Anthropic’s IPO filing reveals its strategy for keeping enterprise customers hooked

Anthropic’s S-1 filing says it is expanding enterprise use of Claude across its model platform, developer services and first-party applications including Claude Code and Cowork. More than half of customers spending at least $100,000 annually used both the Claude platform and a first-party app as of September 30, compared with about 30% at the end of 2025. Anthropic reported more than 11,900 customers spending at least $100,000 a year, more than 1,900 spending more than $1 million, and about 250 spending at least $10 million. The company said net revenue retention was about 900% at the end of the third quarter, driven by expanding deployment within customer organizations. Anthropic said the highest-spending 5% of Claude Enterprise customers who used Claude Code spent about 20 times more per month than the average enterprise customer that did not use the coding tool. Its Applied AI teams help customers integrate Claude into existing technology stacks, while Ode with Anthropic, a venture involving Blackstone and other private-equity firms, deploys engineers to build customized Claude tools. Anthropic also sells through AWS, Google Cloud and Microsoft Azure while retaining direct customer contracts and setting prices. The filing reported $16.3 billion in revenue for the first half of 2026, up from $1.2 billion a year earlier, while warning that cloud partners may prioritize their own AI offerings or competitors and that losing major customers would harm its business.