Open-source observability platform for LLM applications (performance and costs).
| Date | Round | Amount |
|---|---|---|
| Jan 2026 | Acquired by ClickHouse US-based ClickHouse acquires Berlin-based Langfuse, an observability startup for AI applications; terms not disclosed. | — |
| Nov 2023 | Seed Berlin LLM-observability startup Langfuse raised USD 4M from Lightspeed Venture Partners, La Famiglia and Y Combinator. | $4M |
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