Your API bill, before it arrives.
A quick calculator for OpenAI and Anthropic. Enter your usage, see the estimate. If it feels steep, Capped will tell you when it arrives.
$2.50 input · $10.00 output · per 1M tokens
An estimate assumes a flat request pattern. Real usage spikes — which is why a cap + a nudge matters more than a number.
An estimate is a guess. A cap is a promise.
Capped reads the same cost data the providers show in your dashboard — but from your browser, on a schedule, with a nudge at 80%, 100%, and 150% of the cap you set. Read-only admin keys. Keys never leave your machine on the free tier.
Prices reflect publicly listed per-million-token rates as of April 2026. Providers adjust frequently — verify against OpenAI's pricing and Anthropic's pricing for your actual usage. This calculator makes an estimate, not a guarantee.