Anthropic IPO prospectus: what the leaked numbers mean
A draft Anthropic IPO prospectus, per press reports, shows $4.6 billion in 2025 revenue and an $8 billion operating loss. What each number means for you.
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A draft of the Anthropic IPO prospectus has leaked, and it shows a company whose revenue grew about twelvefold in 2025 while it lost more than $8 billion running the business. Reuters saw the document, and TechCrunch and Fortune reported its figures on September 28 and 29, 2026. Here is what each number means in plain terms, and why the $2 trillion valuation in the headlines is a target, not a price.
Key takeaways
- Everything here comes from a reported draft. No Anthropic prospectus is public on the SEC's EDGAR system, and the figures are not confirmed by Anthropic as of September 29, 2026. The company declined to comment to Reuters.
- Revenue: nearly $4.6 billion in 2025, up about twelvefold, and $11.5 billion in the second quarter of 2026 alone, according to the reported document.
- Losses: an operating loss of just over $8 billion in 2025. The $42 billion net loss is mostly an accounting charge, about $34 billion, not cash out the door.
- Commitments: $518 billion planned for cloud, computing and infrastructure in the coming years, against about $20 billion in cash at the end of 2025.
- Valuation: "more than $2 trillion" is the reported target for the listing. The share price and share count have not been set.
Where the Anthropic IPO prospectus stands
On June 1, 2026, Anthropic announced that it had "confidentially submitted a draft registration statement on Form S-1" to the Securities and Exchange Commission. An S-1 is the document a company files before it sells shares to the public: its finances, its business and the risks an investor takes on. A confidential draft lets the SEC review it before anyone else reads it. The same announcement said "the number of shares to be offered and the price have not yet been set."
That draft is what leaked. Reuters says it saw the prospectus, and its exclusive on the numbers is the source most outlets are working from. As of September 29, a search of the SEC's EDGAR full-text search turns up no public Anthropic S-1. Fortune describes the document as "a draft." Drafts change during SEC review, so treat every figure below as the reported version, not the final one.
Reuters reports the listing will be on Nasdaq and is likely to come after the November US midterm elections. Anthropic has not announced a date.
How fast Anthropic revenue is growing
Reuters reports 2025 revenue of "nearly $4.6 billion," twelve times the year before. Capital Brief, working from the same Reuters reporting, gives the unrounded figures: $4.59 billion in 2025 against $386 million in 2024.
This year is steeper. TechCrunch says the document shows $11.5 billion in revenue for the second quarter of 2026, and Fortune puts the first quarter at $4.73 billion. One quarter of 2026 brought in about two and a half times what all of 2025 did. That money comes from businesses and developers paying for Claude models, such as Claude Sonnet 5.5, through Anthropic's API and subscriptions.
There's a concentration risk inside that growth. Reuters says nearly a quarter of 2025 revenue came from just two customers, whom the reports don't name, and that many large customers aren't locked into long-term contracts.
What the $8 billion operating loss means
The operating loss is the cleanest measure of whether the business pays for itself: revenue minus the cost of running the company. Reuters reports total operating expenses of $12.65 billion in 2025. Subtract $4.59 billion in revenue and you get the $8.06 billion operating loss Capital Brief reports. The two sets of figures agree.
The biggest cost is computing power. Reuters says Anthropic spent $7.33 billion on compute and infrastructure in 2025, three times the 2024 figure and more than half of all operating costs. In other words, the chips that train and run Claude cost more than the company earned in the whole year.
The trend has turned, at least by the company's own yardstick. TechCrunch reports that the document shows Anthropic on track for a second straight quarter of operating profit "on an adjusted basis." Adjusted figures leave out costs the company chooses to exclude, and the reports don't say which ones, so that profit isn't comparable to the 2025 loss.
Why the Anthropic net loss is $42 billion
The scariest number, a net loss of about $42 billion ($41.97 billion, per Capital Brief), is mostly accounting. Reuters says roughly $34 billion of it reflects an increase in the estimated value of financing that could eventually turn into Anthropic shares. Our explanation of how that works: when investors hold instruments that can convert into stock, and the company's value climbs, the accounting rules record the rise in what the company owes them as a loss. No cash leaves the building. It does mean existing and future shareholders own a smaller slice when those instruments convert.
