xAI, Elon Musk’s OpenAI rival, is closing on $6B in funding and X, his social network, is already one of its shareholders

xAI, Elon Musk’s 10-month-old competitor to the AI phenom OpenAI, is raising $6 billion on a pre-money valuation of $18 billion, according to one trusted source close to the deal. The deal – which would give investors one quarter of the company –  is expected to close in the next few weeks unless the terms of the deal change.
The deal terms have changed once already. As of last…