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.

Trump called Stargate the “largest AI infrastructure project, by far, in history.” OpenAI said in a press release that Stargate is a “new company which intends to invest $500 billion over the next four years building new AI infrastructure for OpenAI in the United States,” adding that it will begin deploying $100 billion “immediately.”