# Langfuse v4.62.0

Category: safety-research
Published: 2026-10-16T10:00:05Z
Source: [Langfuse releases](https://github.com/langfuse/langfuse/releases/tag/v4.62.0)
Agent usefulness: 72/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-16T12:17:50.562Z
Tags: observability, tracing, evaluation

## Human Summary
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.

## Agent Summary
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…

## 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.

## Recommended actions
- 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.

## 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.