Summary
In this wide-ranging interview on the 20VC podcast with Harry Stebbings, ClickHouse CEO and co-founder Aaron Kass discusses the company’s rapid growth from zero to over $350 million in ARR — with ambitions to cross $500 million by year-end and reach $1 billion by December 2027. Kass, who spent 12 years at Salesforce and held a senior role at Elastic before founding ClickHouse, offers an insider’s view on what separates durable AI businesses from fragile ones.
A central theme is revenue durability and switching costs. Kass argues that while infrastructure software like ClickHouse benefits from deep integration and high switching costs, many AI application-layer companies face a more precarious dynamic: model providers leapfrog each other so rapidly that customers may shift allegiance with little friction. He singles out revenue concentration as the single biggest risk he’d flag for investors evaluating AI names today.
The conversation also covers enterprise AI adoption (which Kass says is accelerating faster than any prior tech cycle he has witnessed), the return to on-premises deployments even among Silicon Valley digital-native firms, the security debate around Chinese open-weight models, and whether AI gross margins — currently well below traditional SaaS levels — will expand over time. ClickHouse is used by Anthropic, OpenAI, and Weights & Biases, giving Kass a unique vantage point on the infrastructure demands of the largest AI-native companies.
📺 Source: 20VC with Harry Stebbings · Published August 31, 2026
🏷️ Format: Interview
