Anthropic Shows IPO Buyers a $16.8 Billion Quarter

Anthropic told prospective investors third-quarter revenue reached $16.8 billion, up 45% from the prior quarter, as it prepared to list. The Claude maker walked public-market funds through the figure on October 14 at its San Francisco headquarters and said the quarter was profitable on an adjusted basis.

The print is an opening bid to go public before OpenAI, and to set the first listed price for a frontier lab whose largest cloud landlords already own a piece of the company.

Buyers Heard Profit, Cash Flow and an 85% Margin

Attendees met chief executive Dario Amodei and chief financial officer Krishna Rao in a day of presentations that ran long enough for money managers to join in person and by video. Seats were limited. Anthropic, a public benefit corporation, declined to comment after the session.

People familiar with the slides said the firm generated positive free cash flow in the third quarter. They also described an adjusted gross margin of 85% and an adjusted operating margin of more than 11%, numbers meant to answer the charge that frontier models cannot cover the cost of running them.

Q3 MARGINS SHOWN TO FUNDS

• Adjusted gross margin: 85%, according to people familiar with the presentation.
• Adjusted operating margin: More than 11% for the third quarter.
• Free cash flow: Positive in the quarter, the same people said.
• Compute margin: More than 40% after subtracting computing and related infrastructure.

Some attendees put net revenue retention at 900%, a measure of how much existing customers spend compared with a year earlier. Investors who heard the pitch also said Anthropic generated $1.70 of revenue for each dollar of compute. Those claims sit beside a 2025 operating loss of $8.06 billion, up from $2.98 billion the year before, in a confidential prospectus that circulated last month.

The 2025 net loss was about $42 billion. Independent research firm New Constructs notes that figure includes a $34 billion charge tied to convertible instruments, which is why the operating loss and the net loss are different numbers.

Growth Slowed After a Triple in Six Months

The $16.8 billion quarter is still a steep climb. It is also slower than the step that came before it. First-quarter revenue was $4.7 billion. Second-quarter revenue was $11.6 billion, a 147% jump. The next move, $5.2 billion of added sales, was smaller than the $6.9 billion added between the first and second quarters.

ANTHROPIC QUARTERLY REVENUE IN 2026

Harrison Rolfes, a private-company analyst at PitchBook, said the slope is the tell. “They’re still growing, but not growing as fast. So they’re reaching this inflection point,” he said. Annualizing the third quarter produces $67.2 billion, close to the $65 billion run rate Anthropic described at the end of July, which is why a 45% quarterly gain is already being read in trading rooms as a deceleration print rather than a surprise beat.

In May the company raised $65 billion at a $965 billion valuation, and it said run-rate revenue crossed $47 billion earlier that month. Analysts who met executives this week have talked about a $110 billion run rate by year-end. That target would require another sharp acceleration from the $67.2 billion implied by the third-quarter figure alone.

Full-year 2025 sales were about $4.6 billion, roughly twelve times the prior year’s roughly $400 million. The 2026 run-rate talk is a different series, built by annualizing recent months rather than by adding four audited quarters.

The Cloud Pair That Wins Either Way

Amazon and Alphabet’s Google are the quiet winners of a listing, because they sit on both sides of Anthropic’s ledger. They hold large equity stakes, they bill Anthropic for computing capacity, and they also collect a cut of Claude sales that run through their clouds. A leaked draft of the prospectus showed 47% of 2025 sales, or $2.16 billion, routed through those two partners.

Amazon’s second-quarter results included $53.4 billion of other income, primarily from its Anthropic investments, against $27.5 billion of operating income. Net income for the quarter was $62.6 billion. The markup is paper until the stock trades, but it already dwarfs the operating line.

Amazon had put $18 billion into Anthropic by June 30, a mix of convertible notes and nonvoting preferred stock, and carried the holding at $190.4 billion on that date. The company does not publish a single ownership percentage, and the notes are subject to a cap Amazon can waive. Alphabet’s stake is also undisclosed in a clean public figure, yet the draft filing assigned Google at least $111.1 billion of future compute spend and Amazon about $110 billion.

If the listing holds near the more than $2 trillion valuation buyers have been asked to consider, those carrying values get a market tape. If it does not, the same two firms still have take-or-pay compute contracts stretching into the 2030s. Either path pays the landlords.

Why OpenAI’s Revenue Looks Smaller

OpenAI told its own investors that annualized sales were close to $50 billion at the end of September, a net figure that counts only the share OpenAI keeps when Microsoft and other partners bill the customer. Anthropic’s published run rates count the gross value of sales that pass through Amazon and Google. The two labs are not publishing the same unit, which is why a $16.8 billion Anthropic quarter can sit beside a $50 billion OpenAI run rate and still be sold as a lead.

