The Guardian · California · Original story
‘Stole a charity’: Elon Musk accuses Sam Altman of betrayal in courtroom showdown
Trial is culmination of a years-long feud between Musk and Altman that has become increasingly vicious
The trial pitting Elon Musk against Sam Altman and OpenAI began in earnest on Tuesday with opening arguments, as lawyers for the two tech moguls seek to convince a California jury of their client’s version of the AI company’s history. The trial is set to feature testimony from both billionaires, as well as some of the most powerful executives in the tech industry.
Musk’s attorney argued that Altman, OpenAI and its president, Greg Brockman, broke a foundational agreement to better humanity when the non-profit pivoted towards a for-profit structure. Musk, who left OpenAI in 2018 after co-founding it with Altman and Brockman three years earlier, also alleged that his co-founders unjustly enriched themselves as the company raised billions of dollars and grew into the AI behemoth it is today.
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Dara Kerr in San Francisco and Nick Robins-Early · Tue, Apr 28, 2026, 11:10 AM
California | The Guardian
Trial is culmination of a years-long feud between Musk and Altman that has become increasingly vicious
The trial pitting Elon Musk against Sam Altman and OpenAI began in earnest on Tuesday with opening arguments, as lawyers for the two tech moguls seek to convince a California jury of their client’s version of the AI company’s history. The trial is set to feature testimony from both billionaires, as well as some of the most powerful executives in the tech industry.
Musk’s attorney argued that Altman, OpenAI and its president, Greg Brockman, broke a foundational agreement to better humanity when the non-profit pivoted towards a for-profit structure. Musk, who left OpenAI in 2018 after co-founding it with Altman and Brockman three years earlier, also alleged that his co-founders unjustly enriched themselves as the company raised billions of dollars and grew into the AI behemoth it is today.
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