Anthropic's blockbuster initial public offering filing earlier this week offered the world its first clear look inside the finances of a frontier AI lab. Now, as analysts, economists and locals digest the over-300-page document, the company faces new questions about slowing revenue growth, a unique governance structure that concentrates voting power among its co-founders, and whether it can sell Wall Street on what one analysis called a 'build God or die trying' business plan.
The S-1 revealed that the AI giant generated $16.29 billion in revenue in the first half of 2026 with an 85 per cent gross margin. The Verge reported that Anthropic could start trading as soon as next month at a valuation between $1.5 trillion and $2 trillion. The filing also showed that CEO Dario Amodei and his six co-founders have special voting power through a single Class F share equal to 50.1 per cent of total voting power on matters brought to a shareholder vote, a structure Anthropic itself describes as having 'no direct public company precedent'.
A closer look at the numbers has raised concerns about the trajectory of that growth. The company's revenue grew roughly 144 per cent in the second quarter compared with the first, but slowed to roughly 47 per cent in the third quarter. 'What the prospectus didn't tell us is management's expectations around the sequential slowdown in the growth rate,' Morningstar chief equity strategist Michael Field told CNBC.
The filing reveals that 'substantially all' of the company's cost of revenue is tied up in compute and infrastructure. Nick Patience of the Futurum Group told CNBC the data does not show 'how much of the forward commitment is earmarked for training the next generation of models versus serving customers'. That split, he added, 'dictates future margins'.
The speed of Anthropic's rise has nonetheless caught the attention of venture capital. Bessemer Venture Partners partner Byron Deeter told Business Insider: 'There's no company that's gone from zero to where they are today in this period of time.' Deeter said he had conviction the company could challenge OpenAI, despite critics dismissing it as a 'FOMO bet' by investors who had missed out on OpenAI. Bessemer has invested $800 million in Anthropic since 2024 and holds an almost 1 per cent stake.
One analysis of the filing said Anthropic appeared to be pinning its future on dramatic growth. The S-1 shows 80 per cent of revenue in the last three months came from models released in the last six months. The analysis said doing things that look like trying to build a machine god was the only way to avoid going bankrupt.
The IPO is already prompting speculation about its effects in San Francisco, where Anthropic is headquartered. The average home price in the city is about $1.7 million, according to Redfin data cited by KQED. But San Francisco's chief economist, Ted Egan, said the impact on the city's budget would be 'modest' at best. UC Berkeley's Enrico Moretti said Anthropic's IPO may produce fewer new jobs than previous IPOs because the company already had plenty of capital and the AI industry as a whole had not been 'capital-constrained'.
Berber Jin of the Wall Street Journal told KQED that early Anthropic employees had pledged up to half their wealth to philanthropic causes. Jin said the chatter among early employees was about donating money to AI safety nonprofits, reflecting the effective altruism movement's popularity among the company's earliest hires.
The final valuation of the IPO itself remains unknown. Anthropic says it will be 'determined by negotiations among us, the selling stockholders, and the representatives.'
Anthropic’s S-1 shows that research and development (R&D), not serving customers, uses most of the company’s compute: at least two-thirds of its chip spending goes to model training, research and internal use of Claude.
$8.95B on compute in the first half of 2026, but only $2.38B of its costs went to serving paying customers
Serving paying customers takes barely a quarter of that compute and already brings in far more revenue than it costs.
Those customers cost $2.38B to serve against $16.29B in revenue, leaving 85 cents per dollar, up from 12 cents a year earlier.
Because Anthropic buys most capacity 12 to 18 months ahead, surging demand lifted revenue per compute dollar from $0.40 in Q1 2025 to $2.08 in Q2 2026.
The IPO will be one of the largest in history, minting thousands of millionaires and cementing AI as the dominant tech industry, but the slowing revenue growth rate raises questions about whether the AI boom is peaking or competition is catching up.
The unique governance structure giving 50.1% voting power to co-founders will test public market appetite for founder-controlled companies.
The local economic impact on housing, philanthropy and services in San Francisco provides a real-world case study of how AI wealth transforms an urban economy.
