Lawyers for Elon Musk and OpenAI made their closing arguments in the blockbuster federal trial on Thursday. Nine jurors are set to begin deliberations next week.

World's richest man Elon Musk and OpenAI CEO Sam Altman have been putting up their legal dukes for weeks now (1), since April 27. At the core of the feud is Musk's belief that he's entitled (2) to a large portion of OpenAI's eye-watering valuation,

His Times colleague, Kevin Roose, said “the jackass trophy is lore among early OpenAI employees, not just because of how funny it is but because the guy who gave it to Josh — a safety exec named Dario — went on to do some other stuff in AI.”

As the trial nears end, Elon Musk’s attorney blames Altman of manipulating him into giving $38 million as well as going behind his back by attaching a for-profit business to its original nonprofit plan.

Elon Musk flew to China with Trump despite OpenAI trial judge’s recall warning - ‘A typical witness would not leave the country if they were subject to recall,’ a legal expert said

Microsoft CTO Kevin Scott publicly addressed for the first time a 2018 email that Musk's lawyers have cited as evidence Microsoft knew OpenAI was abandoning its nonprofit mission. A confidential board memo filed in the case reveals how Microsoft's fear of falling behind Google drove the investment.

Musk sued OpenAI, Altman and the company's president, Greg Brockman, in 2024, alleging they went back on their vow to keep the artificial intelligence company a nonprofit and follow its charitable mission. He argued that the roughly $38 million he donated to OpenAI was used for unauthorized commercial purposes.

WSJ's Angel Au-Yeung has been reporting from the courthouse where OpenAI CEO Sam Altman took the stand Tuesday in the megatrial between him and billionaire Elon Musk.