Anthropic has sent an S-1 prospectus to a small group of partners, formally beginning preparations for a public listing. The document is not currently public; the figures the outside world is seeing come from the Financial Times and Reuters reviewing and relaying the prospectus, which THE DECODER then compiled. Therefore, the key figures cited in this article—revenue, losses, valuation, and so on—are all secondhand relayings, lacking direct corroboration from a first-party document.
The first set of facts the prospectus presents is that growth and losses are expanding at the same time. According to Reuters, Anthropic's 2025 revenue grew twelvefold to nearly $4.6 billion; over the same period, operating losses widened from $2.98 billion to $8.06 billion. The revenue curve points up, and the loss curve points up as well, with the latter's absolute increase being larger.
The second set of facts explains why the losses widened. Anthropic's spending on compute and infrastructure reached $7.33 billion, three times the previous year and more than half of total operating costs. In other words, the company put more than half of its operating costs into the underlying resources that support model capabilities, rather than conventional expenses that can be amortized linearly as revenue grows.