A court battle is underway between Elon Musk and OpenAI CEO Sam Altman, with Musk accusing Altman of trying to "steal" a charity. The trial involves a dispute over the origins and control of OpenAI, with Musk claiming the idea was his and that executives, including Altman, took advantage of the nonprofit. The outcome of the trial could have significant implications, with some reports suggesting it could be worth $150bn and reshape the future of artificial intelligence.