"I genuinely respect your accomplishments and think you are the most inspiring entrepreneur of our time," Altman wrote in an X post to Musk.

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.

Elon Musk and OpenAI CEO Sam Altman are fighting on X about Stargate, the infrastructure project to build data centers for OpenAI in the U.S.

Elon Musk is skeptical about Stargate, the AI joint venture that includes OpenAI, and in a rare occurrence, he may be right.

Elon Musk weighed in on one of the first business investment unveilings by President Donald Trump Wednesday, in a move that could suggest friction at the heart of the new administration's focus on America's leadership in the global technology race.