ClickHouse recently surpassed $350 million in annual recurring revenue, up 40% from May, as adoption of artificial intelligence agents drives demand for software that rapidly analyzes, manages and monitors large volumes of data. The company offers free open-source software and paid cloud services, and OpenAI uses its technology. ClickHouse is part of a wider group of startups challenging Snowflake, Databricks and Datadog that are benefiting from the AI-agent trend, potentially setting the stage for increased startup investment and M&A.