OAKLAND, May 1 -- 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 differs from the one he is trying to take down.

"Few answers are going to be complete, especially when you cut me off all the time," the visibly irritated multibillionaire said as he resumed his duel Thursday morning with the defense attorney for OpenAI.

Federal Judge Yvonne Gonzalez Rogers, who must decide whether OpenAI-the creator of ChatGPT-betrayed its original nonprofit mission, had to intervene several times to compel the world's richest man to answer questions.

After the judge accused him of playing lawyer by complaining that opposing counsel's questions were "...