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Click House
Unicorn · $6.3BSan Francisco, US · Founded 2021 · 34 known investors
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ClickHouse develops a column-oriented database management system that enables real-time analytical reporting via SQL queries. The platform serves organizations requiring fast data analysis across large-scale, continuously growing datasets.
Also known as ClickHouse · ClickHouse B.V. · ClickHouse, Inc.
Founders & leadership
Click House was founded in 2021 by Aaron Katz, Alexey Milovidov, and Yury Izrailevsky.
Investors · 34
How we know: Coatue Management's portfolio page · the company's own site · a partner's Signal profile · the VCSheet dataset · research · en.wikipedia.org · Not right? Tell us
How we know: Index Ventures's portfolio page · the company's own site · research · clickhouse.com · research · en.wikipedia.org · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Lightspeed Venture Partners's portfolio page · the company's own site · research · clickhouse.com · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Redpoint Ventures's portfolio page · the company's own site · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: the company's own site · a partner's Signal profile · research · en.wikipedia.org · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: the company's own site · a partner's Signal profile · research · en.wikipedia.org · Not right? Tell us
How we know: the VCSheet dataset · Not right? Tell us
How we know: Artisanal Ventures's portfolio page · Not right? Tell us
How we know: Battery Ventures's portfolio page · a partner's Signal profile · research · clickhouse.com · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Bessemer Venture Partners's portfolio page · a partner's Signal profile · the VCSheet dataset · research · clickhouse.com · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: a partner's Signal profile · bondcap.com · research · clickhouse.com · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: FirstMark Capital's portfolio page · a partner's Signal profile · the VCSheet dataset · research · clickhouse.com · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Founders Circle Capital's portfolio page · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Geodesic Capital's portfolio page · the VCSheet dataset · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
How we know: IVP (Institutional Venture Partners)'s portfolio page · a partner's Signal profile · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Khosla Ventures's portfolio page · the VCSheet dataset · research · clickhouse.com · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
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How we know: a partner's Signal profile · research · clickhouse.com · Not right? Tell us
How we know: a partner's Signal profile · Not right? Tell us
How we know: open dataset · 5k.vc investor directory · Not right? Tell us
How we know: research · clickhouse.com · Not right? Tell us
Also in the syndicate · 5
Valuation · disclosed
Disclosed eventsSource: SEC prospectus filings, and round valuations the company or its investors disclosed — follow each entry's link for the claim.
Company profile
researched Aug 2026ClickHouse builds a column-oriented online analytical processing (OLAP) database management system that executes SQL queries over large, continuously growing datasets. The company positions the technology across four principal workload categories: real-time analytics and dashboards over billions of rows, observability (logs, metrics and traces via ClickStack, an open-source observability stack built on ClickHouse), data warehousing, and machine learning/GenAI workloads involving vector search and large-scale aggregations. According to the company, column-oriented storage suits OLAP scenarios and processes most queries at least 100x faster than row-oriented storage, with performance derived from compression, vectorized query execution and full use of available system resources.
The product is available in three deployment forms: ClickHouse Cloud, a fully managed service on AWS, GCP and Azure and their marketplaces; self-managed open-source ClickHouse server; and ClickHouse Local, a serverless mode for querying local files such as CSV, TSV and Parquet. The company states more than 100 integrations for ingestion, visualization and language clients. In January 2026 ClickHouse expanded beyond analytics by acquiring Langfuse, an open-source LLM observability, evaluation and prompt-management platform, and by launching a public-beta enterprise-grade managed Postgres service built in partnership with Ubicloud, with NVMe storage, native change-data-capture into ClickHouse and a unified query layer via a native Postgres extension.
Business model
Open-core: the ClickHouse database is distributed as free open-source software, while revenue is generated from ClickHouse Cloud, a fully managed subscription service sold directly and through the AWS, GCP and Azure marketplaces. Self-managed users bear their own compute, storage and operational headcount costs.
