
Lawyers for Elon Musk and OpenAI began closing arguments Thursday in the landmark trial whose outcome could shape the future of artificial intelligence.
Musk, the world's richest man, was a co-founder of OpenAI, which started as a nonprofit in 2015 and went on to create ChatGPT. After Musk invested $38 million in its first years, his lawsuit filed in 2024 accused OpenAI CEO Sam Altman and his top deputy of shifting into a moneymaking mode behind his back.