300 pages for investors. Which five lines tell you what a token costs to serve?
Anthropic has filed an S-1, the registration statement a company files before selling shares to the public, and amended it on 2 November 2026. The numbers that matter for anyone who buys or builds on tokens sit in about five places: revenue, cost of revenue, compute spend, the operating loss, and compute commitments. This post shows where each one is and what it does and does not say.
I read the filing text itself, not the news about it. This is not investment advice, and I have no view on the price. The offering price range is blank in this amendment. (Anthropic S-1/A, SEC EDGAR)
1️⃣ Revenue, and How It Is Metered
Start with the results table in the management discussion, around page 150. Revenue was $41 million in 2023, $386 million in 2024 and $4,585 million in 2025. For the nine months to 30 September 2026 it was $33,242 million. That last figure is unaudited.
The more useful line is on page 141. The company says its main revenue model is “pay-for-intelligence”: customers pay for usage, “metered in tokens and priced according to the model selected.” In the notes, revenue is recognised “based on the quantity of tokens consumed.”
So tokens are the unit of sale. In the first nine months of 2026, that consumption revenue was $26.3 billion, or 79% of the total. Subscriptions were $6.9 billion, or 21%.
2️⃣ Cost of Revenue: The “Cost to Serve” Line
Now the line most people hunt for. In the notes to the financial statements (page F-40, “Supplemental Operating Expense Information”), cost of revenue was $4,812 million for the nine months to September 2026. A footnote says substantially all of it is “compute and infrastructure costs associated with customer-serving workloads.”
That is the closest thing in the filing to a cost to serve.
📌 Real-world case: Here is a rough ratio, and it is my arithmetic, not the filing’s. Take revenue less cost of revenue, divided by revenue. For the nine months of 2026 that is about 85.5% ($28,430 million out of $33,242 million). For 2025 it is about 39.5%. For 2024, cost of revenue ($752 million) was higher than revenue ($386 million).
Please treat that ratio carefully. The filing does not present a gross margin. The company says it changed how it presents expenses, and cost of revenue and gross profit are no longer separate lines in the statements of operations. Compute used to give people free access sits in sales and marketing, and compute used to build models sits in research and development. So this is a rough cost-to-serve ratio, not a margin you could compare with another company’s.
3️⃣ Compute and Infrastructure: The Big Bucket
The same results table splits costs by their nature. Compute and infrastructure was $18,808 million in the nine months to September 2026, against $7,326 million for all of 2025. Against revenue that is about 57% for the nine months, and about 160% in 2025. (Those percentages are mine.)
Most of that compute is not serving customers. Research and development, which is mainly compute for model development, was $19,240 million in the same nine months. By these lines, the cost of serving customers is a smaller slice of the compute the business consumes than the cost of building the next models.
For a buyer, that is the thing to remember. A token price has to pay for serving the token, and also helps pay for the next model.
4️⃣ The Operating Loss Is Small. The Net Loss Is Huge.
Two numbers in the same table look as if they come from different companies. The operating loss for the nine months of 2026 was $1,260 million, or about 3.8% of revenue. The net loss was $104,039 million.
The gap is mostly not about running the business. The filing says the net loss includes a $94,324 million change in the fair value of convertible notes, derivative liabilities and SAFEs, “primarily driven by an increase in the fair value of our outstanding convertible promissory notes resulting from an increase in our enterprise valuation.” In plain words, the notes are worth more on paper because the company is valued higher, and accounting counts that as a loss.
That is why headlines about profit and loss can disagree. They may be reading different lines. The remainder of the gap includes $10,397 million of “other income (expense), net” that I have not looked into, so I will not explain it.
5️⃣ Compute Commitments
The last line is in the management discussion on page 140, and again in the risk factors. As of and after 30 September 2026, the company has purchase commitments and lease agreements, including leases not yet started, with aggregate committed spend of approximately $895.4 billion. About $447.5 billion is expected before 31 December 2030, and substantially all of the rest between 2031 and 2045. About $69.8 billion falls due in the 12 months after 30 September 2026.
A commitment is not money spent. The filing also says some of its arrangements include “take-or-pay” terms, which means paying whether or not the capacity is used. Seedhi baat: this number shows how much the company has promised to buy, not what it has earned.
🪙 Token Truth
Revenue per token is a price. Cost per token is a promise.
The filing tells you what customers pay, in tokens, by model. It does not, in what I read, tell you how many tokens were served in total. The word “tokens” shows up in definitions and revenue recognition, but I found no total. Without that, no one can divide the cost line by the token count and call the result the cost of a token.
Toh phir, every “cost per token” you read in the coming weeks is somebody’s estimate. (For more on tokens as a number Wall Street watches, see Episode 6, The Quadrillion Question, and for the basics, Episode 1 of The Token Diaries.)
🚫 What the Filing Does Not Tell You
- Tokens served. I did not find a total.
- Run-Rate Revenue as of 31 October. The company defines it as annualised consumption fees for a trailing 28 days plus subscription fees times twelve. The value is blank in this amendment, so I have not used any run-rate figure.
- A cost per token. See above.
Two more things are worth knowing. Revenue sold through cloud marketplaces was about 47% of the total in 2025 and 44% in the nine months of 2026, and the platforms remit it net of fees. And the company says its Opus 5.5 model reduced customer costs per task by approximately 40% compared with Opus 5. That is a company claim; I have not tested it.
🔎 How to Read an S-1 in Fifteen Minutes
- Find the definitions first. Tokens, Run-Rate Revenue and Net Revenue Retention are all company-defined.
- Go to the results table in the management discussion and read the operating loss before the net loss.
- Open the notes and look for the table that splits expenses by function. That is where cost of revenue lives.
- Search for commitments, and note which are due in the next 12 months.
- Read the risk factor on operating metrics. It tells you how much weight the company puts on its own numbers.
Fifteen minutes will not make you an analyst. It will tell you which numbers the company chose to define for you.
This filing can change. This is Amendment No. 1, and the price range is still empty. Check for a newer amendment before you rely on anything here.
If you could ask Anthropic for one more number in that filing, which would you pick?
📚 References
- Anthropic, PBC, Form S-1/A, Amendment No. 1, filed 2 Nov 2026 (SEC file no. 333-299633), read 7 Nov 2026. Sections used: definitions; management’s discussion (pages 140, 141 and 150); risk factors (net losses, page 66); notes to the financial statements (page F-40)