Anthropic's IPO S-1 prospectus
- Anthropic's S-1, reviewed by Reuters on September 29, showed 2025 revenue grew 12-fold to nearly $4.6 billion against $7.33 billion in compute spending, with preliminary Q2 2026 revenue exceeding $11.5 billion and Reuters reporting a potential $2 trillion-plus IPO valuation.
- The filing values a potential SpaceX compute contract at $84.5 billion through 2029, nearly double a previously known figure, with a 90-day cancellation right on most of the commitment, and gives the seven cofounders collective 50.1% voting control modeled on Palantir's governance.
- CEO Dario Amodei devoted more than a third of the S-1 to risk warnings, including that AI models could 'manipulate, blackmail, and exhibit other unpredictable behaviors,' while roughly a quarter of 2025 revenue came from two clients with no long-term contracts.
The filing lays out the financial structure of one of the largest AI companies approaching public markets, showing that compute costs exceed revenue even as quarterly sales surge past full-year 2025 figures. The disclosed customer concentration and absence of long-term contracts sit alongside a compute commitment that dwarfs current annual revenue.