Artificial Intelligence

Anthropic Reportedly Told Analysts It Won't Extend Its SpaceX Compute Contract Past Mid-2027

The claim comes from secondhand sell-side meeting notes posted on X and has not been confirmed by either company; Anthropic's IPO filing already lets either side cancel on 90 days' notice after early 2027.

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Anthropic Reportedly Told Analysts It Won't Extend Its SpaceX Compute Contract Past Mid-2027
Lucent_Designs_dinoson20 / Pixabay — Pixabay Content License

Macro of fiber-optic strands with amber points of light

Illustrative stock photo: fiber-optic strands carrying light. Not Anthropic or SpaceX infrastructure.

Anthropic told sell-side analysts it will not extend its SpaceX compute contract beyond the middle of 2027, according to meeting notes posted on X on Wednesday by Jukan (@jukan05). His summary of the remark reads: "The contract with SpaceX will not be extended beyond the middle of next year."

Neither Anthropic nor SpaceX has confirmed the remarks, according to TeslaNorth. Jukan has said he did not attend the meeting himself, writing, "I didn’t attend the meeting myself, so it’s hard for me to answer that." DailyMech could not verify the notes, and the reported plan is not an announced decision.

At a glance

Item Detail Source/status
Claim Contract "will not be extended beyond the middle of next year" Jukan's X post; unverified
Confirmation Neither company has confirmed TeslaNorth
Poster's caveat Jukan did not attend the meeting Jukan on X
Contract ceiling Up to $120.5 billion over terms into 2029 Anthropic S-1/A
Exit terms Either side may cancel on 90 days' notice after periods ending Jan. and Mar. 2027 Anthropic S-1/A
Revenue weight "Customer B" was about 34.5% of SpaceX's Q3 revenue SpaceX filing, via The Next Web
Customer identity Bloomberg says Customer B is Anthropic Unconfirmed report

What the filing already allows

Anthropic's amended IPO filing, Amendment No. 2 to its Form S-1, filed with the SEC on Nov. 10, describes agreements entered into and amended between May and October 2026 with SpaceX.AI LLC, formerly X.AI LLC, a wholly owned SpaceX subsidiary, for compute powered by Nvidia GPUs.

The filing says Anthropic "agreed to spend an aggregate of up to $120.5 billion over terms extending into 2029, consisting of approximately $3.1 billion in the aggregate per month once all capacity has been delivered, which we expect in December 2026."

It also says: "Following initial non-cancelable periods ending in January 2027 and March 2027 under the respective agreements, each agreement may be cancelled by either party upon 90 days’ advance written notice."

The $120.5 billion figure is a ceiling, not guaranteed spending. A decision not to extend would fit flexibility already disclosed in the filing. That flexibility does not confirm Jukan's account or show that either side has given notice.

Why it matters for SpaceX

SpaceX's third-quarter filing said a single client labeled "Customer B," a buyer of computing power from its AI unit, now called Super Intelligence, accounted for about 34.5% of quarterly revenue, according to The Next Web's Oct. 29 report.

Bloomberg reported Oct. 29, citing a person familiar with the matter, that Customer B is Anthropic. Anthropic declined to comment and SpaceX did not respond, Bloomberg said, according to The Next Web. Neither company has confirmed the identification, and it does not by itself confirm the reported non-extension remarks.

TeslaNorth reports that SpaceX has said these contracts include early outs so it can take capacity back for its own Grok models.

How Musk responded, and what's unverified

Elon Musk, replying on X to another user's post about the notes rather than to Jukan, wrote: "We would be happy to take the compute back. No problem. But I think the opposite is going to happen." He did not say what he meant by "the opposite," and his reply does not establish whether the meeting summary is accurate.

TeslaNorth identifies Jukan as a semiconductor analyst at Citrini Research and says there is no independent public record of how often such notes prove right. It adds that "these particular comments cannot be independently verified."

Jukan later offered his own interpretation: "To be more precise, my takeaway was that they’d underestimated demand and had to rent compute from SpaceX. Now they’d rather book more capacity than they expect to need so they don’t end up in the same position again."

He also corrected another item in the notes, saying a reported $10 billion training figure covered the entire Claude 5.5 model family, not Opus 5.5 alone. Anthropic has not disclosed a training cost in its public materials on the 5.5 models, TeslaNorth reported.

What to watch

Any statement from Anthropic or SpaceX, IPO roadshow disclosures, later filings updating the SpaceX.AI terms, and whether either side gives notice after the early-2027 non-cancelable periods.

How we reported this

DailyMech read Jukan's post, his correction and replies, and Musk's reply on X; TeslaNorth's report and The Next Web's Oct. 29 report in full; and the relevant S-1/A passage via a sec.gov search excerpt. The full filing and SpaceX's 10-Q were not read, and Bloomberg's report was read only in an excerpt. DailyMech did not see the meeting notes and contacted no one.

Published and fact-checked November 11, 2026.

Sources

DailyMech used AI tools to help research and draft this article; it was fact-checked by our editors.

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