Anthropic's IPO prospectus shows 518 billion dollars of future compute obligations against 4.6 billion dollars of 2025 revenue

On 28 September Reuters reported the financial details of Anthropic's IPO prospectus, a document the company has filed with regulators confidentially and not yet made public. TechCrunch reported that the Financial Times had also reviewed it. Anthropic declined to comment. So this is not yet a public filing, and the numbers could change before one appears. But it is the first time a frontier lab's full-year accounts have been described in detail from the document itself rather than from people familiar with them.

Start with revenue. According to Reuters, revenue grew 12-fold in 2025 to nearly 4.6 billion dollars. Fortune, citing the same document, puts the growth at 1,088 percent. That is realized revenue for a full year, not an annualized run rate and not a projection, which is exactly the kind of figure this map has been short of.

Now costs. Reuters reports that Anthropic spent 7.33 billion dollars on compute and infrastructure in 2025, three times the 2024 figure, and more than half of 12.65 billion dollars in total operating expenses. Compute alone cost about 1.6 times what the company took in. The operating loss, excluding writedowns, was more than 8 billion dollars. The headline net loss was about 42 billion dollars, but Reuters says roughly 34 billion of that was an accounting charge reflecting a rise in the estimated value of financing, not cash spent on running the business.

Then the number that matters most for this map. Reuters reports that Anthropic plans to spend 518 billion dollars on cloud, computing and infrastructure obligations in coming years. TechCrunch notes that Anthropic has signed compute deals this year with Google, SpaceX and Nscale, among others. Fortune adds that Amazon and Google, both investors, supply much of the cloud capacity Claude runs on. At the end of 2025 the company had 20.28 billion dollars in cash, cash equivalents and short-term investments.

Put those three figures side by side: 4.6 billion dollars of revenue last year, 20 billion dollars in the bank, and 518 billion dollars of future obligations. The gap is not a sign that something has gone wrong. Labs sign long compute contracts because capacity has to be reserved years ahead, and revenue has been growing faster than almost anyone expected. But it answers, in one document, part of the question one of our nine conditions asks: who pays for the build-out. A large share of the demand that cloud providers, chip makers and data center developers are building for rests on commitments like these, made by a company whose revenue has to keep compounding to meet them.

Two more details from the risk factors are worth reading closely. Reuters reports that nearly a quarter of Anthropic's 2025 revenue came from two customers, and that many of its largest clients are not locked into long-term contracts. Obligations on one side are long and fixed. Revenue on the other side is concentrated and, in part, cancellable. That mismatch is the ordinary shape of a fast-growing company. It is also the part of the story that deserves watching.

On timing, Reuters says the listing is likely to come after the US midterm elections in November, and that the offering could value Anthropic at more than 2 trillion dollars. That is consistent with the November timing already on the map from the Wall Street Journal's September report, so it is not a new delay.

Now the case against reading too much into this. The document is a draft that has not been made public, and Anthropic has not confirmed any figure. The 2025 numbers are a year old, and Anthropic's revenue has since moved much faster: the Financial Times reported second-quarter 2026 revenue of 11.5 billion dollars and a second straight quarter of adjusted operating profit, but those figures were reported before, in August, and it is not clear they come from the prospectus. Obligations are commitments over many years, not bills due now, and some may be cancellable or tied to capacity not yet built. And a spending plan tells us about demand for suppliers, not about profit for the company making it.

On the map, Anthropic moves from gray to amber. The signal is meaningful and mixed: strong realized growth on one side, a very large fixed commitment set against concentrated revenue on the other. Nothing turns red. The infrastructure-economics condition stays amber and adds a data point against. The lab-revenue condition does not change, because an annual 2025 figure is not the run rate that condition measures.

What would change the picture is observable. A public S-1 on the SEC's website, with audited numbers and the full schedule of obligations. A disclosed 2026 run rate or monthly revenue figure. The obligations broken down by counterparty. Any change to the timing beyond November, or a withdrawal.

The short version: the revenue is real and growing fast. The bill is far bigger.