Anthropic's Amended S-1 Shows $17 Billion in Q3 Revenue, a Swing to Operating Loss and $895 Billion in Compute Commitments

The Q3 results missing from Anthropic's original S-1 are now public. In an amended filing with the SEC today, Nov. 2, the company reported revenue of $16.956 billion for the three months ended Sept. 30, up 1,127% from $1.382 billion a year earlier.

The same filing shows a net loss of about $23.29 billion for the quarter, against $12.14 billion in Q3 2025. Operating expenses rose 292% year over year to $17.5 billion.

Revenue up, operating line back in the red

Q2 revenue was $11.6 billion, so the company added more than $5 billion in a single quarter. For the nine months ended Sept. 30, revenue reached $33.24 billion, up roughly 1,200% from the same period of 2025. All of 2025 came to $4.6 billion.

The operating line moved the wrong way. Anthropic swung to a $567 million operating loss in Q3 after reporting $974 million in operating income in Q2.

The company attributes the swing mainly to $5.0 billion of compute bought under short-term commitments, which it says costs significantly more than capacity under multiyear deals. It also cites $2.0 billion in non-cash charges tied to its donation-matching program.

Compute and infrastructure costs alone hit $9.863 billion in the quarter, up 382% and equal to about 58% of revenue.

Price cuts that came with new models, plus contract discounts, shaved about $600 million off revenue between Q2 and Q3, the filing says.

Why the $104 billion loss is mostly paper

The nine-month net loss totals $104 billion, versus $25.1 billion in the same stretch of 2025. The bulk of it is accounting, not cash. About $21.9 billion of the Q3 loss comes from changes in the fair value of convertible notes, derivative liabilities and SAFEs. For the nine months, non-cash charges of roughly $94.3 billion tied to the rising value of the convertible notes drive the total.

Those charges grow as the company's valuation rises ahead of a listing. They do not represent equivalent cash leaving the building.

On its own adjusted measure, Anthropic reported operating income of $2.463 billion for Q3, a 15% margin. That compares with $2.2 billion and 19% in Q2. Adjusted figures are the company's own construct, not GAAP.

The filing lists cash and short-term investments of roughly $131.9 billion as of Sept. 30.

The $895.4 billion commitment

The bigger number in the amendment is the compute bill. Anthropic says it has purchase commitments and lease agreements with aggregate committed spend of about $895.4 billion, "substantially all of which is related to compute and infrastructure."

Roughly $448 billion of that is expected to come due before the end of 2030. About $70 billion falls in the 12 months through September 2027.

Anthropic buys capacity from Amazon, Google and SpaceX, and leans on neoclouds for some of the rest. SpaceX counts Anthropic as its largest customer.

The company's explanation for the cost growth is simple. "As our compute and infrastructure capacity grows, the associated compute and infrastructure expenses have increased," the filing says. Anthropic frames revenue outrunning compute spending as evidence of efficiency.

The worry on the other side

The filing lands amid investor anxiety about the AI buildout. Concern on Wall Street has centered on whether rising interest rates make debt unaffordable for data center developers and neoclouds. Last week's quarterly reports from Microsoft, Google and Amazon added to it, as the hyperscalers' heavy AI spending is cutting into their cash flows. Some investors fear compute capacity may not come online fast enough to meet Anthropic's demand.

The risk, as Invezz's analysis frames it, is that commitments of this size fail to turn into profitable usage, with customers cancelling or renegotiating while the company keeps burning cash faster than revenue grows.

The customer numbers cut the other way. More than 11,900 customers each generated at least $100,000 over the 12 months to Sept. 30, up from more than 950 a year earlier. More than 1,900 paid $1 million or more, and about 250 paid $10 million or more. Headcount is roughly 5,300.

Deal mechanics added

The amendment adds details on how shares would be sold. Anthropic expects to offer part of the shares to retail investors through Charles Schwab, Fidelity, Robinhood, SoFi, E*TRADE from Morgan Stanley and Trade-PMR, at the IPO price and under each broker's rules. Public sales are planned in Australia, Canada, parts of the European Economic Area, Japan, Switzerland and the United Kingdom. Bloomberg reports Anthropic aims to raise up to $3.5 billion from Japanese investors.

The filing also discloses that Anthropic granted Google an option to buy up to $10 billion of Class N common stock at the offering price during the IPO.

The shares are slated to list on the Nasdaq Global Select Market under the symbol ANT. The founder-held share carrying 50.1% of the vote, disclosed in the original filing, is unchanged.

Anthropic has still not filled in a price range, share count or offering size. Those come next, along with the start of the road show. OpenAI, which confidentially filed in June, is aiming for a 2027 debut.