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What was the OpenAI trial between Elon Musk and Sam Altman about?

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Elon Musk sued OpenAI, Sam Altman, Greg Brockman, and Microsoft in 2024, arguing that OpenAI had abandoned its original nonprofit mission by shifting toward commercial development of artificial intelligence. OpenAI denied the allegations, saying Musk had understood and supported the company’s evolving structure. In May 2026, a federal court dismissed Musk’s claims after a jury found that he had waited too long to file the lawsuit.