Elon Musk claimed overnight Tuesday that tech giants OpenAI, Oracle and Softbank don’t have enough money to fulfill their high-profile pledge to invest $500 billion in U.S. AI infrastructure.

Trump tasked Musk with slashing federal spending with the new Department of Government Efficiency. The pair's budding relationship has grown more entwined since Trump won back the White House, but this is one of their most public disagreements to date.

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.