A filing, not a price

Nothing about October 26 sets what Anthropic is worth. The cover of the prospectus leaves the offering price as a blank between two dollar signs, and Anthropic's announcement says the share count and price range have not yet been determined. Every valuation figure in circulation today, the $1.5 trillion to $2 trillion range included, comes from press reporting about what bankers and investors expect. The filing's contribution is different: it replaces a confidential draft, known until now through one newspaper's reporting, with a document any reader can open and check line by line. We covered the draft figures in [our October 20 piece on the confidential filing](https://alfw.ai/article/anthropic-h1-loss-80b-accounting/); the comparison below is the one that piece promised.

Checked that way, the two headline lines survived exactly. First-half revenue is confirmed at $16.286 billion and the net loss at $80.748 billion, and the accounting charge is now identified precisely: $72.388 billion of the loss is the change in fair value of convertible notes, derivative liabilities and SAFEs, a non-cash charge that grows as the company's own valuation climbs. The commitments picture is not directly comparable: the draft reporting described roughly $450 billion of signed agreements, while the public filing itemises named contracts, treated in the third section below. The concentration line needs its periods kept apart. The earlier confidential-draft reporting described two customers accounting for roughly one-fifth of first-half sales. The public filing says no single customer exceeded 10% of revenue over the first nine months, while the top five contributed approximately 25%. Those statements cover different periods and do not establish whether concentration improved between them.

The quarter underneath the loss

The disclosure the leak did not carry is an operating line moving the other way. Anthropic lost $693 million from operations in the first half, against $2,135 million a year earlier, and in the second quarter it earned $974 million of operating income on $11.56 billion of revenue. Anthropic reported $974 million in GAAP operating income for the June quarter. That is not the same as net profit; the quarterly net result has not been established in the figures reviewed for this article.

Anthropic also reported approximately $1.6 billion in adjusted first-half operating income, a non-GAAP measure it defines as operating loss excluding stock-based compensation ($2,185 million in the first half), non-cash charitable contributions ($126 million) and the Bartz settlement charge, which fell in 2025. It is a different measure from the $693 million GAAP operating loss, not a restatement of it. Compute and infrastructure expense declined from approximately 201% of revenue in the first half of 2025 to 55% in the first half of 2026. Growth is still the engine of that improvement, and the filing itself says the growth rate will not hold. But the direction is now a reported result rather than an investor-day claim.

The retention figure needs its definition kept attached. Net revenue retention of about 900% does not mean a standard software metric moved ninefold. The filing defines it as one quarter's revenue from qualified customers divided by the same customers' revenue in the same quarter a year earlier, with fixed-price Pro and Max subscriptions excluded. Qualified customers generated approximately nine times their year-earlier quarterly revenue under Anthropic's NRR definition, which excludes Claude Pro and Max subscribers. It is a measure of how fast usage expands inside existing accounts, which for a company selling tokens by the metre is the core of the business: 80% of first-half revenue was consumption-based, and 48% of all revenue arrived through the cloud marketplaces of Amazon, Google and Microsoft, three companies that also supply its compute and sell competing models.

$637 billion, with an asterisk the filing wrote itself

Readers adding up the named compute contracts in the prospectus reach roughly $637 billion: about $161.2 billion of Broadcom and Google TPU equipment leases, $114.5 billion with Google Cloud, $110 billion with Amazon, $44.9 billion with Microsoft, up to $120.5 billion with SpaceXAI, about $44.6 billion with Nscale and $41.3 billion with Lambda. Seven individually disclosed compute and infrastructure arrangements add to approximately $637 billion at their stated amounts or ceilings. That is our arithmetic, not an aggregate liability figure supplied by Anthropic. The lines mix lease payments, minimum commitments and contingent maximums, and the filing's summary aggregate is not populated in the reviewed text: the summary describes an aggregate committed spend of "more than $" and leaves the amount blank.

Against those obligations the filing sets $112.4 billion of cash and $19.3 billion of short-term investments at June 30, and says the company had raised an aggregate of $141.1 billion of capital by that date. The obligations are not a bill due at the listing: they extend across years — the filing expects substantially all of the remainder of its commitments to be incurred between 2031 and 2045 — and future revenue and financing are expected to carry much of them. Even with that timing, the distance between the liquid column and the commitments column is the scale of the bet the IPO asks public investors to underwrite.

Shares without a majority

The last thing the public version settles is control, and it settles it against the buyer. Immediately before the offering completes, Anthropic will issue one share of Class F stock to a limited liability company owned by its seven co-founders. That share carries 50.1% of the vote on anything put to stockholders and no economic rights at all. Separately, the Long-Term Benefit Trust, through Class T stock, elects the directors who form a majority of the board; the founders' company and the trust are distinct holders with distinct powers. Employee shares (Class E) vote only on limited matters and carry no economic rights, and the strategic partners' shares (Class N) do not vote. Anthropic calls itself a controlled company, and its risk factors concede the structure may effectively eliminate Class A holders' ability to influence important decisions. None of this is hidden or new in outline; the trust arrangements have been reported before. What changed today is that it is now the printed term sheet. Public investors can buy an economic stake in Anthropic, but not the ability to outvote its founders or elect the board majority.

Sources

  1. [1] Anthropic, "Anthropic files S-1 with the SEC for proposed initial public offering", October 26, 2026 (primary announcement; ticker, exchange, undetermined share count and price range, Goldman Sachs and Morgan Stanley prospectus contacts, not-yet-effective statement)Read source
  2. [2] Anthropic, PBC, Form S-1, U.S. Securities and Exchange Commission, EDGAR, filed October 26, 2026 (primary document; financial statements, quarterly results, compute commitments, customer metrics, non-GAAP reconciliation and governance text verified against the filing)Read source
  3. [3] NPR via WCMU, "AI giant Anthropic files for an IPO that could break records", October 26, 2026 (filing context, reported $1.5–2 trillion valuation range, November timing expectation, risk-factor themes)Read source
  4. [4] The VC Corner, "Anthropic S-1: IPO Filing, ANT Ticker, Revenue and Losses", October 26, 2026 (page-cited reading of the filing: revenue p.23, fair-value charge p.23, Q2 operating income p.158, NRR p.11, customers p.195, compute contracts pp.171–172)Read source
  5. [5] Neowin, "Anthropic's IPO filing reveals $16.3B revenue, $80.7B loss and $800B compute plans", October 26, 2026 (revenue history, customer tiers, revenue mix, itemised compute agreements, control summary)Read source
  6. [6] Motley Fool, "Anthropic Just Filed Its IPO Prospectus. Here's What Investors Learned", October 26, 2026 (operating loss context, adjusted operating income, cash position, control)Read source
  7. [7] SaaStr, "5 Interesting Learnings from Anthropic's S-1", October 26, 2026 (NRR definition and customer tiers)Read source
  8. [8] Decrypt, "Anthropic Makes IPO Filing Public, Plans Nasdaq Listing Under 'ANT'", October 26, 2026 (confidential June filing, May round of $65 billion at a $965 billion valuation, underwriters)Read source
  9. [9] PYMNTS, "Anthropic Files IPO Showing $16.3 Billion Six-Month Revenue and $80.7 Billion Net Loss", October 26, 2026 (filing length and risk-factor pages, Founder LLC voting share)Read source