EvalsOpen source

Langfuse

Open-source LLM engineering platform for tracing, evals, and prompt management.

About the tool

Open-source LLM engineering platform for tracing, evals, and prompt management.

Langfuse combines tracing, evaluations, prompt management, datasets, and metrics in a single self-hostable platform. It integrates with OpenTelemetry, LangChain, the OpenAI SDK, and LiteLLM, and offers managed cloud deployments in multiple regions alongside the MIT-licensed core.

Pricing: Open source
Category: Evals
Maker: Not publicly supplied
Provenance: Indexed by PageVerified from public information

For the maker

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Feature for 7 days · $39 Feature for 30 days · $99

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