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Anthropic spent about $1.60 on compute for each dollar of revenue in 2025, leaked prospectus shows
Anthropic spent $7.33 billion on compute against almost $4.6 billion of 2025 revenue, according to the leaked IPO prospectus Reuters obtained. For teams running Claude, that gap and the company's fixed infrastructure deals say more about future prices than the $42 billion headline loss does.
The Product Desk · Product desk
What happened
- Reuters reported that $34 billion of the $42 billion 2025 net loss was an accounting charge on financing that could turn into shares, separate from the cost of running the business.
- About 80 percent of the $518 billion Anthropic plans to spend on cloud, computing and infrastructure obligations sits in deals it cannot cancel, Mashable reported.
- Close to a quarter of Anthropic's 2025 revenue came from just two customers, according to Gizmodo's account of the Reuters report.
- The listing could come as soon as November at a valuation above $2 trillion, more than double the $965 billion Anthropic was valued at in May.
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Why it matters
- cost Compute outran revenue by roughly $2.7 billion in 2025, and that is the gap Claude prices and plan limits would have to close before token sales cover their own compute.
- constraint Because most future infrastructure spending cannot be cancelled, Anthropic cannot trim costs to match a demand slowdown and would have to adjust revenue per customer instead.
- contradiction Thurrott reports an operating loss of about $8 billion while Mashable reports $8.06 billion as operating costs; against $4.6 billion of revenue, those readings imply losses more than twice apart.
Somebody in finance will forward the Reuters story this week with the $42 billion loss highlighted [1]. About 81 percent of that figure is the financing charge [1]. The person who owns the Claude integration can set that part aside and read the compute line instead.
Set against revenue, the $7.33 billion compute and infrastructure bill [5] comes to about $1.60 for every dollar Anthropic billed in 2025 [2]. Revenue grew twelve-fold over the same year [6].
The forward obligations are bigger. The non-cancelable part of the $518 billion plan comes to roughly $414 billion [4], about 90 times 2025 revenue [5]. The reports do not describe any change to Claude pricing. On capacity, the commitments point the other way. They cover cloud, computing and infrastructure obligations the company has already accrued [7], and that compute is what customers consume.
Gizmodo's account of the Reuters report gives the investor pitch: AI will matter more to the economy than industrialization, electrification and the internet did [14]. What many customers actually do is buy without a long-term contract. The prospectus says a large share of users have not signed one, so their payments could stop suddenly [10].
I'd treat the prospectus as a contract question. Anthropic lists the uncommitted customer as its risk, and from the buyer's side that status is leverage. I'd expect a newly public vendor with fixed obligations this large to offer better terms in exchange for commitment. A multiyear deal buys a known price and known capacity. It costs the freedom to move if another model gets cheaper or better.
Two axes sort the exposure. One is whether price and rate limits are written into a contract through next year. The other is whether the workload could move to another model within a quarter, with prompts and evals that already run elsewhere. Written terms and a portable workload: the prospectus changes little. Written terms and a locked-in workload: the exposure starts at the renewal date. No terms and a portable workload: the buyer holds the leverage Anthropic lists as its risk, and a long contract would sell it. No terms and a locked-in workload is the one box where these numbers justify work this quarter, either terms on paper or a second model tested against the team's own evals.
What to watch
- A public S-1 filing that settles whether roughly $8 billion is Anthropic's 2025 operating loss or its operating costs.
- Changes to Claude API prices, rate limits or enterprise commitment minimums before a listing expected in late November or December.
- Whether Anthropic names the two customers behind close to a quarter of 2025 revenue, and whether they are on long-term contracts.