LF

Langfuse

Backed byY Combinator
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Observability, evals, prompt management, and tracing for LLM apps. The default tool for teams shipping production AI.

Location
Berlin, Germany
Founded
2022
Category
Open Source
Funding
Acquired

Sources, checked Sep 26, 2026. A fact that is missing is one we could not source, not a zero.

Category is our own classification. Spotted something wrong? Tell us.

Founders of Langfuse

  • Marc Klingen
  • Maximilian Deichmann
  • Clemens Rawert

Investors backing Langfuse

  • Y Combinator

Frequently asked questions

What does Langfuse do?

Observability, evals, prompt management, and tracing for LLM apps. The default tool for teams shipping production AI.

Where is Langfuse based?

Langfuse is based in Berlin, Germany.

When was Langfuse founded?

Langfuse was founded in 2022.

How much has Langfuse raised?

Langfuse is acquired. We have not verified a funding amount.

Who founded Langfuse?

Langfuse was founded by Marc Klingen, Maximilian Deichmann, Clemens Rawert.

Who has invested in Langfuse?

Langfuse is backed by Y Combinator.

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