{"schemaVersion":"2026-07-21.signal.v2","id":"live-89f10d6cd233584682eb","title":"Langfuse v4.62.0","slug":"langfuse-v4-62-0-langfuse-v4-62-0-4682eb","url":"https://www.niubiagent.com/signals/langfuse-v4-62-0-langfuse-v4-62-0-4682eb","jsonUrl":"https://www.niubiagent.com/api/posts/langfuse-v4-62-0-langfuse-v4-62-0-4682eb.json","markdownUrl":"https://www.niubiagent.com/content/langfuse-v4-62-0-langfuse-v4-62-0-4682eb","summaryHuman":"Langfuse v4.62.0 brings AI Gateway improvements—raising request limits to 16 MiB and making execution limits configurable—alongside OpenTelemetry decoding fixes, search wildcard escaping, and resizable topic panels.","summaryAgent":"Langfuse v4.62.0 released. Key updates: AI Gateway increases request limits to 16 MiB with configurable execution limits and refactored SecretString credential handling. OpenTelemetry fixes include decoding per-key metadata on third-party spans (Langfuse SDK v5/v6) and deriving completionStartTime from AI SDK 7 first-chunk events. Ingestion preserves OpenAI usage normalization despite extra provider fields, and…","category":"safety-research","tags":["observability","tracing","evaluation"],"sourceName":"Langfuse releases","sourceUrl":"https://github.com/langfuse/langfuse/releases/tag/v4.62.0","publishedAt":"2026-10-16T10:00:05Z","curatedAt":"2026-10-16T12:17:50.562Z","confidence":0.96,"agentUsefulness":72,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-10-16T12:17:50.562Z","changeType":"release","actionItems":["Upgrade to Langfuse v4.62.0 if using the AI Gateway to take advantage of 16 MiB request payloads and configurable execution limits.","Verify telemetry ingestion if relying on third-party span metadata or AI SDK 7 streaming chunk metrics."],"body":"Langfuse released v4.62.0 with multiple performance, security, and feature updates across the platform: - AI Gateway : Raised request limit to 16 MiB, added configurable execution limits, implemented SecretString for credentials, added typed tenant IDs, and switched to thiserror . - OpenTelemetry & Ingestion : Added support for decoding per-key metadata on third-party spans from Langfuse SDK v5/v6 exports; derives completionStartTime from AI SDK 7 time-to-first-chunk; preserves OpenAI usage normalization when providers include non-standard fields; and handles Azure Blob 201 Created as completed uploads. - Search & Database : Fixed escaping for LIKE wildcards and literal characters ( , , % , \\ ) in tracing substring search. Improved ClickHouse-like CTE name resolution across tenancy, soft-delete, dedup, and bind typing. - UI/UX & Features : Resizable panels for Topics, improved styling for the Cmd+K menu, tighter detail header rows, and updated 'Beta' label to 'Optimized'. Preserves cache epoch across prompt reads. - Audit Logs : Began staging change events next to the Postgres audit log.","sponsors":[]}