Anthropic files for IPO as AI race heads for public markets

Anthropic filed for an initial public offering on Monday, taking the first formal step toward a public listing that could arrive before OpenAI’s, according to reporting from TechCrunch and ETCIO.com. The move lands at a moment when the AI sector is still burning through capital, but investors are also being asked to digest growth figures that would have been extraordinary in almost any other software business.

The filing, which follows weeks of leaked draft S-1 documents, sets Anthropic up to trade under the ticker ANT. It also gives the market a rare look at the scale of the company’s revenue buildout, its losses, and the control structure that could keep ordinary shareholders on the sidelines even after the company goes public.

What Anthropic disclosed in its IPO filing

Anthropic’s filing sketches a company that has scaled quickly while still remaining deeply unprofitable. TechCrunch reported that the company said first-half 2026 revenue reached $16.3 billion, up from $1.2 billion in the same period a year earlier. At the same time, first-half 2026 operating losses narrowed to $693 million from $2.1 billion in the first half of 2025.

The filing also included a headline-grabbing net loss figure of $80.7 billion for the first half of 2026, which Anthropic said was mainly tied to noncash convertible-debt accounting adjustments. That distinction matters: the number is large enough to dominate any quick reading of the filing, but it does not mean the company burned that amount of cash in the period.

For a public market already trained to scrutinize AI economics, the filing creates a more nuanced picture than the raw loss number suggests. Revenues are climbing sharply. Operating losses are improving. But the company is still not profitable, and it is entering public markets while investors are being asked to weigh explosive demand against unusual accounting noise.

By the numbers

Why it matters

This IPO is important because Anthropic could become one of the earliest major AI model developers to test public-market demand at scale, and it may do so before OpenAI if Bloomberg’s reporting, cited by ETCIO.com, holds up. That would give investors an early referendum on the valuation, durability and governance of frontier AI companies.

It also matters because Anthropic’s filing may become a template for how AI companies explain their finances to public investors. The combination of soaring revenue, narrower operating losses and a massive net loss tied to accounting adjustments is likely to become a familiar pattern in next-generation AI offerings. If the market accepts that story, the bar for other AI firms may shift. If it does not, the reaction could shape financing strategies across the sector.

There is a governance angle as well. TechCrunch reported that Anthropic has structured voting power so that public shareholders are expected to have limited practical control. In an industry where investors are not only buying growth but also betting on leadership, safety and long-term direction, that kind of setup is likely to draw close attention.

How Anthropic plans to stay in control

Anthropic’s filing says seven co-founders will control Founder LLC, which will hold 50.1% of shareholder voting power. That arrangement means the company is going public without giving outside shareholders meaningful control over the strategic direction of the business, at least in the usual one-share, one-vote sense.

TechCrunch also reported that the Long-Term Benefit Trust, created in 2023, can appoint most of the board. Anthropic says the governance structure is meant to protect its AI safety mission. That is a distinctive argument in public markets: the company is not just asking investors to buy into a business model, but to accept a control system explicitly designed to keep mission priorities above shareholder pressure.

That tension is likely to sit at the heart of the IPO. Supporters may see it as a safeguard against short-termism in a powerful technology business. Skeptics may see it as a reminder that public investors will be buying economic exposure without equivalent influence.

“may not achieve or sustain profitability in the future”

Anthropic also warned in the filing about the possibility of “catastrophic or existential risks to humanity,” underscoring that the company is presenting itself to the market not only as a software business, but as an AI lab operating in a field with unusually high-stakes risk language embedded in its disclosures.

What the customer figures say about demand

The customer data in the filing helps explain why public-market investors are paying attention. As of the end of September, more than 11,900 customers were spending at least $100,000 a year with Anthropic. That group included 1,900 customers spending at least $1 million annually, and about 250 customers spending at least $10 million a year.

Those figures suggest a company with a substantial enterprise base, not just a handful of marquee users. They also hint at a steep revenue concentration profile, with a smaller top tier of customers likely doing a large share of the heavy lifting.

For enterprise software investors, the scale matters in two ways. First, it indicates that companies are already willing to budget real money for frontier AI tools. Second, it raises the usual questions about retention, pricing power and how much of the current spend is tied to a limited number of large accounts.

Customer mix at a glance

• More than 11,900 customers spent at least $100,000 annually.
• 1,900 customers spent at least $1 million annually.
• About 250 customers spent at least $10 million annually.

