Meta, AI entrepreneurs, academics, and other charities and activists are criticizing the startup's plan to shed its ties to its nonprofit parent.

Bret Taylor, the chairman of OpenAI’s board, said the artificial intelligence company was “not for sale.” Mr. Musk is separately raising money for his A.I. start-up, xAI.

The rivalry between Elon Musk and OpenAI has reached a new high after the company’s board unanimously rejected Musk’s bid, labeling it as an attempt to disrupt competition. OpenAI chairman Bret Taylor reinforced the organization’s stance,