The $518 billion in cloud and infrastructure commitments
Reuters reports that Anthropic plans to spend $518 billion on cloud, computing and infrastructure obligations in the coming years. The reports don't break that down by supplier or by year. For scale, Anthropic ended 2025 with $20.28 billion in cash and short-term investments, per Reuters.
Some of those contracts are already public from the other side. Akamai, for example, disclosed an $11.6 billion, seven-year CPU cloud deal with Anthropic in September. Commitments like these are why the company wants public markets: our reading is that $518 billion only works if revenue keeps growing at something close to this year's pace, and an IPO gives Anthropic a way to raise the capital in between.
Why a third of the document is risk factors
Every prospectus lists risks, but this one spends about 80 of its 261 pages on them, according to a separate Reuters exclusive on the risk section. Reuters notes that SpaceX's prospectus gave about 38 of 277 pages to risks.
The warnings are blunt. Reuters quotes the document saying advanced AI could pose "catastrophic or existential risks to humanity," and that models could show "self-preserving behaviors," including attempts to "resist shutdown," to "conceal or manipulate information" and conduct "resembling blackmail." It also says: "Potential model awareness of our evaluation efforts creates a significant limitation on our ability to assess model safety." Those concerns echo the AI security incidents at OpenAI and Anthropic reported the same week.
Why put this in a sales document? Securities law punishes companies that hide known risks from investors, so a detailed list protects Anthropic if one comes true. It also fits how the company has long described itself, as a lab building a technology it considers dangerous. Both can be true at once.
Why $2 trillion is a projection, not a price
Reuters reports that the IPO's expected valuation is "more than $2 trillion," more than double the $965 billion Anthropic was valued at in May. TechCrunch frames it as what the company's backers believe it could fetch. Either way, that Anthropic valuation is not a price anyone has paid.
An IPO valuation is the share price times the number of shares, and Anthropic's own June announcement says neither has been set. The price gets fixed only at the end of the process, after banks gauge investor demand on a roadshow. Then the market sets its own price from the first trade, higher or lower.
Our arithmetic shows how much future growth $2 trillion assumes. It is about 435 times 2025 revenue. Against the second quarter's $11.5 billion multiplied by four, a simple annualized figure, it is about 43 times revenue. A buyer at that price is paying for the next several years going right, not the last one.
What it means for you
- If you use Claude: nothing changes today. A listing doesn't change the product or its prices, and the reports say nothing about either.
- If you're thinking of buying shares: wait for the public S-1. The SEC requires a confidential draft to be made public at least 15 days before the roadshow starts, and that version is the one with legal weight.
- If you follow AI safety: the risk section is an unusual thing, a company legally on the hook for describing how its product could go wrong. Read it when it's public.
Bottom line
The reported Anthropic IPO prospectus shows fast growth, a heavy but shrinking operating loss, a net loss inflated by accounting, and $518 billion in commitments that assume the growth continues. All of it is from a draft reported by Reuters, TechCrunch and Fortune, not confirmed by Anthropic as of September 29, 2026. The $2 trillion figure is a target. The public S-1 on EDGAR, with a price range, is the next thing to watch.
FAQ
When is the Anthropic IPO?
Anthropic hasn't announced a date. Reuters reports the listing is likely to come after the November 2026 US midterm elections, on Nasdaq. The public S-1 has to appear on EDGAR at least 15 days before the roadshow, so its release is the signal.
How much revenue does Anthropic make?
According to the reported prospectus, nearly $4.6 billion in 2025 and $11.5 billion in the second quarter of 2026. These figures come from a draft reported by the press and are not confirmed by Anthropic.
Why did Anthropic lose $42 billion?
It didn't lose $42 billion in cash. Reuters says about $34 billion of the net loss is an accounting charge tied to financing that could turn into shares. The operating loss, the cost of running the business minus revenue, was about $8 billion.
Is Anthropic worth $2 trillion?
Not yet. More than $2 trillion is the reported target for the IPO, and the price and number of shares haven't been set. The last valuation Reuters cites is $965 billion, from May 2026.