Background
Anthropic was founded in 2021 by former OpenAI employees including Dario and Daniela Amodei. It has focused on building large language models with an emphasis on safety, most notably the Claude family of models. The company filed its S-1 earlier this week for an IPO on the Nasdaq with an estimated valuation of $1.5 trillion to $2 trillion.
Key Perspectives
Byron Deeter, Bessemer Venture Partners: Called the speed of Anthropic's rise unprecedented and said he had conviction the company could challenge OpenAI, dismissing the view it was a 'FOMO bet'.
Michael Field, Morningstar: Said the prospectus did not provide management's expectations around the sequential slowdown in the growth rate.
Nick Patience, Futurum Group: Said investors cannot see from the filing what share of forward compute commitments is for training versus serving customers, which dictates future margins.
Ted Egan, San Francisco chief economist: Said the IPO's impact on the city's budget would be 'modest' and not noticeable to everyone.
Enrico Moretti, UC Berkeley: Said because Anthropic was not capital-constrained before the IPO, it is unlikely to trigger the wave of job creation seen after previous Bay Area tech IPOs.
Berber Jin, Wall Street Journal: Told KQED that early employees had pledged up to half their wealth, largely to AI safety nonprofits.
What to Watch
The final valuation at pricing, which will set the tone for the AI investment landscape.
How public market investors react to the governance structure that hands 50.1% voting power to the co-founders.
Whether Anthropic can re-accelerate revenue growth in the fourth quarter or whether the slowdown reflects competitive pressure from open-source models.
The company's ability to allocate compute between serving customers and training its next generation of models.
12 claims in this story checked against 3 sources: 10 supported.
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SupportedAnalysts are examining Anthropic’s slowing revenue growth.Tech: “But Anthropic's meteoric revenue growth slowed in the third quarter.”
SupportedAnalysts are examining the co-founders’ voting power in the IPO filing.Tech: “Seven co-founders, including CEO Dario Amodei, have special voting power through a single Class F share equal to 50.1% of total voting power over matters brought to a shareholder vote.”
SupportedA SemiAnalysis analyst cites more than $70 billion in ARR.The Verge: “what we saw here was a company that has efficiently scaled to an amazing level, with a $1 trillion-plus valuation, $70 billion-plus of ARR in a very short amount of time.”
Partly supportedThe SemiAnalysis analyst cites 85% margins.The Verge: “Anthropic had negative 94 percent gross margins on inference two years ago. Now they have a positive 85 percent margin”
SupportedAnthropic’s revenue growth slowed from roughly 144% in Q2 to roughly 47% in Q3.Tech: “It grew approximately 144% in the second quarter compared to the first quarter, followed by roughly 47% in the third quarter.”
SupportedThe co-founders’ Class F share carries 50.1% of voting power on matters brought to a shareholder vote.Tech: “Seven co-founders, including CEO Dario Amodei, have special voting power through a single Class F share equal to 50.1% of total voting power over matters brought to a shareholder vote.”
Not in the sourcesAnalysts, economists and locals are digesting the filing.KQED News: “And speculation has already begun about the impact this kind of cash could have on the Bay Area.”
SupportedThe filing provides the world’s first clear look inside a frontier AI lab’s finances.The Verge: “It’s our first look inside of the finances of one of the leading frontier models.”
SupportedOne analysis called Anthropic’s business plan “build God or die trying.”The Verge: “Anthropic’s business plan: Build God or die trying.”
SupportedThe S-1 reported $16.29 billion in first-half 2026 revenue and an 85% gross margin.Tech: “Anthropic reported its cost of revenue as $2.38 billion in the first half of 2026, booking $16.29 billion in revenue during the same period and implying a gross margin of 85%.”
SupportedThe Verge reported Anthropic could begin trading as soon as next month at a valuation of $1.5 trillion to $2 trillion.The Verge: “it could start trading as soon as next month at a valuation of anywhere between $1.5 trillion and $2 trillion.”
SupportedMichael Field said the prospectus did not disclose management’s expectations for the sequential slowdown in growth.Tech: ““What the prospectus didn't tell us is management's expectations around the sequential slowdown in the growth rate,” said Michael Field, chief equity strategist at Morningstar.”
