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.”

The tech billionaires have a rocky history, and Musk's comments about funding for the project, which could attract $500 billion prompted a pointed response from OpenAI leader Altman.