Tan has posted multiple Cursor demonstrations on X, frequently as part of YC W and S batch product showcases. Talks about it as the IDE the YC class uses.
Person profile

Garry Tan's AI stack.
President & CEO at Y Combinator.
Tools Garry Tan has publicly discussed or demonstrated using. Curated by Magpie's editorial team from podcasts, posts, and public stacks.
Garry Tan is President and CEO of Y Combinator. Posts AI tool demos and YC startup picks on X regularly. Previously founded Posterous and Initialized Capital.
Tools Garry has publicly discussed.
- Cursor4.9DirectCoding
- Claude4.7DirectLLM chatbot
Has named Claude in YC product discussions and AI-startup commentary on X.
- ChatGPT4.9DirectLLM chatbot
ChatGPT recurs in Tan's commentary on AI startups and what early founders should learn. He's also discussed using it personally.
- Replit Agent3.2DirectCoding
Posted demos of Replit Agent shipping working software from a single prompt. Replit is a YC company so the coverage is recurring.
Evidence tiers
Direct: a video, podcast, post, or essay where Garry names the tool. Implied: their company's public stack, repeated adjacency, or job ads. We don't list guesses. See how Magpie scores tools.
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These tools have been mentioned by the people featured in podcasts, interviews, posts, and other public media. Source links and citations are included wherever possible. Magpie AI has no direct relationship with the people on these pages. This is editorial coverage, not an endorsement, sponsorship, or affiliation. Spot a missing tool or a wrong attribution? Suggest a correction →
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