Musk’s criticisms have escalated into legal actions. In February, he filed a lawsuit against OpenAI, accusing it of breaching its nonprofit mandate. Although the lawsuit was withdrawn in June, Musk refiled it in August, further intensifying the conflict.

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.