Anthropic's IPO filing: $16.3 billion of revenue, $693 million short of an operating profit
Anthropic's IPO filing shows $16.3 billion of revenue in six months, a $693 million operating loss, and $77 billion of compute financing from Google, Amazon and Broadcom — the numbers under Stratechery's subscriber-only read.
One item cleared the twenty-four hours to 08:00 this morning. Stratechery published an Update at 18:32 on Tuesday. Lenny's Newsletter has posted nothing since Monday's How I AI bundle, which yesterday's digest covered.
The Update asks three questions about a filing made a day earlier. Its body needs a subscription; the document it reads is public and free.
So this edition takes the three questions from the public summary and answers each one from the prospectus itself. Where the prospectus is blank, this edition says so.
AI economics: Anthropic's IPO filing, in three questions
Anthropic S-1, The Cost of Compute, Who Is Paying? — Ben Thompson
Published October 27, 2026, 18:32 Shanghai. Ben Thompson. The summary line is public; the body and audio need Stratechery Plus.
Anthropic, PBC filed Form S-1 with the SEC on October 26, seeking to list on Nasdaq as "ANT." 1 The company says the number of shares and the price range "have not yet been determined." 1
The Update opens the same document in three parts, following the topic markers on his post. 2 His summary line gives the verdict: "the core business is very profitable, but competition may eat all of the profits, even as investors are set up for endless dilution." 3
Three facts let a reader test that sentence.
- Revenue is real, and the operating loss is nearly gone. Revenue reached $16,286 million in the six months to June 30, 2026, against $16,979 million of operating expenses. 4 The operating loss was $693 million.
- Compute is the largest cost. The line labelled compute and infrastructure cost $8,945 million in those six months, or 55% of revenue. 4 For 2025 the same line was $7,326 million.
- The partners supplying compute are paid in stock. Google, Amazon and Broadcom hold note facilities worth $77.0 billion between them. 4 As of June 30, none had been drawn.
The three questions, and what the filing answers
| Question in the item | The filing's answer | Figure |
|---|---|---|
| Anthropic S-1 | Revenue rose 1,300% year over year in the first half of 2026, and the operating loss fell from $2.1 billion to $693 million 4 | $16.3 billion of revenue |
| The cost of compute | Compute is the single largest expense, at 55% of revenue in 2026 and 160% in 2025 4 | $8.9 billion in six months |
| Who is paying? | Three suppliers hold undrawn note facilities that convert into a non-voting share class 4 | $77.0 billion available |
The core business, in one table
Figures are in millions of dollars, from the summary consolidated financial data. 4
| 2023 | 2024 | 2025 | H1 2025 | H1 2026 | |
|---|---|---|---|---|---|
| Revenue | 41 | 386 | 4,585 | 1,163 | 16,286 4 |
| Compute and infrastructure | 433 | 2,522 | 7,326 | 2,334 | 8,945 4 |
| Total operating expenses | 592 | 3,366 | 12,645 | 3,298 | 16,979 4 |
| Operating loss | (551) | (2,980) | (8,060) | (2,135) | (693) 4 |
Revenue multiplied about forty-fold in two and a half years. The compute bill fell from 160% of revenue in 2025 to 55% in 2026.
The $80.7 billion net loss for the half year is mostly bookkeeping. It includes a $72.4 billion non-cash charge from marking convertible notes and SAFEs against a rising valuation. 4
One charge from 2025 matters when comparing years. Anthropic paid $1.5 billion to settle the Bartz copyright class action, approved in July 2026 and listed as its own expense line. 4
What grows the revenue: lower prices
The filing attributes the growth to cheaper tokens on better models. That mechanism matters more than the totals.
Opus 4.5 shipped in November 2025 at a lower price and higher capability. 4 Quarter-over-quarter growth then ran from 48% to 132%.
In September 2026, Fable 5.1 cut the cost of typical workloads by about 25%. 4 Opus 5.5, that same month, cut cost per task about 40% against Opus 5.
Customers answer cheaper intelligence by using more of it. One disclosure carries the catch: models released in the six months to September 30, 2026 produced over 80% of that quarter's revenue. 4
Every generation resets the sale. The customer paying this quarter buys the newest model at the lowest price yet.
Demand is broadening at the same time. About 79% of September-quarter revenue came from outside the top five customers, up from 64% in the March quarter. 4 Those five each reached a record, and more than 11,900 customers now spend $100,000 a year or more.
