SpaceX has acquired xAI, the company announced on Monday, merging two of Elon Musk’s most ambitious companies into the most valuable private company in the world.

On Monday, he announced xAI would be merging with SpaceX, creating a combined company valued at $1.25 trillion.

“SpaceX has acquired xAI to form the most ambitious, vertically-integrated innovation engine on (and off) Earth, with A.I., rockets, space-based internet, direct-to-mobile device communications and th...