Langfuse
Open source LLM engineering platform for tracing and analytics
About
Langfuse is an open-source LLM engineering platform for tracing, prompt management, evaluation, and analytics on LLM applications. It instruments Python and JavaScript apps via an @observe decorator or SDKs and supports integrations with LangChain, LlamaIndex, OpenAI, and other providers. The hosted cloud has a free tier and the self-hosted edition runs in Docker with the same feature set, released under the MIT-style Langfuse license.
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Details
- Category
- AI Observability & Evaluation
- Price
- Freemium
- Platform
- Hybrid
- Difficulty
- Easy (2/5)
- License
- MIT
- Added
- Jan 29, 2026
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