garry tanGarry Tan is the CEO of Y Combinator. He founded Posterous (YC 2008, acquired by Twitter for ~$20M) and later rebuilt it as Posthaven. He co-founded Initialized Capital (now run by Brett Gibson). After a 13-year coding hiatus, he returned to building using AI coding agents (Claude Code, Codex, OpenClaude), shipping hundreds of thousands of lines of code while running YC full-time. He built Garry's List (political advocacy platform), G Stack (agentic engineering framework), and G Brain (open-source personal AI).