---
title: "Langfuse"
pageType: "tool-profile"
schemaVersion: "1.0"
snapshotId: "tv-20260915-f4c107995a2e"
generatedAt: "2026-09-15T07:02:20.000Z"
canonicalUrl: "https://toolvitals.com/tools/langfuse/"
jsonUrl: "https://toolvitals.com/api/agent/tools/langfuse"
indexable: true
---

# 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

## Decision context

- Status: active
- ToolVitals score: 98/100
- Health score: 98/100
- Shipping score: 98/100
- Score mode: verdict
- Data confidence: 90/100
- Source coverage: 100/100
- Last evidence check: 2026-09-14

## Classification

- Use case: Observability (observability)
- Category: Monitoring (monitoring)
- Tool mode: Source-visible project
- Openness: OSI-approved OSS
- License: MIT
- Tags: open-source, analytics, autogen, evaluation, langchain, large-language-models, llama-index, llm, llm-evaluation, llm-observability, llmops, monitoring, observability, openai, playground, prompt-engineering

## Public repository signals

- Repository: [langfuse/langfuse](https://github.com/langfuse/langfuse)
- Stars: 34532 (adoption context only)
- Forks: 3762
- Open issues: 923
- Last commit date: 2026-09-14
- Releases in 90 days: 30

## Source receipts

- [Official website](https://langfuse.com/) — checked 2026-09-14
- [Source repository](https://github.com/langfuse/langfuse) — checked 2026-09-14

## Discovery status

- Search indexable: yes
- Reason: sufficient tool evidence

## Interpretation limits

- ToolVitals scores summarize bounded public maintenance, shipping, openness, and evidence signals. They are not user-review ratings.
- GitHub stars and related popularity metrics are adoption context, not quality evidence.
- Missing values mean not collected or not confidently established; they do not mean zero.
- Public signals do not prove security, uptime, support quality, customer satisfaction, or production suitability.
- Verify material decisions against the linked first-party sources and your own requirements.