Elon. Musk sued OpenAI and its co-founder Sam. Sam Altman and Greg. The Greg Brockman case entered its third day of trial on Thursday. Musk testified at length that day in an effort to prevent the company from transforming into a for-profit enterprise.

At the heart of the case is Musk's accusation that OpenAI and Altman misled him into investing $38 million in the company's early stages. At that time, the project was still a non-profit organization with the mission of developing safe artificial intelligence (AI) for mankind, but it later transformed into a for-profit enterprise. “I was a fool who gave them free money to launch a startup,” Musk testified Wednesday in federal court in Oakland, California.

On Wednesday and Thursday, Musk spoke with Altman and OpenAI’s lawyer William. Hours of cross-examination by William Savitt. Savitt has represented both Musk and clients suing Musk in previous cases. He tried to convince the jury that Musk not only knew about OpenAI's early plans to form a for-profit entity, but also explicitly supported it and asked for majority control.

On Thursday, Savitt continued his attack, insisting that OpenAI has no provisions prohibiting the establishment of for-profit affiliates or placing limits on its profits.

Musk reiterated his previous testimony. "You just can't steal from a charity," he said.

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