SpaceX’s draft prospectus filed with the U.S. Securities and Exchange Commission provides the first public look at the financial health of Elon Musk’s AI arm, xAI. The document shows that xAI’s 2025 income statement recorded $3.2 billion in revenue but a staggering $6.4 billion operating loss. The loss more than quadrupled the $1.56 billion shortfall the company posted in 2024, highlighting a widening gap between earnings and spending as the unit pushes its flagship chatbot, Grok, toward a new scale.
Revenue streams for xAI remain narrowly focused. The filing lists $465 million in “AI solutions and infrastructure” revenue, of which $365 million came from subscriptions to X and Grok, and $88 million from data licensing. Advertising contributed an additional $116 million. Even with these inflows, the unit’s cost base has ballooned. Capital expenditures on AI infrastructure rose from $12.7 billion in 2025 to $7.7 billion in the first quarter of 2026 alone, implying an annualized cap‑ex run rate of roughly $30.8 billion – more than double the previous year’s level.
To support the aggressive model scaling, xAI has built two data‑center complexes, dubbed Colossus and Colossus II, which together supply about one gigawatt of compute power. Both facilities were brought online in record time—122 days for the first and 91 days for the second—and are dedicated to training and inference for Grok. The filing argues that owning this hardware allows SpaceX to “train and iterate frontier models at lower cost and higher velocity,” a claim that will be tested as the company targets “multiple trillions of parameters” for its next‑generation AI.
User engagement paints a mixed picture. SpaceX reports 117 million monthly active users (MAUs) for Grok AI features as of March 2026, out of a combined 550 million MAUs across Grok and the broader X platform. Roughly one‑fifth of the ecosystem’s audience is actively using the AI, suggesting that while the technology has traction, it has not yet reached mass adoption. The filing notes that the next step will involve deploying orbital AI compute satellites, a concept Musk has touted as a cheaper alternative to terrestrial data centers. The timeline for that rollout is set for as early as 2028, but the plan remains speculative.
Competitors are moving quickly, too. Anthropic, a rival AI firm and a customer of xAI, reportedly expects a 130 percent revenue surge to $10.9 billion in the second quarter, marking its first operating profit. OpenAI is also preparing for a public listing in 2026. Against that backdrop, SpaceX’s planned IPO could become one of the largest ever, with a projected valuation of $1.75 trillion. The filing underscores the ambition behind the merger of xAI with SpaceX, a deal completed in February that placed the AI unit under the same corporate umbrella as the rocket and satellite business.
Investors will be watching how the company balances the steep capital outlays with the modest user base. The filing’s “use of proceeds” section earmarks additional funding for expanding AI compute infrastructure, signaling that the current spend trajectory is unlikely to slow. Musk’s vision of a vertically integrated AI stack—spanning data centers, satellite‑based compute, and the Grok product—remains central to the growth story, but it also raises questions about near‑term profitability.
In summary, the SEC filing reveals a company in the throes of rapid expansion, grappling with massive losses while betting on future scale and technology breakthroughs. Whether the market will reward the gamble with a multitrillion‑dollar valuation remains to be seen, but the numbers on the page make clear that xAI’s path forward will be funded by significant, ongoing investment.
This article was written with the assistance of AI.
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