The contract beyond the deadlines
Anthropic disclosed, through the update to Form S-1/A filed on November 10 with the U.S. Securities and Exchange Commission, that it had signed and repeatedly amended several agreements between May and October 2026 for the lease of computing power with SpaceX.AI LLC, a company in the SpaceX group. The arrangement concerns Nvidia GPUs, has a formal expiry in 2029 and provides for a total spending cap of about $1,205 billion. According to the document, the supply should be completed by December 2026, when Anthropic's monthly cost would rise to about $31 billion.
The figure does not, however, constitute an irrevocable commitment: the initial irrevocability clauses of the two contracts expire in January and March 2027 respectively, after which both parties may terminate the agreement with 90 days' written notice. This element is central to interpreting the rumors circulating in recent days about a possible early stop.
The rumors and Musk's response
The news of a possible early exit began on November 11 with a post by user @jukan05, who circulated a summary of a meeting between Anthropic and sales analysts, during which the company reportedly said that the contract with SpaceX would not continue beyond mid-2027. Some users, however, noted that the document circulated is second-hand and that Anthropic's response could refer to a hypothetical scenario, namely what the company would do if demand for AI computing capacity fell and lease costs remained above market values.
Elon Musk weighed in on this account with a message on X: SpaceX, he wrote, would be ready to take back the leased capacity without problems, but in his view the reality could be the opposite of the suppositions circulating. This is a statement, not a documentary fact. At present neither party has announced a decision to end the relationship.
The industrial plan behind the leased capacity
The dossier filed by SpaceX helps explain why the matter carries weight beyond the individual contract: the capacity supplied to Anthropic is based on the Colossus and Colossus II data centers and involves about 325,000 Nvidia GPUs. The company said it wanted to maintain flexibility in allocating these resources, so that it could lease them to third parties or bring them back in-house for its own AI models, such as Grok, intended for both training and inference.
If Anthropic decided to withdraw or not to renew, SpaceX could therefore reallocate the capacity to external customers or internal activities. It remains to be verified whether and when either party will communicate a formal decision, and what weight any decline in computing demand will have on renewal beyond the 2027 deadlines.
