Musk and Altman shared a hug after speaking at a tech conference in March, per The Wall Street Journal.

Elon Musk has updated his fraud, breach of contract, and racketeering lawsuit against OpenAI to make antitrust claims against Microsoft, accusing the two companies of attempting to “monopolize the generative AI market.

Musk alleges Altman’s OpenAI has strayed from its initial non-profit mission and has sought to cut off competition from other AI companies, like Musk’s xAI.