As Elon Musk contemplates the relationship between several of his companies, he said on social media that Tesla shareholders will vote on whether to invest in xAI.

Investors familiar with the matter told The Wall Street Journal that the rocket company SpaceX has agreed to invest a whopping $2 billion in xAI, the Musk-led firm behind the controversial large language model Grok. This investment makes up almost half of the $5 billion of equity that the AI company raised last month.