It’s the latest clash in a feud between the two tech billionaires that started on OpenAI’s board and is now testing Musk’s influence with the new president.

Musk slammed a Trump-backed $500 billion AI joint venture building out OpenAI’s artificial general intelligence.

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.