Investors who applied Anthropic’s gross method to OpenAI produced a figure near $70 billion, then had to walk it back. OpenAI has said it still wants $70 billion or more by year-end on its own definition. Sam Altman has also said a 2026 listing would be ill-advised, and the firm has been discussing a further private raise of $30 billion or more at a $1.4 trillion pre-money valuation after a March round of $122 billion at $852 billion.

That leaves Anthropic as the lab willing to take the public tape first. Tech investor Michael Fertik said Anthropic looks like a blockbuster that could fill some of the hole left if OpenAI stays private. The cost of going first is that Anthropic’s adjusted-profit definitions, partner-grossed sales, and locked compute will become the template against which OpenAI is judged when it does file.

The Compute Bill Anthropic Cannot Cancel

The same prospectus that showed 2025 sales of about $4.6 billion also showed at least $518 billion of cloud, chip, and infrastructure obligations over the next decade, about 80% of them non-cancellable or payable even if usage falls short. At the end of 2025, non-cancellable hosting already stood at $54.6 billion. By early 2026 the longer book of commitments topped $417 billion and covered 3.5 gigawatts of dedicated capacity.

LOCKED COMPUTE ON THE LEDGER

• Google: At least $111.1 billion of spend, with a shortfall clause that requires Anthropic to pay the difference if actual use undershoots.
• Amazon: About $110 billion over roughly a decade, tied to AWS and Trainium capacity.
• Microsoft: $31.4 billion among the named cloud bills.
• The rest of the six: Broadcom, SpaceX, and AMD sit in the same supplier group for chips, capacity, and related gear.
• The lock: About 80% of the $518 billion cannot be walked away from if demand cools.

Those contracts are how Anthropic buys the capacity to keep growing. They are also how a listing transfers a take-or-pay stack onto public holders. Bankers working on the deal have talked about raising as much as $100 billion of proceeds, a figure that would still cover only a slice of the decade bill.

New Constructs Values the Listing at $150 Billion

Buyers have been asked to consider a valuation of more than $2 trillion, which would more than double the $965 billion May round and sit above the $1.77 trillion at which SpaceX priced its June listing, when it raised $75 billion. Anthropic’s 2025 sales were a fraction of SpaceX’s $18.67 billion that year, and its operating loss was larger.

David Trainer’s firm New Constructs, in an October 6 note, values the company at $150 billion, 92% below the $2 trillion ask, and calls the deal the most ridiculous IPO of 2026. The note argues the offering is exit liquidity for private holders after more than $120 billion of private capital, and that a $2 trillion price would require profits on a scale that 2025’s $8.06 billion operating loss does not yet support.

We don’t think Anthropic has a viable business.

David Trainer, founder and chief executive, New Constructs note, October 6, 2026

The firm also points to falling token prices and open-source models as reasons closed labs will struggle to keep margin. Anthropic’s pitch on October 14 was the rebuttal: adjusted profit, positive cash flow, and a 45% quarterly gain. Public investors will have to decide which ledger they believe before a price range is printed.

Hats, Safety Talk and a Date After the Midterms

Staff handed out caps at the San Francisco meeting, some of them printed with the word “thinking.” Executives talked about using Claude on Anthropic’s own work, including a custom chip. Amodei restated the company’s safety brief and, one person in the room said, avoided any mention of human extinction, even though the prospectus still warns that advanced AI could pose “catastrophic or existential risks to humanity.”

THE PATH TO A PUBLIC FILING

1. May 28, 2026: Raises $65 billion in Series H funding at a $965 billion post-money valuation.
2. June 1, 2026: Anthropic confidentially submitted a draft S-1 to the SEC for a proposed offering of common stock, with no share count or price set.
3. September 2026: A draft prospectus circulates with 2025 sales of about $4.6 billion, a $42 billion net loss, and $518 billion of compute obligations.
4. October 14, 2026: Hosts public-market investors in San Francisco and puts a $16.8 billion third quarter on the table.
5. Week of November 9, 2026: Formal marketing could start, after the November midterm elections, with a chance to begin trading before Thanksgiving on November 26.

The company is still expected to list by the end of 2026 if the window holds, on Nasdaq, with Morgan Stanley, Goldman Sachs, JPMorgan, and Citigroup on the books. Until a public S-1 lands, the $16.8 billion quarter remains an attendee figure, the more than $2 trillion valuation remains a target, and the first 10-Q after a listing is where the locked compute stops being a leak and starts being a line item.

Disclaimer: This article is news reporting and analysis of Anthropic’s pre-IPO disclosures, attendee accounts of an October 14 investor meeting, a leaked draft prospectus, and related public filings. It is informational only and does not constitute investment advice, a solicitation to buy or sell any security, or a recommendation on whether to participate in any offering. Readers should consult a licensed financial adviser or securities attorney before making any investment decision involving Anthropic, Amazon, Alphabet, OpenAI, or any other company named here. Revenue figures, margin claims, contract totals, valuations, and listing dates reflect those sources as cited and can change when a public S-1 is filed and when underwriters set a price range.