Sam Altman

Sam Altman became one of tech's most influential figures after navigating a dramatic board coup in November 2023—fired and rehired within five days—and then restructuring OpenAI into a $157 billion for-profit entity. A former Y Combinator president, Altman's vision of artificial general intelligence as a near-term reality shapes global AI policy. His $157B valuation is nearly half of Satya Nadella's Microsoft market cap increase, but achieved in just a few years, underscoring the breakneck pace of AI's commercial impact under his leadership.