Elon Musk gets testy on the stand: ‘I thought I had started a nonprofit with OpenAI but they stole it’

Elon Musk on Thursday sparred with an attorney for OpenAI during his third day of testimony in the contentious trial over the company’s pivot from nonprofit status to a for-profit venture valued at hundreds of billions of dollars.

The trial centers on the 2015 birth of the ChatGPT maker as a nonprofit startup primarily funded by Musk. It pits the world’s richest person against Sam Altman, a fellow OpenAI co-founder he accuses of betraying promises to keep the company as a nonprofit dedicated to humanity’s benefit.

Tempers have flared on both sides of the high-stakes trial, as the morning began with an existential discussion about the future of humanity — complete with references to “The Terminator” movies — and how much witness testimony would focus on AI safety.

“Your client, despite these risks, is creating a company that is in the exact same........

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