langfuse

v3.219.0 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 9d Tracing

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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

Updates web, Chores, and sfdc across a mixed release.

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Medium	Adds plan and lead sources to SFDC sync and prep backfill script Adds plan and lead sources to SFDC sync and prep backfill script Source: llm_adapter@2026-07-17 Confidence: high	—
Feature	Medium	Updates dark mode with new layering model in web UI Updates dark mode with new layering model in web UI Source: llm_adapter@2026-07-17 Confidence: high	—
Feature	Medium	Makes assistant quick actions context‑aware and extends coverage Makes assistant quick actions context‑aware and extends coverage Source: llm_adapter@2026-07-17 Confidence: high	—
Feature	Medium	Deep‑links monitor alerts to the traces/observations table for breaching window (LFE-11022) Deep‑links monitor alerts to the traces/observations table for breaching window (LFE-11022) Source: llm_adapter@2026-07-17 Confidence: high	—
Dependency	Low	Bumps ws dependency to version 8.21.1 Bumps ws dependency to version 8.21.1 Source: llm_adapter@2026-07-17 Confidence: high	—
Bugfix
Bugfix	Medium	Stops sending opaque non‑Error captures to Sentry for observability Stops sending opaque non‑Error captures to Sentry for observability Source: llm_adapter@2026-07-17 Confidence: high	—
Bugfix	Medium	Preserves casing of prompt version labels in web UI Preserves casing of prompt version labels in web UI Source: llm_adapter@2026-07-17 Confidence: high	—
Bugfix	Medium	Reads v4 usage from events in prompts module Reads v4 usage from events in prompts module Source: llm_adapter@2026-07-17 Confidence: high	—
Bugfix	Medium	Captures the real error on I/O parse‑worker load failure in trace handling Captures the real error on I/O parse‑worker load failure in trace handling Source: llm_adapter@2026-07-17 Confidence: high	—

Full changelog

What's Changed

Features

feat(sfdc): add plan and lead sources to SFDC sync and prep backfill script by @Steffen911 in https://github.com/langfuse/langfuse/pull/14505
feat(web): dark mode updates - layering model by @nmtrang29 in https://github.com/langfuse/langfuse/pull/15116
feat(assistant): Make assistant quick actions context-aware and extend coverage by @LysanderKie in https://github.com/langfuse/langfuse/pull/15146
feat(monitors): deep-link alerts to the traces/observations table for the breaching window (LFE-11022) by @nkabardin in https://github.com/langfuse/langfuse/pull/15192

Fixes

fix(observability): stop sending opaque non-Error captures to Sentry (LANGFUSE-5EX cluster) by @nkabardin in https://github.com/langfuse/langfuse/pull/15175
fix(web): preserve casing of prompt version labels in UI by @CodeCLS in https://github.com/langfuse/langfuse/pull/15185
fix(prompts): read v4 usage from events by @hassiebp in https://github.com/langfuse/langfuse/pull/15184
fix(trace): capture the real error on I/O parse-worker load failure (LANGFUSE-421/41Z) by @nkabardin in https://github.com/langfuse/langfuse/pull/15173

Chores

chore(deps): bump ws to 8.21.1 by @nimarb in https://github.com/langfuse/langfuse/pull/15188

Full Changelog: https://github.com/langfuse/langfuse/compare/v3.218.0...v3.219.0

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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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