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Langfuse

🪢 Open source AI engineering platform: LLM evals, observability, metrics, prompt management, playground, datasets. Integrates with OpenTelemetry, LangChain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

GitHub ↗Website ↗NOASSERTION🤖 Agent

At a glance

Is this tool relevant to you?

What it does

🪢 Open source AI engineering platform: LLM evals, observability, metrics, prompt management, playground, datasets. Integrates with OpenTelemetry, LangChain, OpenAI SDK, LiteLLM, and more. 🍊YC W23

May suit

People who want an AI system to plan or carry out multi-step tasks.

Before you try it

The repository reports a NOASSERTION license. Setup difficulty and device support still need to be checked upstream.

Evidence & freshness

What we know, and how recently we checked

Basic listing· 2026-10-04 09:17 UTC

This record comes from the wider automated directory. It has not yet passed the stronger catalog verification checks.

Source
Automated project sync
Checked
2026-10-04 09:17 UTC
Snapshot evidence level
Limited confidence
Maintenance signal
Strong84/100

Strong automated signals across recent activity, community, and project upkeep.

The health score is an automated maintenance signal, not a security audit or a guarantee that the tool fits your needs.

How verification and health scoring work

Catalog-verified records use a timestamped GitHub snapshot that passed source and completeness checks. Basic listings come from the wider automated sync and have not yet passed that stronger verification path.

Health combines recent activity, commit frequency, issue handling, contributor depth, release cadence, documentation, and community signals. Missing evidence lowers how much confidence you should place in the number.

Read the full methodology →
⭐
31.7K
Stars
🍴
3.3K
Forks
👥
194
Contributors
💚
Strong84/100
Health Score

Star History

07.9K15.8K23.7K31.7K2026/5/122026/7/22

Health Score Breakdown

Star Momentum
100
Commit Frequency
100
Issue Health
60
Contributors
100
Release Cadence
50
Documentation
50
Community Signal
100

Project Info

Language
TypeScript
License
NOASSERTION
Last Commit
2026-07-22 16:56 UTC
Last Release
v3.224.0 (2026-07-22 16:09 UTC)
Open Issues
716
Bus Factor
10
Commits/Week
93.8
Avg Issue Close
11.1 days
analyticsautogenevaluationlangchainlarge-language-modelsllama-indexllmllm-evaluationllm-observabilityllmopsmonitoringobservabilityopen-sourceopenaiplaygroundprompt-engineeringprompt-managementself-hostedycombinator

Project Badge

Embed a live health badge in a README or docs page.

Langfuse AI Tools Scout badge
[![AI Tools Scout](https://ai-tools-scout.com/api/badge/langfuse?metric=health&style=shield)](https://ai-tools-scout.com/projects/langfuse)

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