Anthropic's amended IPO filing shows $17 billion in revenue in a single quarter

Anthropic, PBC filed Amendment No. 1 to its Form S-1 registration statement with the SEC on Monday, Nov. 2, 2026, adding results for the three months ended Sept. 30, 2026, to the IPO prospectus it first made public on Oct. 26.

Seventeen billion dollars in one quarter is the kind of number that ends arguments about whether people pay for AI. But the same table shows the bill: compute costs almost doubled in three months and now eat well over half of revenue, and there is close to $900 billion of compute already promised to suppliers. The cleaned-up profit number the company likes to talk about is still positive; the plain operating line slipped back into the red once a big one-time donation is counted. Investors will get to decide which line they believe when a price finally appears on the cover.

Anthropic, PBC filed Amendment No. 1 to its Form S-1 with the U.S. Securities and Exchange Commission on Nov. 2, 2026. A Form S-1 is the paperwork a company files when it wants to sell shares to the public. This amendment adds results for the three months ended Sept. 30, 2026, to the prospectus first made public on Oct. 26. The offering price range and the share count are still blank. The filing says the IPO price "will be determined by negotiations" with the underwriters. An underwriter is a bank that runs the share sale. Those lines are the amended filing's.

Revenue for the quarter was $16,956 million, about $17.0 billion. That is up from $1,382 million in the same quarter of 2025, about 12.3 times as much, roughly a 1,127% increase, and up from $11,555 million in the June quarter, about 47% in three months. About 12.3 times means the new quarter is that many times the old one. A 1,127% increase is that same jump, stated as a percent. About 47% higher means roughly $1.47 of revenue for every $1 in the June quarter. The table states the dollar figures in millions. Those figures are the filing's.

The single quarter was larger than revenue for the whole first half of 2026. The first quarter was $4,731 million and the second was $11,555 million, which together are $16,286 million. Revenue for the first nine months of 2026 totals about $33.2 billion. Those sums are the quarterly figures in the table, added up.

Compute and infrastructure expense was $9,863 million in the quarter, up from $5,558 million in the June quarter and from $2,047 million a year earlier, about 382% higher than a year earlier. A 382% increase means the new bill is a bit under five times the old one. That is about 58 cents of every revenue dollar, versus about 48 cents in the June quarter. Those figures are the table's.

Total operating expenses were $17,523 million. The result was an operating loss of $567 million, after operating income of $974 million in the June quarter. An operating loss is the loss from running the business, before the big accounting change below. Those figures are the table's.

The quarter's expenses included $1,960 million of non-cash charitable contributions and $1,070 million of stock-based compensation. Stock-based compensation is pay in shares rather than cash. Anthropic's adjusted operating income, which adds those two items back, was $2,463 million, up from $2,235 million in the June quarter. That is an adjusted operating margin of about 15%, about 15 cents of that adjusted figure for every dollar of revenue. Adjusted operating income is a measure Anthropic defines, not the standard accounting result. Those figures are the filing's.

Net loss for the quarter was $23,291 million, about $23.3 billion. Most of it, $21,936 million, was a non-cash change in the fair value of convertible notes, derivative liabilities, and SAFEs. A convertible note is debt that can turn into stock. A derivative liability is a contract whose value moves with the company's value. A SAFE, a simple agreement for future equity, is a contract that can turn into stock later. Fair value is the current estimated price of those contracts. That kind of accounting hit tends to grow as a company's valuation rises. It is not cash spent running the business. Those figures are the table's.

The filing says that, as of and after Sept. 30, 2026, Anthropic has purchase commitments and lease agreements with aggregate committed spend of about $895.4 billion, substantially all for compute and infrastructure. A purchase commitment is a promise to buy. About $447.5 billion is expected before Dec. 31, 2030. The rest is mostly between 2031 and 2045. About $69.8 billion is due in the 12 months after Sept. 30, 2026. Those lines are the filing's.

The filing says trailing-twelve-month revenue per employee was over $6.6 million as of Sept. 30, 2026, versus $1.4 million a year earlier. Trailing twelve months means the past year added up, not one quarter. Revenue over that span grew about 1,200% while headcount grew about 170%. Sales grew much faster than the staff. Those lines are the filing's.

Anthropic still proposes to list Class A common stock on the Nasdaq Global Select Market under the symbol "ANT." Class A is the share class offered to the public. The Nasdaq Global Select Market is that exchange's top listing tier. That proposal is the filing's. The price range and the share count are still blank.

The picture is the quarterly results of operations table in the amended S-1. It shows revenue for each quarter from March 2025 to September 2026 rising to $16,956 million in the quarter ended Sept. 30, 2026, with compute and infrastructure costs of $9,863 million, an operating loss of $567 million, and a net loss of $23,291 million. The credit is Anthropic, PBC amended Form S-1 (SEC EDGAR); Bad Signal screenshot.

In plain terms, Anthropic's amended IPO filing on Monday put about $17 billion of revenue in one quarter, more than the whole first half and about 12 times the same quarter a year earlier. Compute and infrastructure took about 58 cents of each revenue dollar, up from about 48 cents in the June quarter. The operating line went from $974 million of operating income in June to a $567 million operating loss. The adjusted figure Anthropic prefers, which adds back stock pay and non-cash charitable contributions, was $2,463 million. The $23.3 billion net loss is mostly a non-cash accounting change. The price and the share count are still blank, and the company still wants the ticker ANT.