SpaceX spent $15.8 billion on artificial intelligence infrastructure in the second quarter of 2026, doubling its capex on AI from the prior quarter, according to an August 4 SEC filing. The Elon Musk-led company said it does not plan to reduce the spending pace.
The capex doubling marks a sharp acceleration in SpaceX's compute buildout. The company's total quarterly revenue reached $7.8 billion, meaning AI infrastructure capex alone consumed over two-thirds of quarterly revenue. SpaceX's AI-related revenues jumped 247 percent year-over-year, the company reported, though it did not break out whether those revenues flow from the company's own models, infrastructure services to third parties, or both.
SpaceX has become a major player in the infrastructure race for large language model training and deployment. The company operates Starshield, a suite of AI and computing services, and has built out significant GPU clusters to support training workloads. Musk has pushed for SpaceX to compete directly in the AI compute market as demand from foundation model builders has strained the supply of training capacity globally.
The Q2 capex figure contrasts with traditional aerospace economics, where capital spending typically tracks launch rate and vehicle production. SpaceX's pivot toward sustained, scaled AI investment represents a structural shift in how the company allocates cash. One investor noted the stock declined on the earnings announcement despite revenue beating expectations by $900 million, a reaction tied directly to the announced capex trajectory.
The company's AI spending now exceeds the annual capex budgets of many Fortune 500 industrial manufacturers. At $15.8 billion per quarter, SpaceX's AI infrastructure run rate reached $63.2 billion annualized in Q2 alone. Comparable figures from other infrastructure builders remain limited; most AI capex disclosures come from hyperscalers like OpenAI and Anthropic, which report total spend but not quarterly breakouts in the same format.
SpaceX has not committed to moderating the pace despite the market reaction. The company controls significant launch capacity through Falcon 9 and Starship, which reduces its cost to deploy and refresh compute hardware at scale. Whether the compute revenues can sustain margins under this capex model depends on pricing power and demand in a market where compute supply is rapidly expanding across multiple competitors.
The document to watch is SpaceX's next quarterly filing in November, which will show whether Q3 capex continued to double or stabilized at Q2 levels.
