Tesla Inc. CEO Elon Musk cast doubt Wednesday on the ambitious $500 billion Project Stargate, hours after its announcement, claiming lead investor SoftBank Group SFTBY -0.36% + Free Alerts SFTBF + Free Alerts has “well under $10B secured.”

"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, CEO of Tesla and SpaceX, has expressed doubts about the financial viability of the USD 500 billion Stargate AI Project, a collaboration between OpenAI and SoftBank Group. Musk questioned SoftBank's ability to fund the massive initiative,

Elon Musk is already casting doubt on OpenAI’s new, up to $500 billion investment deal with SoftBank (SFTBY) and Oracle (ORCL), despite backing from his allies — including President Donald Trump.

Elon Musk raises concerns about the Trump-backed $500 billion Stargate AI Project, questioning SoftBank's ability to fund the initiative.

Tech billionaire Elon Musk voiced doubts about President Trump’s newly announced infrastructure plan for artificial intelligence, claiming the technology companies behind the effort do not

Elon Musk is clashing with OpenAI CEO Sam Altman over the Stargate artificial intelligence infrastructure project touted by President Donald Trump, the latest in a feud between the two billionaires th

Hours later, Elon Musk publicly questioned whether the joint venture would ever get off the ground.Musk wrote on X, his social-media platform, that two of the companies behind the project didn’t have enough capital to follow through on their pledges.

The $500 billion Stargate project is projected to create hundreds of thousands of jobs. Here's what's known so far.

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.