Altman and Musk were OpenAI’s founding co-chairs in 2015, but their relationship has devolved into name-calling and lawsuits.

OpenAI CEO Sam Altman called Stargate, “the most important project for this era” and promised that all of the new investment his company was making would help cure diseases. Altman was actually prompted by Trump to talk about the medical advances that AI would supposedly figure out.

U.S. President Donald Trump on Thursday dismissed criticism from close ally Elon Musk about a $500 billion artificial intelligence project that Trump announced with great fanfare at the White House earlier this week.