The Endeavor CEO was enlisted to join investors who put in an unsolicited offer to buy OpenAI's majority share of its for-profit arm.

Despite having rarely left the president’s side over the preceding few months, Musk was blindsided by the announcement, according to people familiar with the matter. Musk fumed ...

Sam Altman and Elon Musk, who were once partners and are now business rivals, have been at loggerheads for the past few weeks ...

Elon Musk's unsolicited move is his latest attempt to stop the startup he co-founded with Sam Altman — but later left — from going for-profit as it seeks more funding to stay ahead in AI race ...