What compute costs
Anthropic buys compute as one pool and spreads work across it. The filing names four chip families in that pool: AWS Trainium, Google TPUs, NVIDIA GPUs and AMD GPUs. 4
It also describes Anthropic Direct, the company's own commissioned data-centre capacity. That route commits it to buildings separately from the accelerators inside them.
The commitments carry the risk. The filing points to "minimum purchase commitments, take-or-pay provisions, and other terms that obligate us to pay for resources regardless of actual utilization." 4 Take-or-pay means the bill arrives either way.
The total is quoted as "an aggregate committed spend of more than $[blank]." 4 Part of it falls before the end of 2030, and the rest between 2031 and 2045. The figure itself stays blank.
Anthropic's own risk section names the mismatch. Revenue is consumption-based with no long-term contract. Compute commitments run for years.
Who is paying
This is the question the paywall hides, and the filing answers it in a table. 4
| Counterparty | Facility | Available | Terms |
|---|---|---|---|
| 2026 note purchase agreement | $20.0 billion | Convertible notes; the amount drops by up to $10.0 billion if Google buys Class N shares at the offering price 4 | |
| Amazon | 2026 note purchase agreement | $15.0 billion | Notes settled in Class N at the 30-day trailing average price as compute milestones are met, in $5.0 billion steps, up to an ownership cap 4 |
| Broadcom | Infrastructure Partner 2026 note purchase agreement | $42.0 billion | Notes at 9.00% a year, used for quarterly rent on the 2026 equipment lease, assignable to a designated financial partner 4 |
Three groups pay, in three currencies. Enterprises pay for tokens, at prices that keep falling. The three partners pay for capacity and take stock without votes. Public investors pay in dilution.
A fourth arrangement sits underneath. Claude sells on AWS, Google Cloud and Azure under a joint go-to-market model. 4 Anthropic holds the customer contract and pays each cloud a fee.
Why the dilution is structural
Three mechanisms create shares, and two of them scale with success.
First, the notes above: $77.0 billion of facilities converting into Class N stock as capacity arrives. 4 Class N carries no votes and converts to Class A once sold to an outsider.
Second, the Anthropic Public Benefit Fund, a wholly owned subsidiary holding 846,840,960 Class N shares. That is 5% of fully diluted stock as of June 30, 2026. 4 The board may add up to 2% of shares each time the price rises 50% above its last milestone, starting at the offering price. 5
Success feeds the ratchet. The higher the stock goes, the more stock gets issued.
Third, the offering itself. Anthropic sells shares while selling stockholders sell alongside; their proceeds stay with them. 4
Control sits outside all of it. One Class F share, held by a company owned by the co-founders, carries 50.1% of voting power. 4 The Long-Term Benefit Trust elects four of seven directors, and Nasdaq treats the company as controlled.
What the filing leaves blank
A draft prospectus is worth reading for its gaps as much as its figures.
- The offering: share count, price range, net proceeds and the underwriters' option all stay blank. 1
- The compute commitment: the sentence that totals it leaves the figure blank, as does the split before 2030 and the amount due within a year. 4
- The September quarter: growth rates appear, and the revenue figure stays blank. 4
- The ownership cap: Amazon's cap decides how much of its notes converts, and the percentage is missing. 4
One figure can be derived. With roughly 5,300 employees and trailing revenue per employee above $6.6 million, trailing revenue works out to something over $35 billion. 4
What it changes for you
- If you buy tokens: expect unit costs to fall and volume to rise. A 40% cut per generation looks like the pattern, so budget by workload first.
- If you build on Claude: plan the migration. Most of last quarter's revenue came from models released in the six months before it, so whatever you ship against dates quickly.
- If you sell into enterprises: the route runs through AWS, Google Cloud and Azure, with Anthropic holding the contract. Accenture, Deloitte, KPMG and PwC are the other named channel. 4
- If you are weighing the business: the operating line is near breakeven, and partners taking stock are funding the compute. The number to watch is the price of the next model.
Where to start
- Subscriber: read the Update, then check it against the two tables above. 3
- Not a subscriber: the filing's own order works. Read "Strengths of Our Financial Model," then "Contractual Obligations" and "Note Purchase Agreements." 4
- Five minutes: the three numbered points, then the table of the three facilities.
The argument in the paywalled body can be checked against the document it argues about. The figures above are what it has to work with.
References
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- 5Investing in the public benefit — Anthropic
anthropic.com
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