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Garry Tan

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.

About

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.

Channels

Tools they advocate for

  • Claude Code4.0
    DirectCoding

    Tan open-sourced his GStack Claude Code setup on March 12, 2026, an opinionated 23-tool configuration covering CEO, Designer, Eng Manager, Release Manager, Doc Engineer and QA roles. The repo went viral, hitting nearly 20,000 GitHub stars and 2,200 forks within days. He says he's 'so excited to be working with AI agents' he sleeps four hours a night and that 'tests make vibe coding safe instead of yolo coding'. Claude Code is the most public-facing tool in his daily stack.

    Company stackMar 12, 2026
    SourceLinkedIn postMar 12, 2026
    SourceInterviewMar 17, 2026
  • Cursor4.9
    DirectCoding

    Tan has posted multiple Cursor demonstrations on X, often as part of YC W and S batch product showcases. He frames Cursor as one of the canonical IDEs the YC class uses, alongside Claude Code, with the choice between them mostly down to whether builders want inline editor or terminal-native agentic coding. His earlier posts treated Cursor as the default before his GStack/Claude Code era.

    X postSep 1, 2024
  • Claude4.7
    DirectLLM chatbot

    Tan has named Claude in YC product discussions and AI-startup commentary on X. His GStack setup is built explicitly on Claude (the underlying model behind Claude Code), and he's quoted Claude itself characterising his configuration as 'a mature, opinionated system built by someone who actually uses it heavily'. His framing positions Claude as the model layer the YC class is increasingly defaulting to.

    Company stackMar 12, 2026
  • Replit Agent3.2
    DirectCoding

    Tan posts demos of Replit Agent shipping working software from a single prompt. Replit is a YC alumnus so the coverage is recurring; he frames Replit Agent as one of the canonical AI-app-builder products demonstrating that non-engineer founders can ship product without writing custom backends.

    X postSep 15, 2024

Last researched May 10, 2026

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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. Spot a missing tool or a wrong attribution? Suggest a correction →

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