Anthropic's IPO filing shows enterprise strategy with cross-product ecosystem driving customer spend

Anthropic's S-1 filing reveals that over 50% of customers spending at least $100,000 annually now use both the Claude platform and a first-party app like Claude Code or Cowork, up from about 30% at the end of last year. As of September 30, the company reported more than 11,900 customers spending at least $100,000, with over 1,900 spending above $1 million and about 250 spending $10 million or more annually. Anthropic attributes this momentum to significant usage expansion as customers deploy Claude across their organizations, driving net revenue retention of about 900% by the end of the third quarter. The filing positions Claude as 'frontier AI with rapidly advancing capabilities' spanning models, the developer platform, and direct applications, describing its integrated approach as the reason customers adopt multiple products. The company also amplifies organic diffusion through Applied AI teams and a recent venture with Blackstone, Ode with Anthropic, to embed engineers into businesses to build bespoke AI tools.