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langfuse

v3.213.0 Feature

This release adds 5 notable features for engineering teams evaluating rollout.

Published 12d Tracing
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

analytics autogen evaluation langchain large-language-models llama-index
+12 more
llm llm-evaluation llm-observability llmops monitoring observability openai playground prompt-engineering prompt-management self-hosted ycombinator

Summary

AI summary

Broad release touches Fixes / Improvements, Chores, web, and agent.

Changes in this release

Feature Low

Adds copy-session-id button to session detail header.

Adds copy-session-id button to session detail header.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Feature Low

Adds optional footer to TablePeekView for navigation controls.

Adds optional footer to TablePeekView for navigation controls.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Feature Low

Makes Redis socket timeout configurable via REDIS_SOCKET_TIMEOUT_MS environment variable.

Makes Redis socket timeout configurable via REDIS_SOCKET_TIMEOUT_MS environment variable.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Feature Low

Enables monitors for self‑hosted deployments with events writes.

Enables monitors for self‑hosted deployments with events writes.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Feature Low

Adds contract‑aware autocomplete to the code evaluator editor.

Adds contract‑aware autocomplete to the code evaluator editor.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Dependency Low

Bumps @opentelemetry/propagator-jaeger to version 2.9.0.

Bumps @opentelemetry/propagator-jaeger to version 2.9.0.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Bugfix Medium

Fixes date‑range window handling in eval preview tables.

Fixes date‑range window handling in eval preview tables.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Bugfix Medium

Fixes trace cost calculation in assistant component.

Fixes trace cost calculation in assistant component.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Bugfix Medium

Makes preset deletion idempotent in table‑views.

Makes preset deletion idempotent in table‑views.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Bugfix Medium

Prevents background‑migration chunk queries from being killed by PHP max_execution_time.

Prevents background‑migration chunk queries from being killed by PHP max_execution_time.

Source: llm_adapter@2026-07-14

Confidence: high

 —
Full changelog

What's Changed

Features

  • feat(monitors): enable monitors for self-hosted deployments with events writes by @Steffen911 in https://github.com/langfuse/langfuse/pull/14938
  • feat(evals): add contract-aware autocomplete to the code evaluator editor by @wochinge in https://github.com/langfuse/langfuse/pull/14992
  • feat(agents): fold React-without-useEffect principles into frontend skill (LFE-10842) by @nkabardin in https://github.com/langfuse/langfuse/pull/14994
  • feat(peek): add optional footer to TablePeekView for navigation controls by @marliessophie in https://github.com/langfuse/langfuse/pull/14246
  • feat(blobstorage): write run-completion manifest per export run (LFE-10843) by @niklassemmler in https://github.com/langfuse/langfuse/pull/14995
  • feat(redis): make socket timeout configurable via REDIS_SOCKET_TIMEOUT_MS by @Steffen911 in https://github.com/langfuse/langfuse/pull/15037
  • feat(web): add copy-session-id button to session detail header by @CodeCLS in https://github.com/langfuse/langfuse/pull/14996

