France, Sept. 14 -- Since dropping out of Stanford University, Sam Altmanhas become one of the world's most influential tech entrepreneurs - at the helm of OpenAI and itsartificial intelligence platform ChatGPT.The author of a new biography of Altman tells RFI what his ascent reveals about AI, Silicon Valley and how tech is rewriting traditional power structures.

Keach Hagey, Wall Street Journalreporter and author of The Optimist:Sam Altman, OpenAI, and the Race to Invent the Future, spoke to RFI'sThomas Bourdeau.

RFI: How did you meet Sam Altman?

Keach Hagey: I knew of Sam Altman through his role as president of Y Combinator [a start-up incubator], but I really met him when I went to interview him for a profile in the Wall Street Jour...