The new cash brings xAI’s total raised to $12 billion, adding to the $6 billion tranche xAI raised this spring. CNBC reported in November that xAI was aiming for a $50 billion valuation — double its valuation as of six months ago.

In the world of generative artificial intelligence ( AI ), the scrap between Elon Musk and Sam Altman is in the same league. It is both silly and captivating. Silly because they insult each other, try to discredit each other’s chatbots and fight over who meant what almost a decade ago when they co-founded Open AI.