CEO OF THE YEAR: SAM ALTMAN

'IT IS, FOR MANY PEOPLE, THE YEAR THAT THEY STARTED TAKING AI SERIOUSLY.'

- NAINA BAJEKAL, BILLY PERRIGO, WILL HENSHALL AND JULIA ZORTHIAN

IT WAS A STRANGE THANKSGIVING FOR SAM Altman. Normally, the CEO of OpenAI flies home to St. Louis to visit family. But this time the holiday came after an existential struggle for control of a company that some believe holds the fate of humanity in its hands. Altman was weary. He went to his Napa Valley ranch for a hike, then returned to San Francisco to spend a few hours with one of the board members who had just fired and reinstated him in the span of five frantic days. He put his computer away for a few hours to cook vegetarian pasta, play loud music, and drink wine with his fiancé Oliver Mulherin. "This was a 10-out-of-10 crazy thing to live through," Altman tells TIME on Nov. 30. "So I'm still just reeling from that."

We're speaking exactly one year after OpenAI released ChatGPT, the most rapidly adopted tech product ever. The impact of the chatbot and its successor, GPT-4, was transformative-for the company and the world. "For many people," Altman says, 2023 was "the year that they started taking AI seriously." Born as a nonprofit research lab dedicated to building artificial intelligence for the benefit of humanity, OpenAI became an $80 billion rocket ship. Altman emerged as one of the most powerful and venerated executives in the world, the public face and leading prophet of a technological revolution.