# Anthropic's IPO filing shows $16.3 billion in first-half revenue and an $80.7 billion loss that is mostly an accounting charge

About $72.4 billion of the loss comes from revaluing convertible notes as Anthropic's valuation rose, while the filing lists noncancelable cloud commitments to Google, Amazon and Microsoft totaling about $252 billion.

- Published: 2026-10-29T06:14:22.974Z
- Canonical: https://polylog.news/ai/2026-10-29/anthropic-s-ipo-filing-shows-16-3-billion-in-first-half-reve
- Publisher: Polylog (AI desk)
- Section: markets
- Sources: [Anthropic News](https://www.anthropic.com/news/s1-sec), [Fortune](https://fortune.com/2026/10/26/anthropics-s-1/), [Dealroom](https://dealroom.co/news/164610-anthropics-draft-s-1-reveals-16-3b-revenue-80-7b-loss-and-up-to-750b-com/), [South China Morning Post](https://www.scmp.com/tech/big-tech/article/3371504/why-anthropic-has-major-china-problem-ahead-its-blockbuster-ipo)

Anthropic, PBC [filed a Form S-1](https://www.anthropic.com/news/s1-sec) with the U.S. Securities and Exchange Commission (SEC) on Oct. 26 for an initial public offering (IPO) of Class A common stock. It plans to list on Nasdaq under the ticker ANT. The [prospectus](https://www.sec.gov/Archives/edgar/data/0002130357/000162828026067168/anthropicpbc-sx1.htm) reports revenue of $16.286 billion for the six months to June 30, against $1.163 billion a year earlier ([Yahoo Finance](https://finance.yahoo.com/technology/live/anthropic-ipo-live-updates-frontier-ai-lab-discloses-revenue-and-risks-in-highly-anticipated-s-1-filing-141702607.html)). Quarterly revenue rose from $376 million in the first quarter of 2025 to $11.6 billion in the second quarter of 2026. Metered API usage produced 80% of first-half revenue and subscriptions the other 20%.

The $80.7 billion net loss for the half ([Fortune](https://fortune.com/2026/10/26/anthropics-s-1/)) is mostly a non-cash item. About $72.4 billion reflects the higher fair value of convertible notes and related instruments as investors valued Anthropic higher, plus charges tied to note purchase agreements with Google and Amazon, [according to an analysis of the filing](https://longyield.substack.com/p/anthropics-s-1-the-807-billion-loss). Without that charge, the loss is about $8.7 billion. Research and development, which includes compute for training the next models, was $9.7 billion, or 60% of revenue. Anthropic held $112.4 billion in cash and had raised about $141.1 billion by June 30 ([Seoul Economic Daily](https://en.sedaily.com/international/2026/10/27/anthropic-files-for-nasdaq-ipo-seeking-100-billion)).

The fixed obligations deserve more attention than the loss. [Dealroom](https://dealroom.co/news/164610-anthropics-draft-s-1-reveals-16-3b-revenue-80-7b-loss-and-up-to-750b-com/) reports that Anthropic could commit up to $750 billion to compute in coming years. That includes noncancelable cloud contracts with Google for $111 billion, Amazon Web Services for $110 billion and Microsoft for $31 billion, much of it payable whether or not Anthropic uses the capacity.

The terms are not set. Goldman Sachs and Morgan Stanley lead the offering. Press reports put the raise at $100 billion or more and the valuation between $1.5 trillion and $2 trillion, but the filing gives no share count or price ([Dealroom](https://dealroom.co/news/167596-anthropic-files-for-ipo-that-could-value-it-at-2t-raise-over-100b/)). Before the filing, [Euronews](https://www.euronews.com/2026/10/15/anthropic-revenue-jumps-46-to-168bn-as-ai-firm-eyes-record-2-trillion-ipo-valuation) reported third-quarter revenue of $16.8 billion, up about 46% from the prior quarter, and an 11% adjusted operating margin. Those figures are not in the S-1 period. The [South China Morning Post](https://www.scmp.com/tech/big-tech/article/3371504/why-anthropic-has-major-china-problem-ahead-its-blockbuster-ipo) and [The Decoder](https://the-decoder.com/anthropics-planned-mega-ipo-faces-investor-skepticism-over-chinese-rivals-and-political-headwinds/) report that some investors are skeptical because Chinese open-weight models sell at a fraction of Anthropic's prices.

## What this means

The listing would give every private AI lab a public reference price. It would also force Google and Amazon, which hold notes and equity, to report a public value for their stakes. The headline loss is the wrong number to focus on. The real exposure is a revenue base that is 80% metered usage, earned at premium per-token prices, set against compute contracts that are largely fixed. If Gemini 4 Carbon or Chinese open-weight models push per-token prices down, Anthropic's revenue falls while its compute bills to Google, Amazon and Microsoft stay the same. For those cloud providers, the same contracts count as backlog that supports their capital spending. Uber's 2019 IPO is the closest precedent: a company with very large losses and fast growth priced near the bottom of its range and fell on its first day, yet a year later investors were judging it on growth and unit economics. The likelier outcome is that pricing in November is anchored to the growth rate and the compute commitments, not the net loss. Expect the amended filing to add third-quarter numbers within weeks. That read depends on those numbers confirming the roughly $16.8 billion quarter Euronews reported. It is wrong if the amended filing shows growth slowing sharply from that 46% sequential rate, or if a competitor's price cut forces Anthropic to reprice Opus before the roadshow.

## What to watch

- The amended S-1 with third-quarter results and a price range, which will show whether growth held after Opus 5.5 launched at a lower price than Opus 5.
- Whether Alphabet and Amazon disclose gains on their Anthropic notes in their next reports, which would show how much of the IPO value moves to the cloud providers' balance sheets.
- Any Anthropic per-token price cut before the listing, which would show that competition from Gemini 4 Carbon and Chinese open-weight models is reaching the revenue line.