Elon Musk was seen arriving at a federal court in Oakland, California, on Tuesday for opening statements in his trial against OpenAI.
Elon Musk reportedly said he felt like a “fool” for backing Sam Altman’s OpenAI.
The testimony came in Musk’s lawsuit accusing OpenAI of abandoning its mission to develop artificial intelligence for the benefit of humanity.
ELON MUSK ATTORNEY CLAIMS OPENAI, SAM ALTMAN ‘STOLE A CHARITY’ AS HIGH-STAKES LEGAL FIGHT BEGINS
Musk, who contributed millions, said he believed he was supporting a nonprofit venture, according to Reuters.

Elon Musk arrives for the trial of against OpenAI held at Dellums Federal Building in Oakland, California Tuesday, April 28, 2026. (Jessica Christian/San Francisco Chronicle via Getty Images / Getty Images)
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“I felt like they had not been honest with me,” Musk said on Wednesday. “What they really wanted to do was create a for-profit where they had as much shareholder ownership as possible.”
This is a developing story. Please check back for updates.