On November 2, 2026, Anthropic filed an amended registration statement (Form S-1/A) with the SEC. The original filing a week earlier covered only the first half of 2026. The amendment adds the third quarter, and with it the first look at the company's results through September 30. The headline numbers are large on every line: revenue of about $17 billion in a single quarter, a net loss of $23.29 billion, and aggregate committed spend of roughly $895.4 billion.
This post does not repeat the risk-factor discussion covered in an earlier analysis of the filing (see the training-pause and sandbox-escape risk factors). It focuses on three questions the new numbers raise: how fast revenue is really growing now, how much of the loss is operating reality versus accounting revaluation, and how to think about a commitment total that is about thirteen times the current revenue run rate.
What the filing reports for the third quarter
The unaudited quarterly table in the S-1/A shows Q3 2026 revenue of $16,956 million, against $11,555 million in Q2 2026 and $1,382 million in Q3 2025. That is the figure press coverage rounds to $17 billion and describes as growth of about 1,127% year over year. The filing itself uses the 1,127% number in its discussion of compute efficiency. Earlier reporting, based on investor briefings before the filing, had put the quarter near $16.8 billion; the filed figure is slightly higher.
Sequential growth is where the story is changing. Using the filed quarterly figures, revenue grew about 132% from Q4 2025 to Q1 2026, about 144% from Q1 to Q2, and about 47% from Q2 to Q3 (growth rates computed from the filing's quarterly table, consistent with CNBC's reporting). A 47% quarter-on-quarter gain is still extraordinary for a business of this size, but it is a clear deceleration from the first half. Two details in the filing add texture: the number of customers generating at least $100,000 of trailing-twelve-month revenue rose from roughly 400 in March 2025 to more than 11,900 at September 30, 2026, and the Q2-to-Q3 revenue increase was partly offset by about $600 million of price reductions from new model versions and contractual discounts.
Operating result versus fair-value noise, by quarter
Operating income (loss) and the non-cash change in fair value of convertible notes, derivatives and SAFEs, in $ billions. The scale gap is the point: the operating line is small next to the revaluation line.
Source: Anthropic PBC Form S-1/A (filed November 2, 2026), unaudited quarterly statements of operations.
Operating loss versus fair-value noise
The $23.29 billion Q3 net loss is the number most likely to be quoted without context, so the composition matters. The filing's quarterly statement breaks it down this way (in millions of dollars): operating loss of $567, interest income of $1,248, a change in fair value of convertible notes, derivative liabilities and SAFEs of negative $21,936, other expense of $1,640, and income taxes of $396. The fair-value line alone accounts for roughly 94% of the quarter's net loss (our calculation: 21,936 divided by 23,291).
That line is an accounting consequence of a rising valuation. Convertible notes and similar instruments that convert into equity are marked to fair value each period; when the company's estimated enterprise value goes up, the liability goes up, and the difference runs through the income statement as a loss without any cash leaving the business. The filing says this directly: of the $156.2 billion accumulated deficit at September 30, 2026, $135.1 billion relates to fair-value changes on convertible notes and derivative liabilities since 2023, including $94.3 billion in the first nine months of 2026. Across those nine months the net loss was about $104.0 billion (our sum of the three quarters: 14,439, 66,309 and 23,291 million), so the fair-value change explains roughly 91% of it.
The operating line tells a different and much smaller story. Anthropic posted an operating profit of $974 million in Q2 2026, then an operating loss of $567 million in Q3, which is about negative 3% of revenue. For the nine months, operating loss sums to about $1.26 billion (our sum: negative 1,667, plus 974, minus 567) on $33.24 billion of revenue. One reason Q3 slipped back to a loss is visible in the filing: other operating and administrative expense rose to $3,588 million, driven mainly by non-cash charges for the company's donation matching program, which the adjusted-income reconciliation shows as $1,960 million of non-cash charitable contributions in the quarter. Excluding that single item would leave a Q3 operating result of roughly positive $1.4 billion (our illustration, not a figure the company reports as such). Readers should treat that as a sensitivity, not a restatement: stock-based compensation of $1,070 million and the other real costs remain in the line.
The net loss is mostly a revaluation of the company's own financing instruments; the operating line is where the business shows up.
Reading the S-1/A quarterly statement of operations
The cash picture is not the net-loss picture
Because the fair-value charge is non-cash, cash flow and liquidity are better guides to financial strength than the headline loss. At September 30, 2026 the filing reports cash and cash equivalents of $95.6 billion, $36.3 billion of short-term investments and $14.8 billion available under its credit facility. For the nine months, net cash provided by operating activities was positive $6.57 billion, while financing inflows were $110.7 billion and investing outflows were $36.5 billion. In other words, the company is funding a very large build-out mostly from capital raised, with operations contributing modestly in the positive direction rather than burning cash.
A balanced reading has to hold both facts. Operating cash flow turning positive on a nine-month basis is a meaningful marker for a company this young. At the same time, it is being outpaced by the scale of spending commitments described next, and the capital markets that supplied $110.7 billion of financing this year are the same ones an IPO would tap again.
Compute: costs rising slower than revenue, but still the largest line
Compute and infrastructure expense was $9,863 million in Q3 2026 (versus $5,558 million in Q2 and $2,047 million in Q3 2025), up about 382% year over year according to the filing, against revenue growth of 1,127%. For the nine months it was $18,808 million versus $4,381 million a year earlier, which is the 329% increase CNBC cites. Revenue per dollar of compute expense, computed from the quarterly table, was about 0.68 in Q3 2025, 1.40 in Q1 2026, 2.08 in Q2 2026 and 1.72 in Q3 2026. The Q3 dip from Q2 is worth watching: compute rose from 48% to 58% of revenue in the quarter, which is the main reason the operating result moved from profit to a small loss.
