About the company
Langfuse is an open-source LLM engineering platform focused on tracing, evaluations, prompt management, and metrics for teams running LLM apps in production. The company publishes an unusually detailed public handbook covering how Langfuse works, how Langfuse hires, and how Langfuse thinks about compensation and equity. On January 16, 2026, ClickHouse announced the acquisition of Langfuse, positioning Langfuse as the open-source LLM observability layer inside ClickHouse’s broader data platform. Langfuse markets deep integrations across popular LLM tooling ecosystems and highlights large-scale community adoption.