Anthropic is SpaceX's largest single customer and accounted for more than a third of the company's third quarter revenue, Bloomberg reported on October 29, 2026, citing a person familiar with the matter. The report was summarized by The Next Web and Seeking Alpha. (The Next Web (opens in a new tab); Seeking Alpha (opens in a new tab))
In a regulatory filing the previous week, SpaceX disclosed that a client it identified only as Customer B produced about 34.5% of its quarterly revenue. Bloomberg identified that client as Anthropic, which would make the AI company a bigger source of income for SpaceX than the US government, long its main customer. (The Next Web (opens in a new tab); Seeking Alpha (opens in a new tab))
Anthropic declined to comment and SpaceX did not respond to Bloomberg, according to The Next Web. ShiftDelete.Net noted that neither company has publicly confirmed that Anthropic is Customer B. (The Next Web (opens in a new tab); ShiftDelete.Net (opens in a new tab))
What Anthropic is buying
Anthropic rents computing power at SpaceX data centers in Memphis, Tennessee. The capacity comes from SpaceX's AI unit, now called Super Intelligence, which sells computing power to outside customers after SpaceX took over Elon Musk's xAI business, Seeking Alpha reported. (The Next Web (opens in a new tab); Seeking Alpha (opens in a new tab))
Anthropic's own IPO filing describes computing agreements with SpaceX worth up to $120.5 billion through 2029. Payments could reach about $3.1 billion a month starting in December, according to The Next Web and Seeking Alpha. ShiftDelete.Net reported that the initial contract periods end in January and March 2027, after which Anthropic can cancel with 90 days' notice. (The Next Web (opens in a new tab); Seeking Alpha (opens in a new tab); ShiftDelete.Net (opens in a new tab))
SpaceX's growing reliance on AI
SpaceX's quarterly filing, submitted October 22, reported third quarter revenue of $14.575 billion, up from $5.576 billion a year earlier, and net income of $4.404 billion, ShiftDelete.Net reported. All of Customer B's revenue falls in the AI segment, which brought in $7.56 billion. A second client, Customer A, accounted for 16.6% of revenue. (ShiftDelete.Net (opens in a new tab))
The AI unit was profitable for the first time in the third quarter, according to The Next Web and Seeking Alpha. SpaceX also rents computing power to Google, which pays about $920 million a month, The Next Web reported. Seeking Alpha said Musk expects NASA, historically a major customer, to contribute less than 5% of revenue this year. (The Next Web (opens in a new tab); Seeking Alpha (opens in a new tab))
Musk has argued that SpaceX's Starlink and launch businesses make it safer than neoclouds, the companies that rent out AI computing, as lenders become more cautious about the sector. Seeking Alpha noted that the concentration of revenue in one client raises risk for investors. (The Next Web (opens in a new tab); Seeking Alpha (opens in a new tab))
The report shows how closely two companies that compete in AI models are now tied together through infrastructure. For SpaceX, a single AI lab supplying about a third of revenue is a strong growth driver and a concentration risk at the same time, since the contracts can be canceled with notice in 2027. For Anthropic, the arrangement secures large amounts of computing power from a company run by Elon Musk, whose former xAI business is now part of SpaceX.
