Usage-based.
One balance behind every API.

Prices are per unit of work — a million tokens, a search, a page, an image, an audio minute. Every figure on this page is read live from the platform, not typed into it.

A plan gives you dollar quotas on a 5-hour, weekly and monthly window plus a higher rate limit. Every account keeps the Free plan underneath, and you can hold more than one plan at a time.