Anthropic files for potentially record IPO, revealing huge costs and risks

Anthropic's bid to go public is turning a private AI company into a public test of the industry's economics. The developer of Claude filed its prospectus on October 26, setting up what could be the biggest initial public offering in history, according to Bloomberg.

The financial contrast is stark. Anthropic reported $16.3 billion in revenue and an $80.7 billion loss for the first half of 2026. Its filing also disclosed almost $650 billion owed for computing, Axios reported.

Those figures put two questions at the centre of the offering: how much demand Anthropic can capture, and how much it must spend to serve it. Bloomberg described the prospectus as exposing extraordinary growth alongside uncertainty about demand and the spending needed to continue.

On October 26, the initial financial assessments pulled in different directions. Business Insider saw strong profit potential because revenue was growing much faster than expenses. The Economist cautioned against expecting supersize profits soon. These are competing readings of the business, not evidence that profitability is settled.

The market backdrop added pressure. CNBC reported that the AI trade had been sputtering and interest rates were rising, giving the offering importance beyond Anthropic itself.

On October 27, attention widened to the prospectus's warnings. Euronews reported risks involving increasingly autonomous systems, cyberattacks and weapons, alongside financial and regulatory challenges. SecurityWeek reported that Anthropic presents the IPO itself as a step toward mitigating AI risks.

The same day, investors began examining what public ownership would actually mean. Inc.com highlighted the founders' intention to retain control, while TechCrunch examined the company's complex governance structure.

There were also signs of renewed enthusiasm for AI spending. On October 27, MarketWatch reported gains in CoreWeave and other AI stocks as investors studied the filing. On October 28, TechCrunch reported that large note conversions revealed the extent of Amazon's ownership, sharpening attention on who stands to benefit.

Anthropic has filed to go public, but the listing remains ahead. The Conversation reported an expected Wall Street debut in November at a valuation of up to $2 trillion. That is a potential valuation of the company, not the amount the share sale would raise.

The filing also reveals substantial financial resources. According to CNBC, Anthropic holds $131.7 billion in cash, more than every non-bank US company except Berkshire Hathaway and Alphabet. That cash sits alongside enormous computing obligations and continuing questions about future profitability.

The immediate milestones are whether the expected November listing proceeds and what valuation it achieves. The operating question is whether revenue can keep growing faster than expenses while Anthropic meets its computing commitments.

Investors must also assess how much influence public shareholders will have. The control arrangements examined by The Verge make governance a central part of the offering, alongside the financial and technological risks.