Elon Musk and Sam Altman face off in a $150 billion federal trial over whether OpenAI betrayed its nonprofit founding mission, a verdict that could reshape the future of artificial intelligence.

Lawyers for Open AI and Microsoft countered that there was no evidence of a promise to maintain Open AI as a charity, and that the “sour grapes” came only after the value of Open AI soared and a jealous Mr Musk founded a lab of his own, xAI. Besides, the three-year statute of limitations had passed, they added.

Thanks to the ongoing trial pitting billionaires Elon Musk and Sam Altman against each other, it's come to light that Valve founder Gabe Newell--the third billionaire in this story--emailed Musk to ask if Hideo Kojima could get a tour of SpaceX.

By Deepa Seetharaman and Kenrick Cai OAKLAND, California, April 30 (Reuters) - Elon Musk faced tense questioning and showed frustration on the witness stand on Thursday during a second day of cross-examination by Sam Altman's lawyer in a trial over a lawsuit Musk brought accusing OpenAI of abandoning its mission to develop artificial intelligence for the benefit of humanity.