Altman and Musk were OpenAI’s founding co-chairs in 2015, but their relationship has devolved into name-calling and lawsuits.

Altman said that a project like Stargate might not have been possible with "a different president."

President Donald Trump on Thursday shrugged off an ugly back-and-forth between tech CEOs Elon Musk and Sam Altman that pitted one of Trump’s most visible lieutenants against a key participant in a massive $500 billion AI project Trump announced Tuesday.

"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 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 that started on OpenAI’s board and is now testing

President Donald Trump spoke with OpenAI CEO Sam Altman by phone Friday, ahead of the AI infrastructure announcement, CNBC has learned.

The Stargate project, led by OpenAI's Sam Altman - to build the "world's largest AI infrastructure" - was announced by Donald Trump at a special press conference at the White House. Elon Musk, however,

President Donald Trump talked up a joint venture investing up to $500 billion for infrastructure tied to AI by a new partnership formed by OpenAI, Oracle and SoftBank.

President Trump ordered the security to be beefed up at the Mexico border in order to implement his immigration crackdown.

Musk has had unprecedented access to Trump both during his 2024 campaign and since he won the November election.

A new crack has appeared in the alliance between President Donald Trump and tech billionaire Elon Musk, who helped bankroll much of Trump's voter outreach operation and now heads up his "Department of Government Efficiency" task force.