The key facts

  • Anthropic filed its S-1 with the SEC on Monday; revenue for the first half of 2026 was $16.3 billion, up from $1.2 billion a year earlier
  • More than half of customers spending $100,000 or more per year use both the Claude platform and first-party applications — up from about 30% at the end of last year
  • Among the risks, the company cites growing perception of it as a competitor by Amazon, Google, and Microsoft, as well as concentration among its largest customers

IPO filing and key financial figures

Anthropic has officially filed with the U.S. Securities and Exchange Commission (SEC) to go public. According to TechCrunch, the S-1 was filed on Monday, and in it the company describes a strategy for retaining enterprise customers through a Revenue for the first half of 2026 came to $16.3 billion, up from $1.2 billion in the same period last year.

The ecosystem as a retention mechanism

According to the S-1, more than half of customers spending at least $100,000 per year use both the Claude platform and a first-party application — such as Claude Code or Cowork; at the end of last year that figure was about 30%. As of September 30, Anthropic had more than 11,900 customers spending $100,000 or more per year, more than 1,900 customers spending over $1 million, and about 250 customers spending $10 million or more per year. The company attributes the growth to net revenue retention of roughly 900% for the third quarter.

Applications increase customer value

The filing emphasizes that a business that starts with the API can then adopt Claude Code for engineers and Cowork for other employees — much as Uber expanded from rides to food delivery and freight, or Amazon with AWS. According to the report, in the third quarter the 5% of enterprise customers with the highest spending who used Claude Code spent roughly 20 times more per month than the average enterprise user without that tool. To strengthen organic adoption, Anthropic is investing in Applied AI teams and, together with Blackstone and other private investment firms, launched the Ode with Anthropic project — embedding engineers in companies to build AI tools based on Claude. Distribution is also supported by partnerships with AWS, Google Cloud, and Microsoft Azure: Anthropic keeps a direct contract with the customer and pays the cloud providers a commission, which, it says, allows it to

Risks: cloud partners and customer concentration

Alongside growth, the S-1 also points to problems. Cloud partners increasingly view Anthropic as a competitor, which, according to the company, could make it harder to access the computing capacity it needs: Amazon, Google, and Microsoft may prioritize their own needs or competitors in which they have invested. Another risk is customer concentration: the risk factors section states that a significant reduction in spending by, or the departure of, one or more of its largest customers, if not offset by new contracts, could negatively affect the business and financial results. The company had not responded to TechCrunch's request at the time of publication. In TechCrunch's assessment, the

Why it matters

Anthropic's IPO is one of the biggest events in the AI market: the filing reveals, for the first time, a detailed financial picture of the company, including $16.3 billion in revenue for the half-year and retention of roughly 900%. For enterprise customers, this means the