Closing arguments wrap in Musk v. Altman trial, jury deliberation begins Monday

Long-awaited closing arguments in the lawsuit Elon Musk filed against OpenAI and Sam Altman wrapped up in a San Francisco federal courtroom. The jury will begin deliberations on Monday, but the panel's verdict will be advisory only. Judge Yvonne Gonzalez Rogers will issue the final ruling on the case.

Musk accuses OpenAI and Altman of breaching the company's founding agreement and converting it into a profit-driven entity that excluded him from the upside. Plaintiff lawyers argued that the partnership signed with Microsoft accelerated this restructuring. The defence countered that OpenAI's structural changes followed lawful contracts and proper governance.

The outcome could shape how nonprofit corporate structures are used across the artificial intelligence sector. Microsoft, OpenAI's largest investor, has followed the proceedings closely as the relationship between the two companies came under scrutiny. Internal correspondence between the two surfaced in court and was discussed in publicly available filings during the trial.