Elon Musk took the stand for a third day in his lawsuit against OpenAI and its co-founders, Sam Altman and Greg Brockman, offering extended testimony Thursday as he seeks to halt its conversion to a f...

Elon Musk took the stand for the second day Wednesday in the landmark trial that pits the world’s richest person against Sam Altman, a fellow OpenAI co-founder he accuses of betraying promises to keep...

Because the Silicon Valley moguls Elon Musk and Sam Altman often appear in court, people line up outside the building before the sun comes up.