langfuse

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

github AI Tools TypeScript free
★ 26,185Stars
2,648Forks
26,185Watchers
16Views
Apr 2026Last Update

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

What you should know about langfuse

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. It is categorized under AI Tools and primarily built with TypeScript. The project has gathered 26,185 stars and 2,648 forks on GitHub, indicating strong adoption among developers.

Pricing & licensing: This tool is offered free of charge , released under the Unknown license. The source code is openly available on GitHub, allowing engineers to audit, contribute, or fork as needed.

Use cases & topics: langfuse is associated with the following topics: analytics, autogen, evaluation, langchain, large-language-models, llama-index, llm, llm-evaluation. Teams working in analytics / autogen / evaluation spaces typically evaluate this kind of tool when scoping new architecture decisions or replacing legacy components.

Getting started: Check out the official GitHub repository for installation steps, configuration examples, and the latest release notes. Most teams hit value within the first week if the tool aligns with their existing AI Tools stack.

Editor's note from Fanny Engriana (Founder, Wardigi Digital Agency): when evaluating tools in the AI Tools category for our agency clients, we look at three things first — license clarity, community size, and active maintenance. Tools with explicit license terms and ongoing commits tend to remain viable across multi-year projects.

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