— January 16, 2026 — Leads & Copy — ClickHouse, a real-time analytics, data warehousing, observability, and AI/ML leader, has secured $400 million in Series D financing. Dragoneer Investment Group led the round, with 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.
The funding follows a period of sustained growth for ClickHouse, which now serves over 3,000 customers on its fully managed service, ClickHouse Cloud. The company reports its annual recurring revenue (ARR) has grown by more than 250 percent year-over-year. Recent adopters and expansion deployments include Capital One, Lovable, Decagon, Polymarket, and Airwallex, joining existing customers such as Meta, Cursor, Sony, and Tesla.
Aaron Katz, CEO of ClickHouse, stated the funding will support the company’s expansion of its offering to include LLM observability, so AI application builders can evaluate the quality and behavior of AI outputs as they move into production, and adding support for unified transactional and analytical workloads, so developers can build any type of applications powered by AI on the best technical foundation.
Founded in 2012, Dragoneer takes a highly selective, research-driven approach and seeks long-term partnerships with a small number of category-defining companies. Christian Jensen, Partner at Dragoneer Investment Group, noted that ClickHouse delivers the performance, efficiency, and reliability required for AI systems operating at scale.
ClickHouse also announced the acquisition of Langfuse, an open-source LLM observability platform. LLM observability focuses on ensuring that AI systems produce outputs that are accurate, safe, and aligned with user intent. Langfuse CEO Marc Klingen said that as one team, they can deliver a tighter end-to-end product: faster ingestion, deeper evaluation, and a shorter path from a production issue to a measurable improvement.
Additionally, ClickHouse announced an enterprise-grade Postgres service deeply integrated with ClickHouse. According to Umur Cubukcu, Co-CEO, Co-Founder, Ubicloud, ClickHouse and Postgres complement each other naturally, and are key for AI applications. Together, they’re delivering an integrated stack that removes complexity for teams, with production-grade Postgres for transactions and ClickHouse for analytics working as one.
In the past year, ClickHouse has entered the Japanese market through a partnership with Japan Cloud and announced a partnership with Microsoft Azure focused on OneLake. Recent product advancements include investments in data lake support, expanded full-text search capabilities, and the introduction of lightweight updates.
About Langfuse
Langfuse is an open-source platform for building, testing, and monitoring LLM applications/agents. Teams use Langfuse to trace and debug agent workflows, run evaluations, and continuously measure and improve the quality of AI outputs in production. Langfuse is available as a managed cloud service and can be self-hosted at production scale. Langfuse is one of the fastest growing LLM engineering platforms, with 20,470 GitHub stars, 26M+ SDK installs per month, and 6M+ Docker pulls, and is trusted by 19 of the Fortune 50 and 63 of the Fortune 500 companies.
About Ubicloud
Ubicloud is building the open-source AWS, delivering core cloud services across bare metal and public clouds. Founded by the team that built distributed PostgreSQL with Citus Data (acquired by Microsoft), Ubicloud’s flagship database offering, Ubicloud PostgreSQL provides an enterprise-grade managed Postgres experience with industry-leading price-performance. Ubicloud services across AI, Compute, PostgreSQL, and Kubernetes power more than 1 million VMs every week, cutting cloud costs by up to 70%. Ubicloud is backed by Y Combinator and other prominent Silicon Valley investors.
Contact:
Aaron Katz, CEO
Email: Not Specified
Telephone: Not Specified
Source: ClickHouse
