OpenAI CEO Sam Altman testifies in Elon Musk’s trial, denying he ‘stole a charity’

Sam Altman sat in a courtroom this week doing something most tech CEOs try to avoid: explaining, under oath, whether he basically stole a charity.

The OpenAI chief executive testified in Elon Musk’s civil lawsuit against him and OpenAI, pushing back against accusations that he and OpenAI President Greg Brockman transformed what was supposed to be a nonprofit AI safety lab into a profit-driven enterprise. Altman’s core message was straightforward: OpenAI is still a large charity, and he’s an honest businessperson running it.

What Musk is actually alleging

Musk’s lawsuit paints a specific picture. He claims Altman and Brockman effectively “looted” OpenAI’s nonprofit structure, undermining its original mission of developing safe artificial intelligence for the benefit of humanity. The vehicle for this alleged heist, according to Musk, was OpenAI’s controversial partnership with Microsoft, which restructured the organization into a hybrid model that allowed private investors to profit from the lab’s work.

Musk contributed approximately $38 million to OpenAI before he stopped donating in 2017. His argument is essentially that he funded a mission, not a startup, and the people running it changed the deal after he walked away.

Altman, for his part, testified about his own substantial financial and leadership contributions to OpenAI. He framed the organization’s evolution not as a betrayal of its founding principles but as a necessary adaptation to compete in a field that turned out to require billions of dollars in compute infrastructure.

The counter-narrative: Musk wanted more, not less

According to Altman’s testimony, Musk himself sought tighter control over OpenAI during its early years. This allegedly included proposals to merge the lab with Tesla, which would have given Musk’s electric car company direct access to OpenAI’s research and technology. Altman also testified about plans involving familial inheritance of the lab, suggesting Musk envisioned a scenario where control of OpenAI could pass within his own family.

Musk eventually left OpenAI’s board and later founded xAI, his own competing artificial intelligence company.

Why this trial matters beyond the courtroom

This case lands at a moment when the entire tech industry is watching how hybrid nonprofit and for-profit structures hold up under pressure. OpenAI is not the only organization navigating this tension. Anthropic, founded by former OpenAI researchers, operates under a public benefit corporation model. Musk’s xAI has taken a more straightforward for-profit approach.

All three companies are eyeing potential IPOs. The governance structures they choose, and the legal precedents set by cases like this one, will shape how mission-driven tech organizations raise capital, distribute profits, and answer to both investors and the public.

The question the court is ultimately grappling with is whether OpenAI’s structural evolution was a pragmatic necessity or a breach of trust. OpenAI was founded in 2015 as a nonprofit research organization focused on developing artificial general intelligence for the greater good. Musk left the board in 2018 following disputes over governance and funding.

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