Elon Musk has sold social media site X to his own xAI artificial intelligence company in a $33 billion all-stock deal, the billionaire announced on Friday.

A couple of years after buying Twitter, Elon Musk announced that his AI business xAI has acquired the social media platform that’s now known as X. In a tweet, he described it as an all-stock transaction, valuing xAI at $80 billion and X at $33 billion.

The all-stock deal values xAI at $80 billion and X at $33 billion, according to Musk’s post. The billionaire has increasingly linked the two companies, wielding user data from X to train its AI models.