Anthropic filed its Form S-1 with the U.S. Securities and Exchange Commission on Monday, formally launching what is set to be the largest initial public offering of the AI era and making the Claude developer the first frontier AI lab to reach the public markets. The company said it intends to list its Class A common stock on the Nasdaq Global Select Market under the ticker symbol "ANT," with Goldman Sachs and Morgan Stanley acting as lead underwriters. The number of shares to be offered and the price range have not yet been determined.
The filing ends months of speculation about when the San Francisco-based public benefit corporation would make its move, and it hands investors their first complete look at the financial engine behind one of the world's most valuable private companies. Press reports have pegged the expected valuation at more than $1.5 trillion, and outlets including Investing.com report that a mid-November listing remains on track. For a full picture of how this fits into the industry's financing wave, follow our breaking AI news coverage as the listing approaches.
The Revenue Story: A 14-Fold Jump
The S-1's headline figure is growth that has almost no precedent at this scale. Anthropic's revenue was $41 million in 2023, $386 million in 2024, and $4.6 billion in 2025, according to the filing. In the first six months of 2026 alone, revenue reached $16.3 billion, up from $1.2 billion in the first half of 2025 — roughly a fourteen-fold year-over-year increase, a figure The New York Times highlighted in its coverage of the filing.
The customer base has expanded just as quickly. Anthropic said customers generating $100,000 or more in trailing-twelve-month revenue grew from more than 950 in September 2025 to more than 11,900 a year later. Consumption-based revenue — driven by API usage and enterprise contracts rather than subscriptions — rose from $789 million, or 17 percent of total revenue, to $3.2 billion, or 20 percent, over the comparison periods.
An $80 Billion Loss — With an Asterisk
The net loss figures look alarming at first glance: $1.5 billion in 2023, $8.3 billion in 2024, $42 billion in 2025, and $80.7 billion in the first half of 2026. But the composition of those losses matters enormously. Of the $80.7 billion first-half loss, $72.4 billion came from a non-cash change in the fair value of convertible notes, derivative liabilities, and SAFEs — accounting adjustments that largely reflect the company's soaring valuation rather than money actually spent.
Strip those out and the operating picture is strikingly different. Anthropic's operating loss narrowed to $693 million in the first half of 2026 from $2.1 billion a year earlier, while interest income of $1.1 billion — a product of that enormous cash pile — offset a meaningful share of remaining costs. The company is not yet profitable on an operating basis, but the trajectory of the core business is far healthier than the headline net loss suggests.
A Fortress Balance Sheet
Anthropic disclosed that it had raised an aggregate of $141.1 billion in capital as of June 30, 2026, and held $112.4 billion in cash and cash equivalents, plus $19.3 billion in short-term investments, with a further $3.2 billion available under a credit facility. Those reserves give the company more liquid firepower than most companies in public markets and reduce its dependence on the IPO proceeds, whatever the final size of the raise.
Compute Commitments Stack Higher
The filing also quantifies the cost of staying at the frontier. In subsequent events disclosed for the period after June 30, 2026, Anthropic said it entered into new and amended lease and commercial agreements to secure additional compute and infrastructure capacity, carrying aggregate future minimum payment obligations of approximately $245 billion, with arrangements commencing between 2026 and 2036 and terms running as long as 20 years. It also disclosed roughly $21 billion in short-term commitments. Yahoo Finance's analysis of the filing put the company's total locked-in computing commitments at around $430 billion.
The hardware side of those commitments is equally specific. Anthropic's S-1 describes an agreement with AMD covering Helios rack-scale systems built on Instinct MI450 GPUs, with AMD committing to purchase up to $5 billion of a class of Anthropic stock if certain conditions are met. Claude is distributed across all three major cloud platforms — Amazon Web Services, Google Cloud, and Microsoft Azure — under joint go-to-market arrangements, and the company has note purchase agreements with Google, Amazon, and Broadcom.
Safety Warnings Enter the Prospectus
Consistent with its structure as a public benefit corporation, Anthropic's risk factors deal candidly with the technology's dangers. Coverage by Barron's of the filing highlighted the company's disclosures around catastrophic risks from advanced AI, and CNN noted that the market debut arrives amid continuing public debate about AI safety. The filing also details governance mechanics unusual for a public company, including a new class of non-economic stock reserved for employees and a September 17 forward stock split that adjusted all per-share figures retroactively.
What Happens Next
The S-1 is the starting gun, not the finish line. Anthropic will now tour institutional investors, set a price range, and pick a listing date, with press reports pointing to November. How the market prices a company burning cash at the frontier — but sitting on $112.4 billion in cash and compounding revenue at rates traditional software companies never approached — will shape the fundraising calculus for every AI lab still watching from the sidelines.
For continued AI industry coverage, including filings, valuations and the companies reshaping the market, follow along as the story develops.
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