Musk's lawyer attacks Altman's credibility in final OpenAI trial arguments

If you don't believe him, they cannot win.
Musk's attorney Steven Molo's closing argument to the jury, reducing the entire case to a question of Sam Altman's credibility.

In an Oakland courtroom, a founding dispute over the soul of artificial intelligence has arrived at its final reckoning: Elon Musk accuses Sam Altman and OpenAI of transforming a humanitarian mission into a profit-seeking enterprise without consent, while seeking $150 billion in damages for what he calls a fundamental betrayal of trust. The case turns less on documents than on the older question of whether powerful men can be believed — and what it means when the institutions built to serve humanity begin to serve themselves instead. Whatever the jury decides, the trial has already forced a public reckoning with how Silicon Valley governs the technologies it insists will reshape the world.

  • Musk's attorney made credibility the entire battlefield in closing arguments, telling jurors that if they cannot trust Altman's testimony, the verdict belongs to Musk.
  • OpenAI fired back by portraying Musk not as a principled founder but as a rejected power-seeker who turned to litigation only after failing to gain unilateral control of the organization.
  • The financial stakes are staggering — OpenAI is approaching a potential $1 trillion IPO, Microsoft has poured over $100 billion into the partnership, and Musk's own xAI is readying its own public offering.
  • Former OpenAI chief scientist Ilya Sutskever testified to what he called a consistent pattern of dishonesty from Altman, deepening the credibility crisis at the heart of the case.
  • Jury deliberations have not yet begun, and if no verdict arrives by Monday, the court will turn to the question of how OpenAI might be restructured — a remedy that could reshape AI governance industry-wide.

The courtroom in Oakland has become the arena for one of Silicon Valley's most consequential confrontations. Elon Musk is suing OpenAI and its chief executive Sam Altman for $150 billion, claiming he was manipulated into donating $38 million to what he believed was a nonprofit dedicated to safe AI development — only to watch Altman quietly build a for-profit subsidiary and accept tens of billions from Microsoft and other investors without his knowledge.

Closing arguments have centered almost entirely on trust. Musk's attorney Steven Molo told the nine-person jury that the case hinged on a single question: whether they believe Altman. He cited testimony describing Altman as dishonest and noted that neither Altman nor OpenAI president Greg Brockman had clearly affirmed their own honesty on the stand. Former chief scientist Ilya Sutskever testified to what he called a consistent pattern of lies from Altman — and the 2023 episode in which Altman was briefly removed from the board over transparency concerns loomed over the proceedings.

OpenAI's defense reframed the story entirely. The company argued that its for-profit conversion strengthened rather than betrayed its mission, with the nonprofit retained as a shareholder. More pointedly, OpenAI presented evidence that Musk himself had once supported creating a for-profit arm to raise capital — and that his failed attempt last year to acquire OpenAI through his own AI startup, xAI, revealed a motive rooted in power rather than principle.

The financial dimensions of the case are vast. OpenAI is preparing for a potential $1 trillion IPO. Altman holds stakes worth more than $2 billion in companies doing business with OpenAI; Brockman's holdings are valued near $30 billion. The trial has unfolded as public anxiety about AI — its role in surveillance, medical decisions, financial advice, and the spread of deepfakes — continues to grow.

U.S. District Judge Yvonne Gonzalez Rogers is presiding. If deliberations extend past Monday, the court will turn to questions of restructuring and damages. The outcome may well determine how Silicon Valley handles the conversion of mission-driven organizations into commercial enterprises — and who gets to decide what humanity's most powerful technologies are ultimately for.

The courtroom in Oakland, California has become the stage for one of Silicon Valley's most consequential disputes: Elon Musk's accusation that OpenAI and its chief executive Sam Altman betrayed the organization's founding promise. Musk is seeking $150 billion in damages, claiming he was manipulated into donating $38 million to what he believed was a nonprofit devoted to developing safe artificial intelligence for humanity's benefit. Instead, he argues, Altman and the organization's leadership created a for-profit subsidiary without his knowledge, then accepted tens of billions of dollars from Microsoft and other investors to fuel its expansion.

