ClickHouse has announced it has raised $400 million in a Series D financing round led by Dragoneer Investment Group, with participation from Bessemer Venture Partners, GIC, Index Ventures, Khosla Ventures, Lightspeed Venture Partners, accounts advised by T. Rowe Price Associates, and WCM Investment Management. The funding follows rapid growth for the company, with more than 3,000 customers now using ClickHouse Cloud and annual recurring revenue increasing over 250% year over year.
Recent adopters and expanded customers include Capital One, Polymarket, Airwallex, and Decagon, alongside an existing base that includes Meta, Sony, Tesla, and Cursor. Aaron Katz, CEO of ClickHouse, said, “This momentum validates our focus on performance and cost efficiency for the most demanding data workloads,” adding that the company is expanding into unified transactional and analytical workloads and LLM observability.
Alongside the financing, ClickHouse announced the acquisition of Langfuse, an open-source LLM observability platform. The company also introduced an enterprise-grade Postgres service integrated with ClickHouse to support AI applications that require both transactions and real-time analytics. Christian Jensen, Partner at Dragoneer, said, “As models become more capable, the bottleneck moves to data infrastructure, and ClickHouse delivers the performance and reliability required at scale.” Marc Klingen, CEO of Langfuse, added, “LLM observability is fundamentally a data problem, and together we can deliver faster insight from production issues to measurable improvement.”