
SpaceX is in talks with the U.S. Department of Defense over a multibillion-dollar contract to provide computing infrastructure for Pentagon AI operations, though the deal remains unconfirmed and could still fall apart. The potential contract is significant because SpaceX's AI segment—formed through its February 2026 acquisition of xAI—is burning cash, with xAI generating a $6.4 billion(約1兆円) operating loss in 2025 and SpaceX posting a net loss of about $4.9 billion(約7800億円) for the year. A Pentagon customer could help offset those losses and create a durable, long-term revenue stream, though SpaceX's current valuation—trading at more than 80 times sales—remains a concern for investors.
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SpaceX is in discussions with the Department of Defense over a multibillion-dollar computing contract that would let the Pentagon run AI models on SpaceX's data centers, according to reporting by The Wall Street Journal. The deal remains tentative and has not been confirmed by either party.
Why it matters
SpaceX acquired xAI in early February 2026, valuing the combined entity at about $1.6 trillion(約260兆円), with the idea that AI will become SpaceX's major growth engine. However, xAI generated an operating loss of about $6.4 billion(約1兆円) in 2025, and SpaceX posted a net loss of about $4.9 billion(約7800億円) for the year. A Pentagon contract could help offset those losses and provide a durable, long-term revenue stream with high switching costs that would be difficult to abandon.
What to watch
The deal follows similar agreements SpaceX has struck with Alphabet and Anthropic. SpaceX claims AI will unlock a $26.5 trillion(約4200兆円) market opportunity, compared with about $2 trillion(約320兆円) for its other two businesses (rockets and Starlink satellite internet). The stock currently trades at more than 80 times sales and is down more than 40% from its all-time high since its mid-June market debut.
SpaceX is reportedly in talks with the Department of Defense over a multibillion-dollar computing contract that would provide the Pentagon access to SpaceX's data centers for running AI models, according to The Wall Street Journal. While neither the Pentagon nor SpaceX has confirmed the arrangement, and the deal could still fail, the development highlights a crucial shift in the company's strategic focus. Until February 2026, SpaceX was principally known for rocket launches and Starlink, its satellite-based internet service. That changed with SpaceX's acquisition of xAI in early February 2026, which valued the combined entity at about $1.6 trillion(約260兆円) and positioned AI as SpaceX's future growth engine.
The financial realities, however, are sobering. xAI generated an operating loss of about $6.4 billion(約1兆円) in 2025 alone. Even accounting for offset revenue from SpaceX's other operations, the company posted a net loss of about $4.9 billion(約7800億円) for the full year. In its pre-IPO roadside presentation, SpaceX projected that AI would unlock a $26.5 trillion(約4200兆円) market opportunity, dwarfing the estimated $2 trillion(約320兆円) opportunity across its rocket-launch and satellite-internet businesses—a framing meant to justify the massive investment despite current losses.
A Pentagon contract could materially change that equation. If the Department of Defense becomes a multibillion-dollar customer, the AI segment could begin offsetting its losses and moving the combined company toward profitability. Critically, government contracts involving sensitive or classified information create high switching costs: once SpaceX is approved and integrated into the Pentagon's infrastructure, exiting would be neither simple nor cheap. This structural characteristic could transform a defense contract into a durable, long-term revenue stream that grows in value if the agency expands its computing purchases over time. SpaceX has already struck similar deals with Alphabet and Anthropic, positioning itself within an exclusive group of cloud-computing providers supporting Pentagon AI operations.
For investors, however, valuation remains a significant concern. SpaceX has traded at a premium since its mid-June market debut, and even though the stock is currently down more than 40% from its all-time high, it still trades at more than 80 times sales. The bull case for SpaceX rests on the eventual success of ambitious projects—lunar settlements, Mars missions, orbital data centers—many of which remain speculative. While a Pentagon AI contract could provide meaningful validation and cash flow, SpaceX investors are being asked to believe in a multi-decade transformation story at a valuation that has little margin for error.
SpaceX's strategic positioning around artificial intelligence has shifted dramatically since the company's acquisition of xAI in early February 2026. The deal unified two of Elon Musk's enterprises and provided xAI with a larger capital base to scale faster. However, the AI segment is currently a significant drain on SpaceX's finances: xAI alone lost $6.4 billion(約1兆円) operationally in 2025, pulling the combined company into a net loss of $4.9 billion(約7800億円) for the year. In its pre-IPO roadside presentation, SpaceX framed AI as the long-term growth engine, projecting a $26.5 trillion(約4200兆円) market opportunity—vastly larger than the $2 trillion(約320兆円) opportunity across its core rocket-launch and Starlink satellite-internet businesses. This framing positions a Pentagon contract not merely as incremental revenue but as potential validation that the AI business can eventually offset its current losses and become profitable.
The Department of Defense relationship carries particular weight because of its unique characteristics. Government contracts, especially those involving potentially sensitive or classified workloads, create high switching costs once a vendor is approved and integrated. This structural stickiness could make Pentagon revenue more durable and predictable than typical commercial cloud-computing revenue, offering SpaceX a relatively stable foundation upon which to scale and potentially grow AI margins over time. SpaceX has already inked similar deals with Alphabet and Anthropic, suggesting a pattern of positioning itself as a trusted infrastructure provider for AI workloads at scale.
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