TL;DR
- Anthropic, PBC filed a Form S-1 with the SEC on 26 October 2026 and applied to list Class A shares on the Nasdaq Global Select Market as "ANT"; the price range is blank.
- The S-1 reports revenue of $16.286 billion for the six months to 30 June 2026, up 1,300% from $1.163 billion a year earlier, with a $693 million operating loss.
- The filing describes revenue from token-based usage fees and subscriptions and no advertising product; the advertising figures it reports are Anthropic's own spend, $147 million in 2025.
- More than 11,900 customers generated $100,000 or more of trailing-twelve-month revenue as of 30 September 2026, per the S-1.
Anthropic, the company behind the Claude AI models, filed a Form S-1 registration statement with the US Securities and Exchange Commission on 26 October 2026 and has applied to list its Class A common stock on the Nasdaq Global Select Market under the symbol "ANT." The filing reports revenue of $16.286 billion for the six months to 30 June 2026 and describes that revenue as coming from token-based usage fees and subscriptions. It does not describe advertising as a source of revenue. For marketers, the practical reading is that Claude, as the filing describes it, is not a channel where brands can buy placement.
What Anthropic filed on 26 October 2026
The S-1 on the SEC's EDGAR system was filed by Anthropic, PBC, a Delaware public benefit corporation, and is dated 26 October 2026. An S-1 is the document a company files to register shares for an initial public offering. It is a disclosure document, and much of it is risk factors, financial statements and governance detail rather than strategy.
The prospectus says Anthropic has applied to list its Class A common stock on the Nasdaq Global Select Market under the symbol "ANT." The expected price per share is left blank in this version of the filing ("between $ and $"), so the filing itself gives no offering price or deal size. This article does not discuss valuation and is not investment advice; it looks at what the document says about how Anthropic makes money and what it says about advertising, because that is the part that bears on marketing decisions.
The revenue figures in the S-1
The consolidated statements of operations in the filing give revenue for three full years and two half-years. The table below reproduces those figures as stated in the S-1, in US dollars.
| Period (per S-1) | Revenue |
|---|---|
| Year ended 31 December 2024 | $386 million |
| Year ended 31 December 2025 | $4.585 billion |
| Six months ended 30 June 2025 | $1.163 billion |
| Six months ended 30 June 2026 | $16.286 billion |
The filing gives 2023 revenue as $41 million. It says revenue for the first half of 2026 rose by $15.1 billion, or 1,300%, against the first half of 2025, and that consumption-based and subscription-based revenue rose by $12.1 billion and $3.0 billion respectively over that comparison. The operating loss for the six months to 30 June 2026 was $693 million, against $2.135 billion a year earlier.
The S-1 also warns, in its own words, that Anthropic does not expect revenue to keep growing at comparable rates and cannot assure that it will continue to grow at all. That sentence is standard risk-factor language, but it belongs next to the growth figures.
How the filing says Anthropic makes money
In the section on components of results of operations, the S-1 says Anthropic generates revenue "as customers use Claude through our platform and applications," naming Claude Code, Claude Cowork and vertical solutions for specific industries. Customers enter into "pay-for-intelligence pricing, subscription-based pricing, or both." Usage revenue is recognised based on the quantity of tokens consumed. Subscriptions are generally prepaid monthly or annually, carry usage limits that reset over short periods, and are recognised over the subscription term.
Three other details in the filing describe the customer base:
- Enterprise customers buy directly from Anthropic or through cloud service provider (CSP) marketplaces. Sales through CSP marketplaces were about 48% of total revenue in the six months to 30 June 2026, according to the filing.
- As of 30 September 2026, the S-1 reports more than 11,900 customers with $100,000 or more of trailing-twelve-month revenue, up from more than 950 a year earlier. It also reports more than 1,900 customers at $1 million or more, and about 250 at $10 million or more.
- For individuals, the filing describes Claude Pro and Claude Max subscriptions used by knowledge workers, and free tiers. It lists as a risk that free tiers may cannibalise paid subscriptions and that free access carries compute and support costs.
Nowhere in that description does advertising appear as a revenue line. The revenue model the S-1 sets out is usage and subscriptions.
What the S-1 says about advertising
The word advertising does appear in the filing, but in other contexts. Reading those passages in order gives a clear picture of where advertising sits in Anthropic's business, as the filing describes it.
Anthropic as an advertiser
The financial statement notes say advertising costs are expensed as incurred, and that advertising expenses were $33 million in 2024 and $147 million in 2025, with 2023 advertising not material. In its discussion of the six months to 30 June 2026, the filing says sales, marketing and partnerships expenses rose to $3.168 billion, driven mainly by a $2.7 billion increase in fees paid to channel partners and a $273 million increase in marketing and advertising expenses, "reflecting higher media spend to support product launches." In other words, Anthropic buys media. It is an advertiser.
