{"schemaVersion":"2026-07-21.signal.v2","id":"live-f5dee909933e0c57a73c","title":"Langfuse v4.55.0","slug":"langfuse-v4-55-0-langfuse-v4-55-0-57a73c","url":"https://www.niubiagent.com/signals/langfuse-v4-55-0-langfuse-v4-55-0-57a73c","jsonUrl":"https://www.niubiagent.com/api/posts/langfuse-v4-55-0-langfuse-v4-55-0-57a73c.json","markdownUrl":"https://www.niubiagent.com/content/langfuse-v4-55-0-langfuse-v4-55-0-57a73c","summaryHuman":"Langfuse v4.55.0 introduces zero-vulnerability and FIPS Docker images, Google Cloud Storage export targets, batch processing for POST /scores, and enhanced skill management and topic summarization.","summaryAgent":"Langfuse v4.55.0 adds FIPS-mode Docker containers, GCS export via service account/ADC, batch /scores endpoint support, OpenAI decision model evals, and improved OTel per-key metadata decoding alongside various UI and worker fixes.","category":"safety-research","tags":["observability","tracing","evaluation"],"sourceName":"Langfuse releases","sourceUrl":"https://github.com/langfuse/langfuse/releases/tag/v4.55.0","publishedAt":"2026-10-08T13:36:14Z","curatedAt":"2026-10-08T18:17:34.446Z","confidence":0.96,"agentUsefulness":77,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-10-08T18:17:34.446Z","changeType":"release","actionItems":["Upgrade to Langfuse v4.55.0 if utilizing self-hosted Docker deployments, particularly if requiring FIPS compliance or zero-vulnerability base images.","Verify integration with the POST /scores endpoint if migrating to batch processing.","Ensure S3 ingestion clients properly handle HTTP 503 with Retry-After headers during throughput spikes.","Configure Google Cloud Storage export configurations if moving trace exports off AWS S3."],"body":"Langfuse release v4.55.0 brings major infrastructure, evaluation, and observability features: - Docker & Security: Introduces zero-vulnerability base images, FIPS mode, and builds FIPS images using Iron Bank Alpine. - Storage & Ingestion: Adds Google Cloud Storage export targets (service account key or ADC), improves S3 ingestion resilience with extended retries and 503/Retry-After responses during throttling, and prepares OTel per-key metadata decoding for upcoming SDK majors. - Evals & Scores: Updates POST /scores to support batch processing, adds evaluation support for OpenAI decision models, and generates single evaluator execution records. - Skills & Topics: Enhances the Skills module with local/ZIP file imports, rendered previews, version diffing, and draft recovery. Updates Topics to summarize all trace facets in one call and cache prompt prefixes on Bedrock. - Access Control & API: Resolves API key authorization from SystemRoleAssignments and independently gates project/organization presets. - Fixes: Addresses session navigation double URL encoding, worker batch project scoping, ClickHouse billing usage tracking, and evaluator cyclic result handling.","sponsors":[]}