Langfuse
An open-source LLM engineering platform for tracing, evaluation, prompt management, and metrics. [#opensource](https://github.com/langfuse/langfuse)
About
An open-source LLM engineering platform for tracing, evaluation, prompt management, and metrics. #opensource Found in: steven2358/awesome-generative-ai
Details
Langfuse is an open-source LLM engineering platform that provides observability, evaluation, prompt management, and experimentation for AI agents. It enables teams to trace every LLM call, tool invocation, and retrieval step; evaluate with LLM-as-a-judge, heuristics, or human review; manage prompts with versioning and rollbacks; and run experiments on production data. Used by 19 of Fortune 50 companies and over 100,000 engineers, Langfuse supports self-hosting or cloud deployment, integrates with 100+ tools (LangChain, OpenAI, Anthropic, etc.), and scales to billions of observations per month.