Anthropic IPO filing reveals revenue and risks

Anthropic’s first public IPO filing answers a question investors have been asking for months: how much money is Claude making? Revenue reached $16.286 billion in the first half of 2026, around 14 times the year-earlier figure. The harder question is whether customers will keep using enough Claude to pay for the computing capacity Anthropic has already arranged.

The filing also contains an $80.748 billion net loss and a very large cash balance. Neither tells that story on its own. A financing-related valuation charge drove most of the loss, while preferred-share sales supplied most of the new cash. Operating performance improved sharply. Future compute payments, the terms of the proposed shares, and an IPO price that remains blank still need to be weighed alongside that progress.

What the Anthropic IPO filing confirms

Anthropic, PBC filed its public Form S-1 with the U.S. Securities and Exchange Commission (SEC) on October 26. It proposes to sell Class A common shares and has applied to list them on Nasdaq under ANT. As of October 27, the public filing record showed no later amendment or confirmed first trading date. The number of shares and proposed price range had not been filled in.

Anthropic would receive proceeds from new shares it sells, after offering costs. Existing holders may sell shares in the same offering, but that money would go to them. With both quantities still open, there is no reliable way to calculate how much the IPO would raise for Anthropic, what new buyers would own, or an official valuation.

A proposed ticker can be mistaken for a live stock, particularly when other assets use similar names. Anthropic’s Class A shares have not been priced or confirmed as trading.

Revenue grew faster than operating costs

Claude earns money through Anthropic’s own applications, its application programming interface (API), enterprise agreements, and cloud marketplaces. The two half-year columns below show the comparable growth; the full-year 2025 column provides context.

The 2025 annual figures are audited; the June 2026 interim figures are unaudited. The cost-of-revenue and research rows come from a supplemental expense note.

Anthropic revenue and operating results from the U.S. Securities and Exchange Commission Form S-1, as of June 30, 2026.

The change within 2026 was striking. Anthropic recorded a $1.667 billion operating loss in the first quarter, then $974 million of operating income in the second. Customer spending was covering more of the costs recognized as the year progressed.

There is a catch in the attractive gross-margin figure. Revenue minus the supplemental cost-of-revenue line gives an 85.4% calculated gross margin for the first half. It leaves out much of the expense of improving Claude: research and development cost $9.741 billion, and compute and infrastructure expense across the business totaled $8.945 billion. The narrower margin calculation cannot describe the full cost of building and selling the service.

Cloud marketplaces are another reason to look beyond the headline revenue. They generated 48% of first-half sales and accounted for 58% of net receivables at June 30. Anthropic records marketplace customer sales gross, while partner fees appear in other expenses. The providers help sell Claude and collect payment; several also supply capacity. That gives Anthropic a powerful route to customers, with much riding on the economics of a small group of relationships.

What the $80.7 billion loss measures

The net loss does not mean Anthropic spent $80.7 billion in cash operating Claude during six months. Its first-half operating loss was $693 million. The much larger figure arose mainly below the operating line.

Anthropic attributes the $72.388 billion fair-value charge principally to a higher estimated value for convertible financing as the company’s valuation increased. The charge was not an equivalent operating cash payment. It cannot simply be ignored, though: conversion may change how much of the company belongs to financing holders and future public shareholders.

Operations generated $3.929 billion of cash in the first half. Cash and short-term investments stood at $131.651 billion on June 30, but preferred-share issuance supplied $110.432 billion during the period. Anthropic’s operating cash flow improved; its customers did not build that entire cash balance.

The next useful cash-flow test is what happens when more contracted capacity enters service. A positive half-year is encouraging. It gives no simple “years of runway” answer when payment schedules and future customer usage are still developing.

The compute bill comes before the demand is certain

Anthropic often arranges compute 12 to 18 months before it becomes available. That can secure scarce capacity before a rival does. It also means committing to supply while future customer demand remains uncertain.

Anthropic’s model-improvement and investment loops from the U.S. Securities and Exchange Commission Form S-1, as of October 26, 2026. 

Anthropic’s argument runs in two loops: more use can produce feedback that helps improve Claude, while growth can fund the capacity needed to expand it. The filing shows rapid revenue growth, but the diagram cannot tell investors whether future demand will arrive quickly enough to justify the next round of spending. That is the question behind its $265.6 billion in future purchase commitments. 

Expected future fixed or minimum guaranteed purchase commitments totaled $265.6 billion at June 30, 2026, primarily for hosting and infrastructure. The contracts span multiple years; the figure is not a payment due all at once. The preliminary filing does not yet give readers a complete, current annual schedule against which to compare those payments with expected cash receipts.

Anthropic has arrangements with providers including Google, Amazon, and Microsoft. Some specify minimum spending even when usage falls below plan, subject to each contract’s adjustments and exceptions. Other expansion plans depend on capacity being delivered or deployed. Their headline values refer to different dates and terms, so adding them together would produce a total the filing does not establish.

This lead time is common across the sector. Earlier AI cloud earnings showed providers selling capacity before facilities were ready. Anthropic sits on the customer side of that decision. If Claude usage grows as capacity arrives, the contracts give it room to serve demand. If usage lags, minimum payments can reach the income statement and cash flow before that capacity earns its keep.

The second-quarter operating profit makes the favorable path credible. One profitable quarter cannot show how several years of capacity deliveries will perform. Revenue, operating cash flow, and the timing of new compute costs need to be read together in the next filing.

What buyers of Class A would control

Public buyers would receive economic shares with one ordinary vote each. Anthropic’s proposed governance structure assigns other powers to two special shares:

• Class F: One share planned for an entity organized by the co-founders would carry 50.1% of general stockholder voting power while the arrangement operates. That is voting power, not a claim that the founders own 50.1% of the company’s economics.

• Class T: A share held by the Long-Term Benefit Trust generally allows it to select and remove a majority of the board. Four of the seven authorized board seats fall under that right.

• Class A: The proposed public shares have an economic interest and ordinary votes, but those votes sit alongside the founder and trust powers.

The structure may give Anthropic room to maintain long-term research and safety priorities when shareholders want faster returns. It also makes the board harder for ordinary shareholders to change. That tradeoff belongs in any assessment of the proposed Class A shares.

The rights belong to the shares themselves. As this comparison of direct shares and stock perpetuals explains, a derivative can follow a stock’s price without giving its holder a vote in the company. The distinction is especially important for Anthropic, where voting rights are part of the IPO story.

Preferred-share conversion, notes, equity awards, and new IPO shares will also affect the final ownership picture. Until the offer price and post-offering share count are disclosed, the filing supports no sound valuation or dilution-per-share estimate.

Anthropic IPO outlook

Anthropic has demonstrated strong customer growth and a sharp operating improvement. Its next financial results will show whether those gains persist as more compute becomes available. Revenue that continues to absorb new capacity, with operating cash flow staying positive, would strengthen the business case. Rising minimum payments alongside weaker usage or margins would weaken it.

For the proposed stock, the missing price and share count remain decisive. The S-1 explains what Anthropic has built and what it has committed to spend. The final offering terms will determine what public buyers are asked to pay for that business.

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