Elon Musk is consolidating his businesses. Today, SpaceX said it has acquired xAI, bringing Musk’s frontier AI effort under the same roof as his space and satellite operations.
According to Bloomberg, the deal is an all-stock transaction that values the combined company at $1.25 trillion, with SpaceX at $1 trillion and xAI at $250 billion—a structure that also simplifies Musk’s “one-empire” story as SpaceX weighs a future IPO.
In a post announcing the acquisition, Musk highlighted the combination as a single, vertically integrated stack spanning AI, rockets, and communications, calling it the “most ambitious, vertically-integrated innovation engine on (and off) Earth.”
Elon Musk wrote the following in his blog post:
SpaceX has acquired xAI to form the most ambitious, vertically-integrated innovation engine on (and off) Earth, with AI, rockets, space-based internet, direct-to-mobile device communications, and the world’s foremost real-time information and free speech platform. This marks not just the next chapter, but the next book in SpaceX and xAI"s mission: scaling to make a sentient sun to understand the universe and extend the light of consciousness to the stars!
Musk also used the announcement to push his long-running view that orbital data centers could become the cheapest way to scale AI compute. He floated a scenario involving launching “a million tons per year” of satellites, targeting ~100 kW of compute per ton, and argued there is a path to putting ~1 TW/year of compute into orbit, claiming that within 2–3 years, space could become the lowest-cost place to generate AI compute.
That vision is ambitious, but it still hinges on multiple breakthroughs, especially around satellite launch cadence and cost, solar power generation, maintaining/servicing hardware at scale, and more. Whether SpaceX can clear those hurdles fast enough to make “compute in space” economically compelling remains an open question.