The $895.4 billion commitment figure
The filing states that, as of and subsequent to September 30, 2026, Anthropic has entered into purchase commitments and lease agreements, including short-term commitments and leases not yet commenced, with an aggregate committed spend of approximately $895.4 billion, substantially all related to compute and infrastructure. Approximately $447.5 billion is expected to be incurred before December 31, 2030, and substantially all of the remainder between 2031 and 2045. About $69.8 billion falls due in the 12 months following September 30, 2026.
Three ratios, all our own calculations from filed numbers, help size it:
- Against run-rate revenue. Q3 revenue annualised is about $67.8 billion (16.956 times four), so the total is roughly 13 times the current run rate.
- Against the next 12 months. The $69.8 billion due in the next year is about 1.03 times annualised Q3 revenue, and about 53% of the $131.9 billion held in cash and short-term investments (95.6 plus 36.3).
- Against time. The schedule is split almost exactly in half around 2030: $447.5 billion before the end of 2030 and the remaining roughly $447.9 billion (derived by subtraction) from 2031 through 2045.
$895.4B of commitments against a $67.8B run rate
Committed spend by timing, in $ billions, next to Q3 2026 revenue annualised. The first-year bucket is roughly one run-rate year of revenue; about half of the total falls after 2030.
Source: Anthropic PBC Form S-1/A (filed November 2, 2026). Annualised revenue and the 2031 to 2045 bucket are Metir calculations.
Two cautions apply to any ratio like this. First, a multi-decade commitment is not comparable to one year of revenue; the relevant comparison is against the revenue the company earns over the same period, which is unknown. Second, the figure bundles different instruments: firm purchase obligations, leases that have not yet commenced and short-term commitments. The filing describes the total as substantially all compute and infrastructure, but the mix of cancellable versus fixed terms is not visible in a single number, and that mix determines how much of the figure behaves like debt.
Anthropic
AWS
Google Cloud
NVIDIAWhy the number is the debate
Two broad readings of $895.4 billion are available, and the filing supports elements of both.
Reading one: capacity ahead of demand. If revenue growth keeps decelerating (47% quarterly now, versus 144% last quarter), the obligations could outgrow the revenue meant to service them. A commitment of this size also ties the company to specific suppliers and chip generations for years, and the filing's own risk language says such expenditures may not result in increased revenue or growth.
Reading two: demand already outrunning supply. Revenue grew 1,127% over a period in which compute expense grew 382%, customer count at the $100,000 level grew from about 400 to more than 11,900, and the company positions its compute efficiency as a competitive advantage. On this view, long-dated commitments are how a supply-constrained business secures capacity that its customers are already asking for.
Neither reading is settled by one quarter. What would distinguish them is observable: whether sequential growth stabilises in a range that covers the annual step-up in commitments, whether compute as a share of revenue returns toward the 48% of Q2 or keeps rising above the 58% of Q3, and whether pricing pressure (the roughly $600 million Q3 price offset) grows as new models launch.
What to watch next
- The fourth-quarter print. Sequential growth below the Q3 rate would intensify the commitments debate; growth that holds near it would soften it.
- Operating margin without the donation-matching charge. The Q2 profit and Q3 small loss bracket a narrow range, so one-off non-cash items can flip the sign.
- The fair-value line after pricing. How the convertible notes and derivative liabilities are treated at and after an offering determines whether the recurring revaluation charge continues. That treatment is worth reading in the final prospectus.
- Commitment composition. Any disclosure of fixed versus flexible terms would change how the $895.4 billion should be weighted.
For teams building on frontier models, the practical angle is supplier concentration and continuity rather than the loss figure. Tools that keep workflows portable across providers, such as the model-agnostic approach Metir takes, reduce exposure to any single lab's capacity or pricing decisions, whatever the filing's eventual outcome.
Sources:
- Anthropic, PBC, Form S-1/A filed November 2, 2026 (SEC EDGAR): https://www.sec.gov/Archives/edgar/data/2130357/000162828026068676/anthropicpbc-sx1ax1.htm
- CNBC, "Anthropic S-1 quarter financials," November 2, 2026: https://www.cnbc.com/2026/11/02/anthropic-ant-s-1-quarter-financials.html
- Anthropic, PBC, original Form S-1 (SEC EDGAR): https://www.sec.gov/Archives/edgar/data/0002130357/000162828026067168/anthropicpbc-sx1.htm
- Wikimedia Commons, Dario Amodei at TechCrunch Disrupt 2023: https://commons.wikimedia.org/wiki/File:Dario_Amodei_at_TechCrunch_Disrupt_2023_05.jpg
Ratios, annualised revenue, nine-month sums and the 2031 to 2045 remainder are Metir calculations from the filed figures. Figures in the S-1/A quarterly tables are unaudited.
Image credits
- Hero: Dario Amodei at TechCrunch Disrupt 2023, TechCrunch, CC BY 2.0, via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Dario_Amodei_at_TechCrunch_Disrupt_2023_05.jpg
- Body: Secretary of State Peter Kyle visits Anthropic in San Francisco, Alecsandr (UK Government), CC BY 2.0, via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Secretary_of_State_Peter_Kyle_visits_Anthropic_in_San_Francisco._(54098999333).jpg