Langfuse: Open source LLM engineering platform for observability, prompts, and evaluations
Summary
Langfuse is an open-source LLM engineering platform offering observability, prompt management, evaluations, datasets, and a playground. It supports self-hosted deployments and integrates with popular LLM stacks (OpenAI, LangChain, LlamaIndex, Haystack) and tooling, enabling end-to-end development, monitoring, and benchmarking of AI applications.