The case has reached its closing arguments, with Musk's attorney Steven Molo making a direct assault on Altman's trustworthiness. In his final pitch to the nine-person jury, Molo centered his case on a single proposition: if jurors do not believe Altman, Musk wins. He cited testimony describing Altman as dishonest and questioned whether Altman and OpenAI president Greg Brockman had ever unambiguously declared their honesty during their testimony. The strategy was blunt—credibility, Molo argued, was the hinge on which the entire case turned.

OpenAI's defense has been equally direct: the organization strengthened itself by becoming a for-profit entity, they argue, while maintaining the nonprofit as a shareholder in the new corporate structure. The company also contends that Musk's real motive was not principle but power—that he wanted unilateral control over OpenAI and, when he could not secure it, turned to litigation. To support this claim, OpenAI presented evidence that Musk himself had supported the creation of a for-profit arm to raise capital for computing power and compete with rivals like Google. They also highlighted Musk's attempt last year to acquire OpenAI through a consortium led by his own AI startup, xAI, suggesting his current lawsuit contradicts his stated principles.

The question of honesty has haunted both men throughout the trial. Musk's lawyers portrayed Altman and Brockman as motivated by personal enrichment, presenting testimony that Altman holds stakes worth more than $2 billion in companies doing business with OpenAI, while Brockman's own OpenAI holdings are valued at nearly $30 billion. They also raised Altman's removal from OpenAI's board in 2023 over transparency concerns—a removal that lasted less than a week before his reinstatement. Ilya Sutskever, OpenAI's former chief scientist, testified that he had gathered evidence of what he called a consistent pattern of lies from Altman. Musk's legal team further questioned whether Altman's involvement with companies working alongside OpenAI created insurmountable conflicts of interest.

The stakes extend far beyond this single courtroom. OpenAI is preparing a potential initial public offering that could value the company at $1 trillion. Microsoft has already invested more than $100 billion in its partnership with OpenAI. Musk's xAI, now housed within his SpaceX division, is itself preparing a potential multibillion-dollar public offering. The trial has unfolded against a backdrop of growing public anxiety about artificial intelligence—its use in facial recognition, financial advice, medical diagnosis, and the creation of harmful deepfakes has bred widespread distrust and fear that the technology will displace human workers.

U.S. District Judge Yvonne Gonzalez Rogers is overseeing the case. The nine-person jury has not yet begun deliberations, and the timeline remains unclear. If no verdict is reached by Monday, the judge and attorneys will return to court to discuss what restructuring of OpenAI might look like and what damages should be awarded if Musk prevails. Should Musk lose, Gonzalez Rogers will grant no relief. The outcome will likely reverberate through Silicon Valley's approach to nonprofit-to-for-profit conversions and the governance of artificial intelligence itself.

The credibility of Sam Altman is directly in question in this case. If you do not believe him, they cannot win.
— Steven Molo, Musk's attorney, in closing arguments
Gathered evidence demonstrating a consistent pattern of lies from Altman
— Ilya Sutskever, OpenAI's former chief scientist, in testimony
The Hearth Conversation Another angle on the story
Inventor

What made Musk decide to sue now, after all these years? He left the board in 2018.

Model

The for-profit conversion happened without him knowing, and then the scale of the Microsoft investment—tens of billions—made it real in a way it hadn't been before. He felt the original mission had been abandoned.

Inventor

But OpenAI says he actually supported creating a for-profit entity back when it mattered. How does Musk answer that?

Model

His lawyers argue the context was different—he thought it would be a smaller, controlled structure, not this massive corporate machine funded by Microsoft. And they point to his attempt to buy the company last year as proof he still cares about the mission.

Inventor

That seems backwards. If he wanted to buy it, doesn't that suggest he wanted control, not principle?

Model

Exactly. That's OpenAI's argument. They say Musk is using the lawsuit as leverage because he couldn't get what he really wanted—power over the company.

Inventor

So the jury is really just deciding who to believe about what was promised in the beginning?

Model

Yes. And whether Altman and Brockman are the kind of people who would lie about it. That's why Musk's lawyer kept hammering on credibility in closing arguments.

Inventor

What happens if Musk wins? Does OpenAI actually get broken up?

Model

The judge decides that. But $150 billion would essentially force a restructuring. It's almost impossible to pay without fundamentally changing the company.

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