Four takeaways from Anthropic’s potentially record-breaking stock market filing

Explainer Four takeaways from Anthropic’s potentially record-breaking stock market filing The AI company’s first public financial disclosures reveal explosive growth, huge costs and risks ranging from cyber-attacks to the limits of safeguards

Anthropic has filed to go public on the US stock market, revealing for the first time the AI research lab’s financials and all the risks – more than 90 pages of them – that might negatively impact its business.

The company’s investor prospectus, released Monday, veers from hyperbolic predictions about AI’s “incredible potential” to existential risks of the technology to the reality of its current business: explosive but incredibly expensive growth. The filing to US financial regulators, known as an S-1, provides the public’s first look at an audited version of Anthropic’s finances.

Here are some of the key takeaways from Anthropic’s lengthy S-1.

Here’s what you need to know: Anthropic is making a lot of money. It’s also losing a lot of it. The five-year-old firm has been valued between $1.5 and $2tn by some investors but did not list a target valuation in its S-1. Founded in 2021, the company has seen explosive growth every year of its existence.

Anthropic brought in $16.3bn in revenue and lost $80 bn in just the first half of 2026, though much of that was due to a $72.4bn one-off charge. In 2025, the company brought in $4.585bn and lost roughly $33.9bn, per the filing.

Securing computing power accounts for the vast majority of Anthropic’s costs. The company spent nearly $9bn on AI infrastructure in the first half of this year, up from $2.3bn in the same period last year.

Anthropic, unlike OpenAI, has made it clear that its customers are largely other businesses. “Frontier AI is most valuable in real-world settings, as deployment across enterprises is where economic impact is greatest,” the company executives wrote in the filing.

The company said its top 5 customers account for 25% of its business – which makes it risky business.

Anthropic says there is considerable potential for AI to reach levels of intelligence that would be akin to what its executives called “‘a country of geniuses in a datacenter’ – millions of virtual agents with the ability to revolutionize every area of human endeavor: software, physics, math, biology, medicine, finance, economics, commerce, robotics, military and intelligence capabilities”. Noticeably, the company mentioned military capabilities despite being embroiled in a standoff with the Trump administration over its refusal to limit restrictions on the way the Department of Defense could use Claude.

The company highlighted four specific categories of opportunity at the start of the filing: Acceleration of progress in biology and medicine; economic growth; spreading said growth globally; and streamlining government services (such as social services and medical programming).