The civil trial between Elon Musk and Sam Altman, a Silicon Valley tech billionaire, is set to begin in a federal courtroom in Oakland, California, on Monday. The case involves a civil trial that involves Musk, the CEO of Tesla and SpaceX, accusing Altman of betraying his trust in OpenAI's transformation from nonprofit status to a for-profit behemoth. The trial, set to last four weeks, will witness prominent tech executives including Musk, Altman and Microsoft CEO Satya Nadella, current and former OpenAI board members, and top AI researchers. Altman's side argues that Musk is rewriting history and never gave the full $1 billion he pledged for OpenAI. The court case could determine the future of OpenAI and its signature app, ChatGPT.