Fixes / Improvements

  • fix(web): Remove usages of slate- color classes by @bezbac in https://github.com/langfuse/langfuse/pull/14984
  • refactor(blobstorage): split settings page into feature components by @niklassemmler in https://github.com/langfuse/langfuse/pull/14964
  • fix(web): honor date-range window in eval preview tables by @CodeCLS in https://github.com/langfuse/langfuse/pull/14982
  • fix(assistant): trace cost correctly by @nimarb in https://github.com/langfuse/langfuse/pull/14945
  • fix(table-views): make preset deletion idempotent by @sumerman in https://github.com/langfuse/langfuse/pull/14990
  • fix(filters): route legacy score filters by type by @sumerman in https://github.com/langfuse/langfuse/pull/14991
  • fix(agent): Improve UX around rate-limiting by @bezbac in https://github.com/langfuse/langfuse/pull/14997
  • fix(audit-log): Include userId in in-app agent api-key audit logs by @bezbac in https://github.com/langfuse/langfuse/pull/14920
  • refactor(monitors): remove unnecessary use of useEffect by @marksalpeter in https://github.com/langfuse/langfuse/pull/14998
  • fix(web): resolve test-file type errors failing the production next build typecheck by @wochinge in https://github.com/langfuse/langfuse/pull/15031
  • docs(agents): add ClickHouse view and MV migration rules to skills and review checklist by @Steffen911 in https://github.com/langfuse/langfuse/pull/15035
  • fix(auth): Clean up next-auth type definitions by @bezbac in https://github.com/langfuse/langfuse/pull/15032
  • fix(agent): Track loading state of individual events by @bezbac in https://github.com/langfuse/langfuse/pull/14988
  • fix(worker): stop 35s max_execution_time from killing fired background-migration chunk queries by @ubinatus in https://github.com/langfuse/langfuse/pull/15001
  • fix(pricing): publish audit memory snapshot changes by @hassiebp in https://github.com/langfuse/langfuse/pull/15042
  • fix(cloud-usage-metering): raise interval count query timeout to 5 minutes by @Steffen911 in https://github.com/langfuse/langfuse/pull/15043
  • fix(storage): make content hashing function for multi-object deletes configurable by @dalaoyang in https://github.com/langfuse/langfuse/pull/14981
  • fix(evals): make code-eval execution traces readable in trace detail (LFE-10884) by @wochinge in https://github.com/langfuse/langfuse/pull/15045
  • fix(prompts): namespace prompt cache selectors by @hassiebp in https://github.com/langfuse/langfuse/pull/15040
  • fix(prompts): type redis keys correctly by @nimarb in https://github.com/langfuse/langfuse/pull/15055
  • fix(clickhouse): avoid atomic view replacement in migration by @ofeliacode in https://github.com/langfuse/langfuse/pull/14951
  • fix(agent): Improve prompt around screen context by @bezbac in https://github.com/langfuse/langfuse/pull/15051
  • fix(agent): Add code generation instructions to system prompt by @bezbac in https://github.com/langfuse/langfuse/pull/15052

Chores

  • chore(events): consolidate event-stream query construction by @sumerman in https://github.com/langfuse/langfuse/pull/14973
  • chore(web): Disable unused tailwind color palettes by @bezbac in https://github.com/langfuse/langfuse/pull/14983
  • chore(shared): Enable knip dep checking & remove unused deps by @bezbac in https://github.com/langfuse/langfuse/pull/14989
  • chore(deps): bump @opentelemetry/propagator-jaeger to 2.9.0 by @nimarb in https://github.com/langfuse/langfuse/pull/15022
  • chore(blobstorage): remove Parquet export-tuning special-casing by @niklassemmler in https://github.com/langfuse/langfuse/pull/15025
  • chore(otel): log SDK, version, instrumentation scopes, and span count on OTEL conversion failures (LFE-10869) by @niklassemmler in https://github.com/langfuse/langfuse/pull/15023
  • chore(pricing): improve audit titles and model reports by @hassiebp in https://github.com/langfuse/langfuse/pull/15029
  • chore(AGENTS.md, skills): Update AGENTS.md to not use 'useEffect' unless its a valid case, add skill to refactor existing components by @LysanderKie in https://github.com/langfuse/langfuse/pull/15021
  • chore(deps): bump js-yaml to 4.3.0 by @nimarb in https://github.com/langfuse/langfuse/pull/15041
  • chore(web): typecheck test files in CI and fix latent test type errors by @wochinge in https://github.com/langfuse/langfuse/pull/15038
  • chore(deps): bump body-parser to 2.3.0 by @nimarb in https://github.com/langfuse/langfuse/pull/15046
  • chore(pricing): 2026-07-13 audit — all active prices confirmed by @langfuse-bot in https://github.com/langfuse/langfuse/pull/15047
  • chore(deps): bump @sentry/nextjs to 10.64.0 by @nimarb in https://github.com/langfuse/langfuse/pull/15057
  • chore: deploy preview deployments by @maxdeichmann in https://github.com/langfuse/langfuse/pull/15020
  • chore(web): Setup eslint useEffect plugin for agent and design system by @bezbac in https://github.com/langfuse/langfuse/pull/14993

New Contributors

  • @ubinatus made their first contribution in https://github.com/langfuse/langfuse/pull/15001
  • @dalaoyang made their first contribution in https://github.com/langfuse/langfuse/pull/14981
  • @ofeliacode made their first contribution in https://github.com/langfuse/langfuse/pull/14951

Full Changelog: https://github.com/langfuse/langfuse/compare/v3.212.0...v3.213.0

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About langfuse

🪢 Open source LLM engineering platform: LLM Observability, metrics, evals, prompt management, playground, datasets. Integrates with OpenTelemetry, Langchain, OpenAI SDK, LiteLLM, and more. YC W23

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Beta — feedback welcome: [email protected]