Sam Altman

CEO of OpenAI, former president of Y Combinator — the most public face of the AI industry, responsible for OpenAI's commercial strategy and high-profile public communication.

Sam Altman is the CEO of OpenAI. Born in 1985 in St. Louis, dropped out of Stanford to start Loopt (acquired 2012). Joined Y Combinator as a partner, became its president in 2014, then co-founded OpenAI with Elon Musk and others in 2015. Returned full-time to OpenAI as CEO in 2019 after the for-profit restructuring. He matters because OpenAI's strategy, partnerships (especially Microsoft), and public communications largely run through him. He's done as much as anyone to shape public expectations of AI capability, ChatGPT's mass-market launch, Microsoft's $13B+ investment, and the trajectory of the LLM era. He's not a technical researcher in the way Sutskever or Hassabis are — his contribution is execution, capital, and narrative. The November 2023 board crisis at OpenAI made him briefly the most-discussed person in tech: he was fired by the board over alleged communication issues, then reinstated five days later after near-total employee revolt and Microsoft pressure. The episode exposed governance fragility at a critical AI lab. Altman is also a major investor through several vehicles, has stake in nuclear fusion (Helion), longevity (Retro Biosciences), eye-scan crypto (World / Worldcoin), and others. He's a frequent commentator on AGI timelines and consequences. Related: OpenAI, ChatGPT, AGI, Microsoft.