ClickHouse Acquires Langfuse

Summary

2026/01/16Langfuse joins ClickHouseOur goal continues to be building the best LLM engineering platform ClickHouse has acquired Langfuse. If you’re reading this as a Langfuse user, your first question is probably: What does this mean for me? Our roadmap stays the same, our goal continues to be building the best LLM engineering platform, and we remain committed to open source and self-hosting. There are no immediate changes to how you use Langfuse and how you can reach out to us. What does change is our ability to move faster. With ClickHouse behind us, we can invest more deeply into performance, reliability, and our roadmap that helps teams build and improve AI applications in production. What stays the same This is the section we would want to read first, too. Langfuse stays open source and self‑hostable. There are no planned changes to licensing. As you know, we leaned heavily into OSS over the last years. Langfuse Cloud keeps running as‑is. Same product, same endpoints, same experience. Support stays the same. Same channels, same SLAs for existing customers. What gets better now Joining Clickhouse compresses years of operational learning into immediate, real customer benefits. More engineering leverage on the hardest parts. Langfuse is a data‑intensive product. Working closely with the ClickHouse engineering team helps us push performance and reliability. Faster progress on enhanced enterprise-grade compliance and security, with the help of Clickhouse’s resources. Learning from Clickhouse’s customer success and support playbook. This puts us years ahead and allows us to spend more time on what we really care about: our users. A quick look back Langfuse started the same way many LLM products start: we were building agents ourselves. And we constantly ran into the same problems. Building LLM apps is easy to demo and hard to run in production. Debugging is different, quality is non‑deterministic, and the iteration loop is messy. When we did Y Combinator in early 2023...