Consumption/subscription pricing for ClickHouse Cloud, which the company states starts at $50 per month; new users receive a free trial and $300 in credits. Open-source ClickHouse and ClickHouse Local are free.
Traction
More than 3,000 customers on ClickHouse Cloud with ARR growing more than 250% year over year as of January 2026. The open-source community is cited at over 100,000 developers, 3,100+ contributors, 84,000+ pull requests, 830+ releases and 49,400+ GitHub stars. Recent customer adoptions or expansions include Capital One, Lovable, Decagon, Polymarket and Airwallex.
Latest developments
On January 16, 2026 ClickHouse announced a $400 million Series D 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. Concurrently it announced the acquisition of Langfuse, whose entire team joins ClickHouse and whose product remains open source and self-hostable with unchanged licensing, cloud service and support; Langfuse ended 2025 with over 20,000 GitHub stars and more than 26 million SDK installs per month. ClickHouse also introduced ClickHouse Managed Postgres in public beta, built with Ubicloud, claiming up to 10x faster Postgres and up to 100x faster analytics on synced data.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Positioned as a leading real-time analytics and open-source OLAP database provider, competing in the modern data stack against data warehouses and other analytical databases; an investor in the Series D characterized it as a category-defining leader in the modern data stack. The company emphasizes enabling net-new, embedded customer-facing workloads rather than only replacing existing internal analytics systems.
Query speed and resource efficiency relative to traditional data warehouses and databases, best-in-class compression ratios, SQL accessibility, open-source licensing and self-hosting, deployment portability across local machines and multiple clouds, and use as a "speed layer" atop existing cloud data warehouses or OLTP databases.
Technology
Column-oriented DBMS optimized for OLAP, using highly optimized compression techniques and vectorized query execution to maximize CPU efficiency; the company cites processing of hundreds of millions to over a billion rows and tens of gigabytes of data per server per second. Related components include ClickStack for observability and ClickHouse Local for querying local files. The new Postgres offering uses NVMe-backed storage, native CDC into ClickHouse, and a native Postgres extension providing a unified query layer.
Go-to-market
Developer-led adoption of the open-source project and community (meetups, GitHub, documentation, playground) converting into self-serve free cloud trials and enterprise sales via a contact-sales motion; cloud marketplaces on AWS, GCP and Azure serve as an additional distribution channel. Partnerships such as the Ubicloud-built Postgres service extend the product surface.
Organizations running large-scale, latency-sensitive analytical workloads, including AI application builders, observability teams, product engineering teams embedding analytics in customer-facing applications, and enterprises in media, financial services, gaming, e-commerce, marketing, and fraud/cybersecurity. Named users include Anthropic, Tesla, Lyft, Sony, Cisco, GitLab, Meta, Cursor, Capital One, Lovable, Decagon, Polymarket and Airwallex.
Geography
Headquartered in San Francisco / Bay Area, United States, with a presence in Amsterdam, the Netherlands; community activity includes meetups in Berlin, San Francisco and Amsterdam. ClickHouse Cloud is offered on AWS, GCP and Azure.
History
The company commercializes the ClickHouse column-oriented OLAP database. In January 2026 it closed a $400 million Series D, acquired the open-source LLM observability company Langfuse (founded by Marc Klingen, Clemens Rawert and Max Deichmann, which went through Y Combinator in early 2023 and migrated its data layer from Postgres to ClickHouse with Langfuse v3), and announced a managed Postgres service.
Risks & controversies
A third-party M&A aggregator published a January 20, 2026 item stating that ClickHouse was "acquired by Unknown" for $400 million; the amount matches the company's announced Series D financing, and no acquirer is identified, so the report appears unreliable and conflicts with the company's own announcement.
Compiled by commissioned research from 11 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Founder mafia
The Click House mafia →10 people who came through Click House went on to found or lead other companies.
Related companies · 8
Companies working in the same space as Click House.
