OpenAI lawsuit trial: Musk v. Altman over nonprofit mission and fraud

The OpenAI lawsuit trial is underway in the US District Court for the Northern District of California, with Elon Musk and Sam Altman facing a jury over whether OpenAI betrayed its nonprofit mission tied to AGI for the public good. Jury selection began April 27, 2026, and Musk testified April 28–30. Musk says he donated about $44 million to OpenAI for its “safe, open AI” nonprofit purpose, but the company later shifted toward profit-seeking behavior and deeper commercial ties—especially with Microsoft. He is pursuing fraud and unjust enrichment claims. Judge Yvonne Gonzalez Rogers has already dismissed parts of Musk’s case, leaving the jury to consider remaining issues and potential structural remedies. OpenAI’s defense argues there was no binding contract requiring OpenAI to stay strictly nonprofit, weakening the fraud theory. The defense also frames Musk’s motivation as competitive, citing Musk’s own AI firm, xAI. For traders, the OpenAI lawsuit trial could affect risk sentiment around AI governance and compliance. In the short term, headline-driven volatility may rise around AI-adjacent narratives. In the long term, court scrutiny of donation-to-profit pivots could influence expectations for major partnerships (including Microsoft/ OpenAI) and reshape governance risk pricing in the tech sector. OpenAI lawsuit trial outcomes may also determine whether structural changes are ordered, but the jury’s advisory verdict will feed into the court’s final liability and remedies decision.