Background: how the company got here

An IPO is a company’s first sale of shares to the public, and Anthropic’s filing comes after weeks of leaked S-1 drafts, according to TechCrunch. The move comes against the backdrop of Anthropic’s position as a major AI model developer and a direct OpenAI competitor. That rivalry is not just product-deep; it now extends into the sequence and timing of each company’s route to the public market.

Anthropic is not going public from a standing start. It is already one of the most closely watched names in frontier AI, and the filing shows a business scaling fast enough to challenge assumptions about how quickly AI revenue can ramp once customers start spending at enterprise levels. The question is whether that growth can be sustained, financed and translated into eventual profitability.

Background knowledge around IPOs also helps frame the filing. The SEC reviews IPO documents before a company can list, and the process typically requires additional revisions and disclosures before trading can begin. That means Monday’s filing is a milestone, not a final stop.

ETCIO.com, citing Bloomberg, reported that Anthropic had been considering an IPO as soon as October, while OpenAI leadership reportedly expects Anthropic to go public first. Bloomberg’s reporting, as summarized by ETCIO.com, also said OpenAI had been targeting a fall listing and may consider an IPO as soon as 2027. Both companies, according to that report, have already filed confidentially with the SEC.

If that sequence proves accurate, Anthropic would become the first of the two to test the market. But the timing remains a live question, and the gap between filing and listing can still change depending on market conditions, regulatory review and internal readiness.

How does Anthropic compare with OpenAI on timing?

Anthropic appears to be ahead in the public listing process, while OpenAI may be thinking about a later IPO window, according to ETCIO.com’s summary of Bloomberg reporting. That does not guarantee Anthropic will list first, but it does suggest the company may have more immediate momentum toward the public market.

Below is a timeline based on the reporting and filing details in the fact sheet:

What the control structure means for investors

Anthropic’s voting arrangement is one of the most striking parts of the filing. Founder LLC, controlled by seven co-founders, will hold 50.1% of shareholder voting power. The Long-Term Benefit Trust can appoint most of the board. Together, those mechanisms suggest the company is trying to separate ownership from control in a way that preserves its preferred direction even after shares trade publicly.

In practical terms, that can limit the leverage of ordinary shareholders. They may be able to buy stock, benefit from gains and vote on some issues, but they are unlikely to shape the company in the same way they could at a more conventional public company.

That may not bother all investors. Some large funds may value mission stability, particularly if they believe frontier AI companies face pressure to compromise on safety in order to chase quarterly results. But the structure could also deter investors who want ordinary corporate governance rights to match their capital at risk.

What happens next

Several key questions remain unresolved. Anthropic has not disclosed its target IPO proceeds or proposed share price, so the size of the offering is still unknown. The market also does not yet know whether the company will stick to the current timetable, or how the SEC review process may shape the final prospectus.

The biggest near-term watch points are straightforward:

1. How much money Anthropic plans to raise.
2. What share price range it will seek.
3. Whether the IPO timing stays on track.
4. Whether OpenAI follows with its own listing and when.

Those decisions will tell investors a lot about how management sees current market conditions. They will also reveal whether Anthropic believes the public markets are ready to underwrite a high-growth AI company with a safety-centered governance model and a still-unsettled path to profitability.

If the listing goes ahead, it will do more than add a new ticker to the market. It will help set the tone for how public investors value frontier AI businesses, how much control founders can keep after an IPO, and how much patience markets are willing to extend to companies that are growing fast but still asking shareholders to wait for profits.

FAQ

Why is Anthropic’s IPO significant?

Anthropic’s IPO is significant because it could be one of the first major public-market tests for a frontier AI model developer. If the company lists before OpenAI, it may shape how investors value AI growth, losses and founder-controlled governance structures.

How large is Anthropic’s revenue base now?

Anthropic said first-half 2026 revenue reached $16.3 billion, up from $1.2 billion a year earlier. That sharp increase suggests rapid commercial adoption, especially among large enterprise customers.

What does Anthropic’s governance structure look like?

Seven co-founders will control Founder LLC, which holds 50.1% of shareholder voting power, and the Long-Term Benefit Trust can appoint most of the board. The structure is designed to preserve Anthropic’s AI safety mission, but it limits ordinary shareholder control.

Has Anthropic said how much it wants to raise in the IPO?

No. Anthropic has not disclosed target IPO proceeds or a proposed share price, so the eventual size and valuation of the offering remain unknown.

Could OpenAI go public after Anthropic?

Yes. According to ETCIO.com’s summary of Bloomberg reporting, OpenAI may consider an IPO as soon as 2027, and its leadership expects Anthropic to go public first. That sequence is not guaranteed, but it is what the current reporting suggests.