Elon Musk made repeated references to an AI "Terminator" scenario while testifying before a California federal jury about OpenAI's for-profit move.

Elon Musk seems tired and cranky. On Thursday, he took the stand for the third day in a four-week trial stemming from his lawsuit alleging that OpenAI abandoned its mission and should be blocked from taking the company public later this year. If Musk plays his cards right, Sam Altman could be ousted and OpenAI would remain a nonprofit forever.

The world’s richest man, Elon Musk, is squaring off against former ally (and fellow billionaire) Sam Altman in a blockbuster federal trial that kicks off today over the soul — and future —

Elon Musk on Tuesday testified that his lawsuit against OpenAI and its leaders goes well beyond one company and into the future of a technology that “could also kill us all.”

Elon Musk took the stand for the second day for his attempt to legally dismantle OpenAI.

Elon Musk sparred with lawyers for a third day yesterday at his California trial against OpenAI, struggling to explain why his own for-profit AI empire

OpenAI co-founders Elon Musk and Sam Altman have shown up for Tuesday’s opening statements in a high-stakes trial revolving around a bitter feud between the former friends that could reshape the future development of artificial intelligence.

The Tesla CEO showed frustration in court when OpenAI's lawyer suggested that Musk had sought to take control of OpenAI and hired away a key employee.