The two most powerful figures in artificial intelligence are finally facing each other in a California courtroom, and the outcome could redraw the map of the entire industry.

by Kasun Illankoon, Editor in Chief at Tech Revolt

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1. This began as a friendship, and ended in a federal courthouse

The story of Musk v. Altman is, at its heart, a Silicon Valley origin myth gone badly wrong. In 2015, Musk and Altman were among a small group of tech idealists who co-founded OpenAI as a nonprofit, motivated by a shared anxiety about the unchecked power of artificial intelligence. Musk contributed what he says amounted to at least $44 million in the organisation's early years. The founding charter was explicit: OpenAI's research would be open, its mission humanitarian, and its governance free from the distortions of profit.

Three years later, that partnership collapsed. Musk left OpenAI's board in 2018 following an acrimonious internal power struggle — including a reported push by Musk to merge the lab with Tesla, which Altman and others resisted. In 2019, OpenAI created a capped-profit subsidiary to attract the capital it needed to compete. In October 2025, it went further still, converting into a full public benefit corporation. By that point, Musk had already launched xAI, his own rival AI company, in 2023. What was once a shared mission had become a war.

2. The claims are explosive — but the legal standing is genuinely contested

Musk's lawsuit — now in its fourth amended form and refiled in federal court in Oakland — alleges breach of contract, fraud, constructive fraud, breach of charitable trust, and unjust enrichment. He contends that Altman and OpenAI president Greg Brockman induced him to bankroll the nonprofit on the explicit understanding that any artificial general intelligence developed there would remain open-source and shared with the world. The conversion to for-profit, he argues, was a betrayal of that founding promise — and enriched insiders at the public's expense.

Yet legal scholars have raised serious questions about whether Musk even has the standing to bring some of these claims. Typically, it falls to state attorneys general — not former donors — to enforce the terms of a charitable trust. In October 2025, the attorneys general of California and Delaware struck a deal with OpenAI approving its new structure subject to conditions. OpenAI's lead attorney, Bill Savitt, wasted no time cutting to the bone: "We are here because Mr. Musk turned out to be very wrong about OpenAI. We're here now because Mr. Musk competes with OpenAI."

"Because he's a competitor, Mr. Musk will do anything he can do to attack OpenAI."

Bill Savitt, Lead Attorney for OpenAI, Opening statement, April 28, 2026

3. The stakes are staggering, for OpenAI, for Musk, and for the entire AI industry

The financial remedies Musk is seeking, an amount totaling to $134B, are almost secondary to the structural ones. He wants the court to unwind OpenAI's entire for-profit conversion, return "ill-gotten gains" to its nonprofit foundation, and remove both Altman and Brockman from the company's board. Should he prevail, the precedent could fundamentally alter how frontier AI labs raise money — and arguably slow the one organisation currently best positioned to dominate the field ahead of its own highly anticipated IPO. For Musk's xAI, a favourable ruling would not transfer assets directly, but the reputational and competitive damage to OpenAI could be profound.

Microsoft is also named as a co-defendant. Its attorney argued in opening statements that Microsoft could not have aided any alleged breach, and pointed out that Musk himself posted on X in September 2020 that "OpenAI is essentially captured by Microsoft", suggesting he knew about the partnership years before filing his lawsuit.

4. The courtroom drama is already extraordinary — and barely has begun

Musk took the witness stand on the very first day of testimony, April 28, as the first witness called by his own legal team. Before a nine-person jury in the Ronald V. Dellums Federal Building in Oakland, he testified that his lawsuit extends far beyond any one company, describing AI as a technology that "could also kill us all." Judge Yvonne Gonzalez Rogers, who also presided over the Epic v. Apple antitrust case, has already shown she will not be a passive presence, warning both Musk and Altman to rein in their social media commentary after Musk spent the preceding Monday posting attacks on OpenAI's leadership on X.

The trial is also pulling back the curtain on Silicon Valley in ways rarely seen. Hundreds of court filings have placed into the public record private texts, emails, and diary entries from the founding years of OpenAI, raw material that the industry's most powerful figures would clearly prefer to keep buried.

Former OpenAI chief scientist Ilya Sutskever, former CTO Mira Murati, and Microsoft CEO Satya Nadella are all expected to take the stand before proceedings conclude. Jury selection deliberately screened for neutrality; given widespread public familiarity, and strong opinions, about Musk, Judge Rogers noted pointedly that "people don't like him" does not preclude jurors from acting with integrity.

5. Whatever the verdict, this trial is already changing AI's future

The jury's verdict is advisory — it guides but does not bind Judge Gonzalez Rogers, who is expected to issue her ruling by mid-May 2026. Even then, an appeal is almost certain, and any structural changes would unfold over months. But the trial's significance transcends its legal outcome. It has forced OpenAI — now targeting a potential fourth-quarter IPO — to publicly defend the legal premise on which it was built, in front of the world. In a document circulated to prospective investors earlier this year, OpenAI itself characterised the litigation as a material risk to its business.

For the broader AI industry, the proceedings raise a question that will outlast any single verdict: when a company founded to serve humanity begins to serve shareholders instead, who has the right — or the standing, to object?

Musk's own record on this point is hardly spotless; xAI launched as a for-profit public benefit corporation in 2023, shed those social commitments in 2024, merged with X in 2025, and folded into SpaceX this year. OpenAI's lawyers have made certain the jury knows it. But the uncomfortable truth the trial has surfaced is that the AI industry, which routinely speaks in the language of civilisational responsibility, has so far built very few structures to enforce it.

"I have extreme concerns over AI."

Elon Musk — Witness testimony, U.S. District Court, Oakland, April 28, 2026

For now, the most consequential technology trial in years continues in a federal courthouse across the bay from San Francisco — the city that, a decade ago, hosted the first conversations between two men who thought they could build artificial intelligence for the good of humanity. The jury is still out, in every sense.