No advertising product
The filing does not describe an advertising product, an ad-supported tier or sponsored answers. A text search of the main S-1 document finds no use of the words "ads" or "ad-supported." The closest the filing comes to the subject is a risk factor about brand, which says the company's reputation depends partly on its ability to differentiate itself through "product design choices, safeguards, business models, and policies, including our approach to monetization strategies that differ from those of certain competitors." The filing does not name those competitors in that sentence, and it does not spell out which monetization strategies it means. Readers should not put names into that sentence that the filing leaves out.
A careful reading also means saying what the filing does not do. The S-1 does not contain a commitment never to sell advertising. It describes the current revenue model, and that model has no advertising in it. Outside the filing, Anthropic said in a 4 February 2026 post on its website titled "Claude is a space to think" that "Claude will remain ad-free," and that if it needs to revisit that approach it will be transparent about its reasons.
Advertising as a legal matter
A note to the financial statements on commitments and contingencies discloses that Anthropic is subject to several putative class action complaints alleging that it markets and sells Claude subscription plans through false, misleading and deceptive advertising practices. The filing says these matters are in early stages, that Anthropic disputes the allegations and that it intends to defend itself. This concerns how Anthropic advertises its own plans, not an advertising business.
Why this matters for marketers
The marketing question behind this filing is simple: in which AI assistants can a brand pay to appear, and in which can it only earn a mention?
ChatGPT shows ads, which RA has covered in its ChatGPT Ads service. Anthropic's filing, by contrast, describes a business funded by usage fees and subscriptions with no advertising revenue. Taken at face value, that means there is no paid route into Claude's answers today. A brand that wants to be named when someone asks Claude for a supplier, a product or a comparison has to earn it through the same things that drive any AI citation: clear, accurate, crawlable content, consistent facts about the brand across the web, and sources that a model is likely to trust.
That work is what generative engine optimization covers. RA's GEO service and AI SEO service focus on how brands are cited in AI answers, across assistants that sell ads and those that do not.
Two limits on this reading. First, a business model described in an S-1 is a snapshot, and companies change. Second, the filing puts enterprise customers at the centre of the business, describing enterprises "embedding Claude directly into their business-critical workflows," and much of that use sits inside companies' own products and tools, where brand visibility works differently from a consumer chat window. The S-1 does not quantify how much consumer chat usage there is relative to enterprise use.
What this means for Thai marketers
The S-1 is a US securities filing and mentions Thailand only in a standard selling restriction, which says the prospectus is not a public offering in Thailand. Its relevance for Thai brands is indirect. When planning AI visibility, it helps to split assistants into two groups: those with a paid ad route, such as ChatGPT, and those where, on the evidence of the company's own filing, visibility can only be earned. Claude sits in the second group as of 26 October 2026.
For a Thai brand, the practical checks are the same as for any AI search work. Make sure both the Thai and English versions of key pages state the facts about the business plainly, keep product and service information consistent across marketplaces, directories and the brand's own site, and check how assistants currently describe the brand by asking them directly in both languages.
FAQ
Does Anthropic sell ads in Claude?
No, the S-1 filed on 26 October 2026 does not describe any advertising product or advertising revenue. It describes revenue from token-based usage fees and subscriptions, though it does not promise never to sell ads.
How much revenue did Anthropic report?
The S-1 reports $16.286 billion of revenue for the six months ended 30 June 2026, against $1.163 billion a year earlier. Full-year revenue was $41 million in 2023, $386 million in 2024 and $4.585 billion in 2025.
Where will Anthropic shares be listed?
Anthropic has applied to list its Class A common stock on the Nasdaq Global Select Market under the symbol "ANT." The price range is blank in the filing, and this article does not offer any view on the shares.
Does Anthropic spend money on advertising itself?
Yes, the filing reports advertising expenses of $33 million in 2024 and $147 million in 2025. It also says marketing and advertising expenses rose by $273 million in the first half of 2026 compared with a year earlier.
Can a brand pay to appear in Claude's answers?
Not according to the business model in the S-1, which contains no paid placement. Visibility in Claude has to be earned through content and sources that the model is likely to cite, which is the focus of GEO work.
The bottom line
Anthropic's S-1 describes a company that earns its revenue from people and businesses paying to use Claude, through usage fees and subscriptions, and that spends money on advertising as a buyer rather than selling it. For marketers, the result is a split in the AI assistant market between assistants with a paid route and assistants where visibility is only earned. If you want to know how your brand currently shows up in AI answers and what to fix, talk to RA's GEO team.
