Anthropic IPO Filing Shows Customers Paying Over $1M A Year Has Nearly Doubled Since April

The Claude creator reported $16.3 billion in first-half 2026 revenue, up from $1.16 billion a year earlier, alongside an $80.7 billion net loss.

• Anthropic has not yet disclosed its IPO price range or the number of shares it intends to sell.
• Goldman Sachs and Morgan Stanley, which also held lead roles in SpaceX’s blockbuster IPO, will lead Anthropic’s offering alongside 20 other underwriters.
• Anthropic’s proposed share structure gives its founders’ LLC 50.1% of the company’s voting power through a single Class F share, even after the company goes public.

Anthropic (ANTHZZX) on Monday released its public IPO filing, which showed that more than 1,900 customers paid the Claude AI maker at least $1 million over the past year, nearly double the tally in April.

The company is targeting a public listing in November, according to The Wall Street Journal, though the timing could change. The report said Anthropic’s offering could raise $100 billion or more at a valuation of $1.5 trillion to $2 trillion.

The filing does not yet disclose Anthropic’s target valuation or the number of shares it plans to sell. Those details are expected in an updated filing after the company gauges investor feedback. Anthropic plans to list on Nasdaq under the ticker ‘ANT’.

The filing breaks down the company’s customer base into three tiers based on revenue:

Customer tier	Trailing 12-month revenue	Number of customers (as of Sept. 30)
Tier 1	$100,000 or more	More than 11,900
Tier 2	$1 million or more	More than 1,900
Tier 3	$10 million or more	Approximately 250

On Stocktwits, ANTHZZX was among the platform’s top trending tickers at the time of writing, while retail sentiment around the company was in ‘extremely bullish’ territory.

Anthropic Revenue Reaches $16.3 Billion In First Half

Anthropic’s filing showed revenue of $16.3 billion in the first half of 2026, up from $1.16 billion in the same period a year earlier. Retail traders on Stocktwits highlighted the company’s financials.

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Revenue growth also outpaced the increase in Anthropic’s computing costs. Revenue rose 1,368% year over year in the second quarter, while compute and infrastructure costs increased 300%.

The company reported a net loss of $80.7 billion, largely driven by a $72.4 billion accounting charge related to convertible notes. As Anthropic’s valuation increased, the value of those notes rose, creating an accounting expense.

The filing also lists $8.76 billion in “other expenses” for the first half, separate from the convertible-note charge, but does not explain what the category includes in its summary pages.

Meanwhile, spending on sales, marketing and partnerships climbed 26-fold to $3.17 billion in the first half from $120 million a year earlier.

Goldman Sachs, Morgan Stanley To Lead Anthropic IPO

Goldman Sachs and Morgan Stanley will lead Anthropic’s IPO, with 20 other underwriters named in the filing. The same two banks held the lead roles in SpaceX’s offering this year.

Morgan Stanley was also named stabilization agent, responsible for managing the stock’s early trading following the offering.

The filing lists CEO Dario Amodei among the company’s largest disclosed individual shareholders, with ownership or control of 245 million shares. Daniela Amodei, Tom Brown, Jack Clark, Jared Kaplan, Sam McCandlish and Christopher Olah each own more than 200 million Class A shares, according to the filing.

Public investors will have limited voting power under Anthropic’s proposed five-class share structure:

• Class A: Shares sold to the public, with one vote per share.
• Class N: Held mainly by strategic partners. These shares carry no voting rights and convert to Class A when sold to an outside party.
• Class F: A single share held by the seven co-founders through an LLC, carrying 50.1% of all votes.
• Class T: Held by the Long-Term Benefit Trust, an independent body that elects a majority of the board.
• Class E: Reserved for employees, with no economic value and voting rights limited to specific matters.

The structure gives the founders and the Long-Term Benefit Trust substantial influence over the company’s board, even after it goes public.

Anthropic Ties Public-Benefit Fund Grants To IPO Price

Earlier this month, Anthropic said it would allocate 5% of its shares to a public-benefit fund and could issue additional shares as the company’s valuation increased.

The filing identifies the IPO price as the baseline for future grants. For every 50% increase in the share price above the previous milestone, the board may authorize an additional grant of up to 2% of outstanding shares. Each grant remains at the board’s discretion.

Anthropic Flags AI Safety And Computing Risks

The filing also outlines risks tied to training advanced AI models, keeping pace with their capabilities and securing enough computing capacity. Anthropic said it has experienced failed or underperforming training runs that consumed resources with little or no benefit. Such runs can take weeks or months.

The company said it uses Claude to help develop future versions of the model, warning that this process could accelerate AI capabilities faster than its safety measures can keep pace, and that it might not recognize a significant acceleration until after it has occurred.

Anthropic cited its decision to limit the initial release of its Mythos model through Project Glasswing as an example of a precaution it may take again. Delaying a release, however, could give competitors an opportunity to move ahead.

Computing capacity is another constraint. Anthropic said it has requested more capacity from cloud providers than they were willing to supply.

The filing also addresses customer complaints over changes to usage limits, including allegations that the company’s disclosures about model access were inadequate or misleading.

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