Langfuse

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

Open Source Prompt Management & Testing langfuse.com

About Langfuse

Langfuse lets teams version prompts, deploy them with labels such as production or staging, and trace how they behave in live apps. It can be self-hosted or used as a cloud service.

A popular choice for teams that want open source and data control.

FAQ

What is Langfuse?

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

Is Langfuse free?

Yes. Langfuse is open source and free to use or self-host.

What are some alternatives to Langfuse?

Agenta, Arize Phoenix, Braintrust, DeepEval, Google AI Studio.

Alternatives to Langfuse

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Agenta

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Arize Phoenix

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Braintrust

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DeepEval

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Google AI Studio

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MLflow Prompt Registry

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