Garry Tan Spends Up to $200K a Year on AI Agents as YC Deploys Stray Light
Y Combinator CEO Garry Tan spends up to $200,000 yearly on AI tokens, while YC's Stray Light agent absorbs founder, email and application data inside YC.
Summary
Y Combinator CEO Garry Tan says he spends about $100,000 to $200,000 annually on AI-agent tokens, calling the expense a privilege unavailable to most people. On November 3, 2026, Tan said in Walter Isaacson’s The Builders, whose new episode was set for Tuesday, that agents handle coding, work projects, podcast research, question preparation and daily-life management. He released gstack, 23 Claude Code skills, free on GitHub to demonstrate agent capabilities. An early OpenClaw adopter and power user, Tan has joked about experiencing “cyber psychosis” and sometimes barely sleeping because of his enthusiasm.
Tan’s personal agent has processed all his email, Dropbox and Apple Notes, including therapy notes spanning 20 years. Y Combinator’s internal agent, Stray Light, has a personality and company-wide context covering every backed founder, anyone who emailed YC and all applications, helping rebuild YC’s operations. Tan argues that treating agents like traditional software can sacrifice humanlike flexibility for repeatability and safety. He expects personal agents to become mainstream only when costs fall, but warns that free Big Tech-controlled alternatives could reproduce Meta’s algorithmic control. His preferred model is programmable personal AI controlled by its user.
Positives
- Twenty-three Claude Code skills in Tan’s gstack are freely available on GitHub to help others explore agent capabilities.
- Stray Light gives Y Combinator unified context across backed founders, incoming email and applications while reshaping internal operations.
- AI agents support Tan’s coding, research, interview preparation, work projects and daily-life management with greater autonomy.
- User-controlled, programmable personal AI could offer an alternative to agents governed by Big Tech platforms.
Risks & concerns
- $100,000 to $200,000 in annual token spending makes Tan’s level of AI-agent use unaffordable for most people.
- Twenty years of therapy notes, alongside all email, Dropbox files and Apple Notes, place highly sensitive information within one agent’s context.
- Tan’s enthusiasm has sometimes left him barely sleeping and prompted his joke that he suffers from “cyber psychosis.”
- Meta’s control over social-media algorithms illustrates Tan’s concern that free Big Tech agents could restrict user autonomy.
- Repeatability and safety can conflict with the humanlike flexibility Tan considers central to useful AI agents.