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."

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

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.

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.

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

OpenAI CEO Sam Altman, Oracle founder Larry Ellison and SoftBank CEO Masayoshi Son comment on President Trump’s Stargate AI investment project in an interview with FOX News anchor Bret Baier on ‘Special Report.

He doesn’t sound intimidated, after giving to Trump’s inaugural.