Langfuse
acquired by ClickHouseYC W23 ↗Berlin, DE · Founded 2022 · 19 employees · 4 known investors
Langfuse is an open-source AI engineering platform that helps teams build and monitor production-grade LLM applications. It provides observability and analytics for teams building with large language models and generative AI.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareGenerative AIAnalyticsOpen SourceAIin /langfuse@langfuseycombinator.com ↗
Founders & leadership· Y Combinator alumni (W23)
Investors · 4
In the news
- ClickHouse raises $400M Series D led by Dragoneer to accelerate expansion across analytics and AI infrastructure | ClickHouseclickhouse.com · 2026
- Callspherecallsphere.ai · 2026
- Database maker ClickHouse raises $400M, acquires AI observability startup Langfuse - SiliconANGLEsiliconangle.com · 2026
- ClickHouse welcomes Langfuse: The future of open-source LLM observabilityclickhouse.com · 2026
- 🪢 Langfuse - The Open-Source LLM Engineering Platformycombinator.com · 2025
- How Langfuse pivoted and raised $4M after leaving Y Combinator - PostHogposthog.com · 2024
- Langfuse raised $4M - Langfuse Bloglangfuse.com · 2023
- Our favorite startups from YC's Summer 2023 Demo Day, Day 1 | TechCrunchtechcrunch.com · 2023
