On Tuesday, President-elect Donald Trump picked Musk and biotechnology company founder Vivek Ramaswany to lead a new Department of Government Efficiency, whose acronym echoes dogecoin's name. The case is Gorog et al v. Musk et al, U.S. District Court, Southern District of New York, No. 22-05037.

After joining with Mr. Musk to create OpenAI in 2015 and pledging to carefully develop artificial intelligence for the benefit of humanity, the suit claimed, Mr. Altman and Mr. Brockman abandoned this mission by entering its multibillion-dollar partnership with Microsoft.