Acquisitions · 3
Early investors' stakes continue via these dealsHyperDX provides distributed tracing and observability software for developers, enabling end-to-end request tracing from browsers and phones to backend servers. The platform uses ClickHouse for fast search across event data and includes features for session replay correlation, log aggregation, and metrics visualization.
Langfuse is an open-source AI engineering platform that helps teams build and monitor production-grade LLM applications. It provides observability and analytics for teams building with large language models and generative AI.
PeerDB provides fast and cost-effective data replication from PostgreSQL to data warehouses including Snowflake, BigQuery, and ClickHouse, as well as to event queues like Kafka and EventHubs. The open-source tool and commercial cloud service enable change data capture and parallel data migration for engineering and data teams.
Timeline · 20
launches, deals, and filingsStable release of the open-source database published on GitHub.
ClickHouse acquired Langfuse, an open-source LLM observability, evaluation and prompt-management platform, entering the LLM observability market. The full Langfuse team joins ClickHouse; Langfuse remains open source and self-hostable with no planned licensing changes and Langfuse Cloud continues to operate.
ClickHouse announced the close of a $400 million Series D financing 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.
$400M source ↗
The ClickHouse Postgres service is built in partnership with Ubicloud, an open-source cloud company delivering high-performance Postgres.
ClickHouse announced an enterprise-grade managed Postgres service in public beta, built in partnership with Ubicloud, featuring NVMe-backed storage, native CDC into ClickHouse and a unified query layer via a native Postgres extension.
Series D financing 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.
$400M source ↗
ClickHouse's Postgres service is built in partnership with Ubicloud, an open-source cloud company delivering high-performance Postgres.
An enterprise-grade Postgres service integrated with ClickHouse, backed by NVMe storage with native CDC and a unified query layer, built in partnership with Ubicloud; available in public beta.
ClickHouse acquired Langfuse, an open-source LLM observability, evaluation and prompt management platform, announced alongside the Series D round.
LibreChat, an open-source unified chat interface for large language models, became part of ClickHouse's open-source "Agentic Data Stack".
Announced at ClickHouse's inaugural user conference; the round valued the company at approximately $6.35 billion and brought total funding to more than $650 million. ClickHouse also secured a $100 million credit facility led by Stifel and Goldman Sachs.
$350M source ↗
HyperDX, an open-source observability platform built on ClickHouse, became the primary UI for ClickStack.
PeerDB provides change data capture technology replicating data from PostgreSQL into ClickHouse; it is offered as a hosted service via ClickPipes.
chDB is an in-process OLAP SQL engine embedding the ClickHouse engine as a library so analytical queries can run inside a host application.
ClickHouse launched its fully managed ClickHouse Cloud service and extended its Series B.
Arctype's SQL client was integrated into ClickHouse Cloud as a web-based interface that formed the basis for the Cloud Console.
ClickHouse announced a $250 million Series B round at a $2 billion valuation, led by Coatue Management and Altimeter Capital, among others.
$250M source ↗
ClickHouse, Inc. was incorporated in San Francisco, California to commercialize the open-source ClickHouse database.
The ClickHouse column-oriented DBMS, developed at Yandex and in production since 2012 for Yandex.Metrica, was released publicly under the Apache License 2.0.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 11
primary sources listed
- Click Houseclickhouse.com · web
- ClickHouseclickhouse.tech · web
11 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Click House do?
- ClickHouse develops an open-source column-oriented OLAP database and a managed cloud service for real-time analytics.
- Who founded Click House?
- Click House was founded by Aaron Katz, Alexey Milovidov, Yury Izrailevsky in 2021.
- Who are Click House's investors?
- Click House's investors include Coatue Management, Index Ventures, Lightspeed Venture Partners, Redpoint Ventures, Altimeter Capital, Benchmark, 515 Ventures, Adapt Ventures and 21 more.
- Where is Click House headquartered?
- Click House is headquartered in San Francisco, US.