Sam Altman and Elon Musk are facing off in a high-stakes trial that could alter the future of OpenAI and its most well-known product, ChatGPT. In 2024, Musk filed a lawsuit accusing OpenAI of abandoning its founding mission of developing AI to benefit humanity and shifting focus to boosting profits instead.

Microsoft CEO Satya Nadella is set to appear today, with OpenAI cofounder and former chief scientist Ilya Sutskever lined up to testify after that.

Musk was a cofounder of OpenAI and claims that Altman and Brockman tricked him into giving the company money, only to turn their backs on their original goal. However, OpenAI says that “This lawsuit has always been a baseless and jealous bid to derail a competitor” in a bid to boost Musk’s own SpaceX / xAI / X companies that have launched Grok as a competitor to ChatGPT.

Elon Musk — plaintiff, OpenAI cofounder and now CEO of rival xAI

Steven Molo — lead counsel for plaintiff

Jared Birchall — manager of Musk’s family office

Shivon Zilis — former OpenAI board member who shares multiple children with Musk

Sam Altman — defendant, CEO of OpenAI

William Savitt — lead counsel for defendant

Greg Brockman — president of OpenAI as well as a cofounder

Ilya Sutskever — former chief scientist at OpenAI and a cofounder

Yvonne Gonzalez Rogers — aka YGR, trial judge

Here’s all the latest on the trial between Musk and Altman: