Elon Musk testified over three days in a federal trial in Oakland, California, accusing OpenAI leaders of betraying the company's nonprofit origins by shifting to a for-profit model. Musk, who co-founded OpenAI in 2015 and donated about $38 million, repeatedly stated 'You can't just steal a charity' during testimony that concluded on Thursday. OpenAI has called Musk's allegations baseless amid the ongoing case involving a nine-person jury.