Elon Musk is clashing with OpenAI CEO Sam Altman over President Donald Trump’s latest touted Stargate artificial intelligence infrastructure project. in a quarrel between the two tech billionaires who started on the OpenAI board and are currently testing Musk’s influence with the new president.

Trump on Tuesday discussed a joint venture investing up to $500 billion as part of a new partnership formed by OpenAI, the maker of ChatGPT, alongside Oracle and SoftBank.

The new entity, Stargate, is already starting to build data centers and necessary electricity production for the further development of rapidly evolving AI technology.

Trump said it was a “resounding statement of confidence in America’s potential” under his new administration, with an initial private investment of $100 billion that could grow to five times that sum.

But Musk, a close Trump adviser who helped finance his campaign and is now leading a government cost-cutting initiative, questioned the value of that investment hours later.

“They don’t really have any money,” Musk wrote on his social platform X. “SoftBank got way less than $10 billion. I have that on good authority.

Altman responded Wednesday by saying Musk was “wrong, as I’m sure you know” and inviting Musk to come visit the first site in Texas already under construction.

“This is great for the country. I realize that what is great for the country is not always what is optimal for your businesses, but in your new role, I hope you will prioritize ( America),” Altman wrote: using an American flag emoji to represent America.

Behind the quarrel

The public conflict over Stargate is part of a years-long dispute between Musk and Altman that began with a boardroom rivalry over who should run OpenAI, which both men helped found.

Musk, an early investor and board member of OpenAI, sued the artificial intelligence company last year alleging that it had betrayed its founding purposes as a nonprofit research laboratory benefiting the public good rather than seeking profits.

Musk has since escalated the dispute, adding new claims and seeking a court order that would end the conflict. OpenAI projects to more fully transform into a for-profit business. A hearing is scheduled for February in federal court in California.

The world’s richest man, whose companies include Tesla, SpaceX and X, last year launched his own rival AI company, xAI, which is building its own large data center in Memphis, Tennessee. Musk says he faces unfair competition from OpenAI and its close business partner Microsoft, which has provided the enormous computing resources needed to build AI systems such as ChatGPT.