Sam Altman faced pointed questions about his financial ties to the Everett, Wash., fusion startup during testimony in the ...

Sam Altman, OpenAI’s chief executive, is defending the company against Elon Musk’s allegations that the start-up betrayed its founding mission. Mr. Musk’s lawyer has assailed Mr. Altman as ...

Satya Nadella testified for roughly two and a half hours in the Musk v.

We knew Elon Musk's lawsuit against OpenAI's co-founders would cause fireworks when it came to trial. When Sam Altman took ...

The trial pits two of tech's most famous personalities against each other and could lead to seismic changes for the maker of ...