# ClickHouse

> ClickHouse is the open-source columnar database engineered for real-time analytics on petabyte-scale data. Born inside Yandex in 2009 and spun out as ClickHouse, Inc. in 2021, it now powers analytics for Anthropic, Tesla, Sony, Meta, Lyft, and roughly 3,000 other paying customers as a managed cloud service.

- **Founded:** 2021
- **Headquarters:** Portola Valley, California, United States
- **Founders:** Aaron Katz (Co-founder & CEO), Alexey Milovidov (Co-founder & CTO), Yury Izrailevsky (Co-founder, President of Product & Engineering)
- **Team size:** ~570 employees
- **Products:** ClickHouse (open source), ClickHouse Cloud, ChDB, HyperDX
- **Notable:** Open-sourced under Apache 2.0 in 2016 from Yandex.Metrica, Over 38,000 GitHub stars; one of the most active database OSS projects, Reached ~$160M ARR in 2025, up 256% year-over-year

## Products & services

- **ClickHouse (open source)** — Open-source columnar OLAP database released under Apache 2.0. Built for sub-second analytical queries over petabyte-scale datasets.
- **ClickHouse Cloud** — Fully managed, serverless ClickHouse service on AWS, GCP, and Azure with autoscaling compute, separation of storage and compute, and BYOC options.
- **ChDB** — Embedded in-process ClickHouse for Python, allowing analytical queries directly inside notebooks and scripts.
- **HyperDX** — Open-source observability platform acquired in 2025, bringing logs, traces, and metrics on top of ClickHouse.

## Achievements

- Open-sourced under Apache 2.0 in 2016 from Yandex.Metrica
- Over 38,000 GitHub stars; one of the most active database OSS projects
- Reached ~$160M ARR in 2025, up 256% year-over-year
- Crossed 3,000 paying customers by January 2026
- Reached $15B valuation in Series D (Jan 2026)

## Latest updates

- **2026-01** — Closed $400M Series D led by Dragoneer at a ~$15B valuation.
- **2025-05** — Raised $350M Series C led by Khosla Ventures at $6.35B.
- **2025-03** — Acquired HyperDX to extend into observability.
- **2024-11** — Crossed 1,000 paying ClickHouse Cloud customers.

## Links

- Website: https://clickhouse.com
- LinkedIn: https://www.linkedin.com/company/clickhouseinc
- Twitter/X: https://twitter.com/ClickHouseDB
- GitHub: https://github.com/ClickHouse/ClickHouse
- YouTube: https://www.youtube.com/@ClickHouseDB
- Facebook: https://facebook.com/clickhouseinc/

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Profile page: https://yespress.io/clickhouse
Published by YesPress — https://yespress.io
Last updated: 2026-05-29