Anthropic files for potentially record-breaking stock market valuation in key test for AI industry

Dario Amodei, the CEO of Anthropic, in Bengaluru, India, on 16 February 2026. Photograph: Priyanshu Singh/ReutersView image in fullscreenDario Amodei, the CEO of Anthropic, in Bengaluru, India, on 16 February 2026. Photograph: Priyanshu Singh/ReutersAnthropicAnthropic files for potentially record-breaking stock market valuation in key test for AI industryMarket debut of firm behind Claude chatbot will be one of largest in US history, a test of AI boom’s financial viability

Anthropic has publicly filed for a stock market listing in what is slated to be one of the largest debuts in history. The company’s float on the US market will serve as a test of the financial viability of the multitrillion-dollar AI boom.

Analysts and investors have valued the San Francisco-based company, founded in 2021, at more than $1.5tn. The company, which will will list under the symbol ANT, confidentially filed with US financial regulators for an initial public offering in June.

“We believe AI is one of the most consequential technologies in human history,” the company’s investor prospectus reads. Anthropic researchers and executives have trumpeted the transformative power of AI while simultaneously warning of its potential to cause human extinction.

A leader in the race to create powerful artificial intelligence models and a bellwether of the American AI boom, Anthropic’s chatbot Claude is its flagship product, which offers text generation features as well as advanced coding and cybersecurity capabilities. CEO Dario Amodei founded the company after quitting OpenAI, the maker of ChatGPT.

Anthropic’s audited filings will offer the first public glimpse of its financial health, which have been the object of intense speculation in recent months as questions of a potential AI bubble swirl.

The company detailed rapidly rising revenue in the prospectus: $41m in 2023, $386m in 2024, $4.585bn in 2025 (an increase of more than 1,000%), then $16.286bn in the first six months of 2026 alone. The company disclosed that, as of the end of June, it had raised $141.1bn.

Despite the increasing revenue, Anthropic disclosed a net loss of $80bn for the first half of 2026.

Anthropic has focused on businesses as its primary paying customers, unlike OpenAI, which has courted everyday consumers for ChatGPT. As of 30 September, Anthropic said it had more than 14,000 enterprise customers – 11,900 of which had $100,000 or more of revenue, more than 1,900 that had $1m or more revenue and about 250 enterprise customers that had $10m or more revenue.

“The speed and depth of our enterprise customer adoption are powerful evidence of Claude’s position at the frontier of AI,” Anthropic executives wrote.

The filing contains some of the hyperbolic language characteristic of AI companies predicting the miraculous potential of their technology. Describing the potential of AI agents, semi-autonomous chatbots that can carry out tasks on behalf of users, Anthropic executives wrote: “The result is something without historical precedent: what we refer to as a country of geniuses in a datacenter, available to every organization and sector of the economy.”

Investing in Anthropic and the development of a model that the company claims could revolutionize knowledge work across industries comes with a great deal of risk. Anthropic listed more than 90 pages of potential to its business. For one, a “substantial portion” of the company’s revenue comes from a limited number of customers, and losing any of them could put a huge dent in their revenue. A quarter of Anthropic’s revenue comes from its top five customers, though no single customer represents more than 10% of its business.