09 Sam Altman

CEO

OpenAI

US $ 3.7BN Artificial Intelligence

Sam became OpenAI ’ s CEO in 2019 , leading the company through the launch of ChatGPT and GPT-4 . Born in Chicago and educated at Stanford before dropping out , he previously served as president of Y Combinator . Under his leadership , OpenAI developed from a research lab to a commercial entity , secured a multibillion-dollar investment from Microsoft , and briefly departed the company in November 2023 before returning with a restructured board and renewed focus on AI safety governance .

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