Updated 2026-04-28T21:06:12.066Z The trial over OpenAI has begun, kicking off a showdown between Elon Musk and Sam Altman. Musk, the CEO of Tesla, took the witness stand on Tuesday afternoon and testified about his early career and falling out with Google's Larry Page over AI talent. He's expected back on Wednesday. At the heart of the case is Musk's accusation that OpenAI founders, including CEO Sam Altman, who also showed up at court Tuesday, deceived him into donating $38 million to OpenAI based on promises that it would remain a nonprofit dedicated to developing AI for the public's benefit, and not for private gain. The trial pits two of the most powerful tech titans against each other. Musk is asking for up to $134 billion in damages and for Altman to lose his job, among other potential remedies. Musk opened his testimony saying that a verdict siding with OpenAI would greenlight the 'looting' of American charities.…