ClickHouse
Open-source column-oriented OLAP database and cloud service for real-time analytics at petabyte scale
Software
📍 Portola Valley, CA
Founded 2021
Current Valuation
$15B
as of 2025-Q4
DECACORN
ClickHouse is the commercial company behind the popular open-source columnar OLAP database used by Cloudflare, Uber, eBay, and thousands of others for sub-second analytics at scale. Sacra estimates ~$160M ARR in 2025, up 256% YoY. Closed a $350M Series C in late 2025 led by Khosla Ventures at a reported $15B valuation - one of the largest data-infrastructure rounds of the cycle.
Company Profile
Est. Revenue
$160M (2025-FY)
Last Round
Series C — $350M (Oct 2025) · Lead: Khosla Ventures
Founders & Key People
Alexey MilovidovAaron KatzYury Izrailevsky
Investors
Khosla Ventures · Index Ventures · Lightspeed Venture Partners · Coatue · Battery Ventures
Products
- ClickHouse open-source database
- ClickHouse Cloud
- ClickPipes (managed ingestion)
- ClickStack (observability bundle)
Competitors
Snowflake · Databricks · DuckDB · StarRocks · Druid
DatabaseOLAPOpen SourceAnalyticsUnicorn
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2025-Q4. Refreshed quarterly.