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Sam Altman Takes the Stand in Oakland, Defending OpenAI Mission Against Elon Musk’s Allegations

The high-stakes legal battle between the world's richest man and the leader of the AI revolution reached a fever pitch Tuesday as OpenAI CEO Sam Altman took the witness stand in Oakland, California. The trial, which has captivated the tech industry, pits Altman against his former mentor and co-founder Elon Musk in a dispute over the very soul of the organization they launched over a decade ago.

Elon Musk’s lawsuit alleges that Altman and OpenAI President Greg Brockman breached their "charitable trust" by transforming what was supposed to be an open-source nonprofit into a multi-billion-dollar for-profit juggernaut backed by Microsoft. Musk’s legal team argues that the shift was a betrayal of the mission to develop Artificial General Intelligence (AGI) for the good of humanity, claiming the founders have unjustly enriched themselves to the tune of billions.

During his testimony, Altman told a nine-person jury that he struggled to understand Musk’s specific allegations of theft. He defended the company’s complex structure, asserting that the creation of a for-profit subsidiary was the only viable path to securing the massive computing power and talent required to compete with tech giants like Google. "I do not believe I could get $200 billion into a nonprofit through philanthropy alone," Altman testified, highlighting the immense capital required for AI development.

Altman’s testimony also turned personal, as he described Musk’s own past attempts to take control of the venture. Altman claimed that Musk had previously suggested absorbing OpenAI into Tesla and had made "hair-raising" demands for equity before walking away from the board in 2018. Under cross-examination, Musk’s attorneys pressed Altman on his reputation for honesty, citing past board disputes and his brief ouster from the company in 2023. Altman maintained his stance, telling the court, "I believe I am an honest and trustworthy businessperson."

The trial is moving at a rapid pace under Judge Yvonne Gonzalez Rogers, who is expected to oversee closing arguments this Thursday. While the jury’s verdict will be advisory, the final ruling could have seismic implications for OpenAI's valuation—currently estimated at over $850 billion—and could potentially force the company to "disgorge" billions in assets back to its original nonprofit entity.

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By: NBC Palm Springs

May 13, 2026

Sam AltmanElon MuskOpenAI trialOakland Federal CourtGreg Brockmanartificial general intelligencenonprofit vs forprofitChatGPTlegal battle 2026
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Sam Altman Takes the Stand in Oakland, Defending OpenAI Mission Against Elon Musk’s Allegations