❯ Bloomberg identifies Anthropic as SpaceX’s largest customer, supplying over a third of revenue

A reported identity for Customer BBloomberg reported on October 29, citing a person familiar with the matter, that Anthropic is Customer B in SpaceX’s quarterly filing—the client responsible for 34.5% of group revenue. The filing does not name the customer; the identification comes from Bloomberg’s source rather than an explicit company confirmation.

Compute changes the revenue mixSpaceX’s filing reports $14.575 billion of quarterly group revenue and $7.56 billion in its Super Intelligence segment. All Customer B revenue belongs to that AI segment. Applying the disclosed percentage to group revenue implies approximately $5.03 billion from the client, or roughly two-thirds of the AI segment’s revenue.

Future spending has conditionsAccording to The Next Web’s account of Bloomberg’s reporting and prospectus disclosures, Anthropic rents compute at SpaceX’s Memphis facilities. Contracts extending through 2029 allow spending of up to $120.5 billion, with approximately $3.1 billion a month once all capacity is delivered, expected in December. Termination provisions allow 90 days’ notice after specified dates from early 2027, making actual revenue dependent on capacity delivery and the contracts remaining in force.

A rival becomes a compute customerSpaceX runs its own AI business while renting computing resources to other model developers. Anthropic gains capacity for expanding Claude services. SpaceX gains a contract large enough to reshape its revenue mix, alongside greater dependence on a small number of customers and their renewal decisions.

▮ SIGNALFrontier labs’ compute purchases can now reshape major technology companies’ revenue, making contract duration and termination rights important to interpreting that growth.