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Langfuse

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Langfuse

Traces, prompts, and evals for LLM apps.

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Project.

License: MIT
Platforms: Linux, Web, Docker
Docker: Yes
Commercial use: Allowed
Stars: 16k
Language: TypeScript
Last commit: Sep 5, 2026
Latest release: Aug 26, 2026
Tags: observabilitypromptsevals

MIT core. Cloud is optional.

About.

Langfuse is observability for generations. Self-host with Docker. Pair it with whatever model you already call.

traces · sessions · datasets · scores

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