In the latest development of the pair’s longtime feud, Elon Musk, a key White House adviser but also the founder of AI company xAI, criticized the $500 billion Stargate AI infrastructure plan backed by rival Sam Altman and his company OpenAI.

Elon Musk “very much” overstepped his bounds when he criticized a $500 billion artificial intelligence project touted by President Donald Trump, according to a White House official as aides are reportedly “furious” with the tech mogul while allies lament that he “abused the proximity to the president.”