Elon Musk vs Sam Altman: $134 Billion OpenAI Trial Begins in Oakland as World’s Richest Man Takes AI Rival to Federal Court
Jury selection has begun in what is being called the trial of the decade in the technology world: Elon Musk vs Sam Altman, a $134 billion federal civil lawsuit that pits the world’s richest man against the CEO of OpenAI, the company behind ChatGPT. The trial, which opened at the federal courthouse in Oakland, California, on Monday, April 28, promises to lay bare the inner workings of one of the most consequential companies in the history of artificial intelligence and the bitter personal fallout between two men who once shared a vision for AI’s future.
The Core Allegations
At the heart of the case is Musk’s claim that Sam Altman and OpenAI’s leadership betrayed the organisation’s founding mission. Musk, who invested approximately $38 million in OpenAI during its early years as a nonprofit, argues that he was promised the organisation would remain dedicated to developing artificial general intelligence (AGI) for the public good — not for private profit.
Instead, Musk alleges, Altman and his co-founders transformed OpenAI into what Musk’s legal filings describe as a “market-paralyzing gorgon” — a for-profit entity that has partnered with Microsoft in a deal worth tens of billions of dollars and is now reportedly preparing for an initial public offering. Musk is seeking $134 billion in compensation for what he calls the “unjust enrichment” of OpenAI and Microsoft at the expense of his original investment and the nonprofit’s stated mission.
Additionally, Musk wants Altman removed from his position as CEO and from OpenAI’s nonprofit board. It is a personal demand as much as a legal one, reflecting the depth of the rift between the two men, who were once close collaborators and are now fierce rivals in the AI space through Musk’s own AI venture, xAI, and its chatbot Grok.
Altman’s Defence
Altman and OpenAI’s legal team have mounted a robust defence. They argue that Musk’s investment came with no contractual restrictions on OpenAI’s evolution, and that the transition to a for-profit model was a necessary step to secure the massive capital and computing resources required to advance AI research. The partnership with Microsoft, they contend, was essential because the scale of infrastructure needed for training large language models far exceeded what a nonprofit could fund through donations alone.
Crucially, Altman’s lawyers argue that OpenAI remains a nonprofit — with a for-profit subsidiary that operates under the nonprofit’s governance. They plan to demonstrate that the organisation’s structure continues to prioritise its mission of ensuring AGI benefits all of humanity, even as it generates commercial revenue.
Altman is expected to spend at least six hours on the witness stand, divided evenly between questioning by his own lawyers and cross-examination by Musk’s legal team. His lawyers have also indicated they will question Musk about “his attacks on, and bid for, OpenAI in recent years” — a reference to Musk’s 2024 attempt to acquire OpenAI, which was rebuffed.
Key Witnesses and What to Expect
Musk himself is expected to testify for approximately two hours, describing what he sees as the broken promises that led to this lawsuit. Known for his combative courtroom style — having previously testified in a securities fraud trial and the case that reinstated his $55.8 billion Tesla pay package — Musk is likely to frame himself as an idealist who was betrayed by a partner who chose profit over principle.
Other key witnesses are expected to include Greg Brockman, OpenAI’s co-founder and former president; Microsoft CEO Satya Nadella, whose company’s multi-billion-dollar partnership with OpenAI is central to the case; and Ilya Sutskever, the former OpenAI chief scientist whose dramatic exit from the company in 2023 — and brief attempt to oust Altman — adds another layer of intrigue to the proceedings.
The trial comes at a particularly turbulent time for the AI industry. OpenAI has faced reports of missed user and revenue targets ahead of its planned IPO, contributing to a broader selloff in AI-related stocks. The company’s recent OpenAI’s surprise acquisition of the TBPN talk show signalled its ambitions to diversify beyond technology, but also raised questions about mission drift.
The Broader Stakes for the AI Industry
The implications of this trial extend far beyond the two individuals at its centre. The case will set important precedents for how AI companies are governed, how early investors’ expectations are protected, and whether the nonprofit-to-for-profit transition that OpenAI pioneered can withstand legal scrutiny.
If Musk prevails, it could have a chilling effect on similar structural transitions in the tech world, where several AI startups have adopted hybrid models. A verdict against OpenAI could also embolden regulators and legislators who have been pushing for stricter oversight of AI companies. India’s own regulatory actions requiring OpenAI and Google to accept AI copyright frameworks illustrate the growing global appetite for holding AI companies accountable.
If Altman and OpenAI prevail, it would validate the argument that AI development requires the kind of capital that only for-profit structures can attract, and that mission-driven organisations can maintain their principles even while operating commercially. This would likely accelerate the trend of AI nonprofits converting to or creating for-profit subsidiaries.
The trial is expected to last several weeks, with the jury drawn from the Oakland community. Legal analysts have noted that jury perception of both men — Musk as the world’s richest person with his own competing AI company, and Altman as the face of a technology that has transformed how millions of people work and communicate — will be a significant factor in the outcome. In the context of broader corporate news and AI developments, this case echoes other corporate accountability battles playing out across industries. The world is watching Oakland this week.
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