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.

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

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. artificial intelligence infrastructure.

Sam Altman, CEO of OpenAI, sparred Wednesday with Elon Musk over funding for a Trump-backed AI infrastructure project one day after he stood with the president in the White House to announce the project.

The Stargate project has big implications for U.S. AI leadership, but also for who's winning the new president's ear.

Shortly after OpenAI announced a $500 billion AI infrastructure project, Elon Musk took to X to claim the whole thing a sham.The Latest Tech News, Delivered to Your Inbox

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 and OpenAI CEO Sam Altman are in a dispute over the Stargate AI project proposed by Donald Trump, which aims to invest $500 billion in AI infrastructure. Musk questions the necessity of the funding while Altman defends the project as beneficial for the country.