • Adds 'does not contain' filter option for string fields in the UI, enabling negative-match filtering across traces and other string-based views. • Surfaces SSO options on the `/auth/sign-up` page so users can discover and use single sign-on at registration time. • Adds a data region switch for Langfuse Cloud, letting users select their preferred hosting region.

Langfuse v1.5.0

Tue, 21 Nov 2023 13:42:10 GMT

Langfuse v1.5.0 adds an env var to enforce SSO-only login and disable username/password auth. • Adds `AUTH_DISABLE_USERNAME_PASSWORD` environment variable to enforce SSO-only authentication, preventing username/password login.

Langfuse v1.4.0

Mon, 20 Nov 2023 21:06:21 GMT

Langfuse v1.4.0 adds the ability to transfer project ownership to a new owner. • Adds 'Transfer project to new owner' capability, allowing project ownership to be reassigned within Langfuse.

Langfuse v1.3.0

Sun, 19 Nov 2023 22:57:22 GMT

Langfuse v1.3.0 adds single-trace deletion in the UI, a health check API endpoint, and project name display in the header. • Adds `GET /api/public/health` endpoint for health-check monitoring of the Langfuse service. • Enables deletion of individual traces directly from the UI. • Displays the project name in the application header for clearer multi-project context. • Removes the separate cron process used for telemetry in the Docker deployment, simplifying the container footprint.

Langfuse v1.2.0

Thu, 16 Nov 2023 22:49:54 GMT

Langfuse v1.2.0 adds more string filters to the UI. • Adds more string filter options to the UI for querying traces and observations.

Langfuse v1.1.0

Thu, 16 Nov 2023 01:28:51 GMT

Langfuse v1.1.0 adds upsert support for scores via the API. • Adds upsert support for scores via the API, allowing existing score records to be created or updated in a single call.