ClickHouse, a prominent player in real-time analytics, data warehousing, observability, and AI/ML, has successfully closed its Series D funding round, raising an impressive $400 million. The round was led by Dragoneer Investment Group, with strong participation from Bessemer Venture Partners, GIC, Index Ventures, Khosla Ventures, Lightspeed Venture Partners, accounts advised by T. Rowe Price Associates, Inc., and WCM Investment Management. This major investment marks a significant milestone as the company continues to scale its role in the modern data and AI ecosystem.
Notably, the funding follows a period of rapid and sustained growth for ClickHouse. The company now supports more than 3,000 customers on its fully managed ClickHouse Cloud platform, while its annual recurring revenue has surged by over 250 percent year-over-year. In recent months, organizations such as Capital One, Lovable, Decagon, Polymarket, and Airwallex have either adopted the platform or expanded existing deployments. At the same time, these customers join a growing list of established brands, including Meta, Cursor, Sony, and Tesla.
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“ClickHouse was built to deliver exceptional performance and cost-efficiency for the most demanding data workloads, and this momentum validates that strategy,” said Aaron Katz, CEO of ClickHouse. “As we look to the future, we’re adding support for unified transactional and analytical workloads, enabling developers to build any type of AI-powered application on best-in-class technical architecture. And we’re expanding our offerings with LLM observability, enabling AI application developers to evaluate the quality and behavior of AI output as it moves into production. Additional funding, combined with continued product execution, positions us to deliver the best data and LLM observability platform for the AI era.”
Meanwhile, Dragoneer’s investment underscores growing confidence in scalable data infrastructure as AI systems transition from experimentation to full production. As AI-driven applications demand higher query volumes, lower latency, and continuous evaluation, infrastructure platforms capable of handling real-time, data-intensive workloads are becoming increasingly valuable.
“Major platform shifts ultimately reward the infrastructure companies closest to production,” said Christian Jensen, Partner at Dragoneer Investment Group. “As models become more sophisticated, the bottleneck shifts to data infrastructure. ClickHouse excelled because it delivered the performance, efficiency, and reliability required to operate AI systems at scale.”
In addition to funding momentum, ClickHouse has expanded its product portfolio through the acquisition of Langfuse, an open-source LLM observability platform. This move allows ClickHouse to address a critical need in AI production environments ensuring AI outputs remain accurate, safe, and aligned with user intent.
“We built Langfuse on ClickHouse because LLM observability is fundamentally a data problem,” said Marc Klingen, CEO of Langfuse. “Now, as one team, we can deliver a seamless end-to-end product: faster ingestion, more thorough evaluation, and a shorter path from a production issue to a measurable improvement.”
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Furthermore, ClickHouse has announced a native, enterprise-grade Postgres service designed to unify transactional and analytical workloads for AI builders. Developed in partnership with Ubicloud, the service enables seamless synchronization between Postgres and ClickHouse, dramatically accelerating analytics performance.
“Postgres and ClickHouse are naturally complementary and essential for AI applications. Together, we deliver an integrated stack that removes complexity for teams, with production-grade Postgres for transactions and ClickHouse for analytics working together as one,” said Umur Cubukcu, co-CEO and co-founder of Ubicloud. “We’re excited to join forces with ClickHouse at Ubicloud because this is how the open-source ecosystem wins: trusted teams building industry-leading products that collaborate and grow together.”
Alongside these developments, ClickHouse continues to expand globally through new partnerships, regional market entries, and community events. With fresh capital, strategic acquisitions, and ongoing product innovation, the company is well-positioned to strengthen its leadership as a unified data and AI observability platform.
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