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.

Elon Musk said on Monday he does not support a merger between his electric vehicle maker Tesla and his artificial intelligence startup xAI, which owns the Grok chatbot and competes with the likes of OpenAI's ChatGPT.