Langfuse
Langfuse is an open-source LLM engineering platform for tracing, prompt management, evaluation and metrics, now part of ClickHouse.
About
Langfuse provides MIT-licensed tooling for developing LLM applications. It covers hierarchical tracing of model calls, prompt management with deployments and rollbacks, evaluation through LLM-as-a-judge, heuristics and human annotation, and dashboards for cost, latency and quality. A playground and experiments feature let teams test models on production inputs. The site notes the company has joined ClickHouse and operates in Europe and San Francisco.
- Organization type
- ai company
- Headquarters region
- Berlin
- Founded
- Not stated
- Listings in the graph
- 0
- Last updated
- 6 October 2026
- Published
- 6 October 2026
Data sources & provenance
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- Data quality
- Data quality: Editorially Reviewed
- Primary source
- langfuse.com
- Sources cited
- 2
- Last reviewed
- 6 October 2026
- Last updated
- 6 October 2026
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