# Langfuse v4.70.0

Category: safety-research
Published: 2026-10-24T12:54:58Z
Source: [Langfuse releases](https://github.com/langfuse/langfuse/releases/tag/v4.70.0)
Agent usefulness: 77/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-24T18:18:01.364Z
Tags: observability, tracing, evaluation

## Human Summary
Langfuse releases published Langfuse v4.70.0. What's Changed Features feat(public-api): add unstable read-only Topics endpoints by @LysanderKie in 19104 feat(ai-gateway): update Claude Desktop setup steps and merge Claude tabs by @wochinge in 19298 feat(web): warn ClickHouse staff viewing data by @maxdeichmann in 19266 feat(web): syntax-highlight shell,…

## Agent Summary
Treat Langfuse v4.70.0 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
Langfuse releases published Langfuse v4.70.0. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: What's Changed Features feat(public-api): add unstable read-only Topics endpoints by @LysanderKie in 19104 feat(ai-gateway): update Claude Desktop setup steps and merge Claude tabs by @wochinge in 19298 feat(web): warn ClickHouse staff viewing data by @maxdeichmann in 19266 feat(web): syntax-highlight shell, TOML and JSON setup snippets by @wochinge in 19306 feat(ai-gateway): describe gateway keys inline and invite people from the keys page by @wochinge in 19310 feat(evals): runBatchEvaluation MCP tool and batch action id on batch run outputs by @wochinge in 19314 feat(web): jump to prompts, datasets, queues and evaluators from Cmd+K by @nmtrang29 in 18921 Fixes fix(security): require secrets again when webhook or PostHog destination changes by @niklassemmler in 19261 perf(scores): sort skip-dedup score lists by day first by @niklassemmler in 19311 fix(clickhouse): label client-closed…

## Recommended actions
- Review the official Langfuse releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.