OpenAI is not for sale, and the board has unanimously rejected Mr. Musk's latest attempt to disrupt his competition,” said ...

The Endeavor CEO was enlisted to join investors who put in an unsolicited offer to buy OpenAI's majority share of its for-profit arm.

OpenAI sent a letter Friday to Marc Toberoff, the lawyer representing Elon Musk and the investors making the bid, saying that ...