Reference
Billing
Free decisions to start, then prepaid credit at list prices.
Free decisions
Every account starts with 10,000 free decisions on tod-picker. Each answered
question counts as one decision: a /v1/systemone request with three
questions uses three, and a /v1/pick request uses one.
Prices
After the free allowance, requests are charged per million tokens at the prices on the models page.
- tod picker bills input tokens only, once per request; nothing is generated.
- Nano Banana bills Google’s list prices for input, text output (thinking included) and image output tokens.
Every response reports its usage, and every request shows up in the console.
What is never charged
Failed, rejected and cancelled requests: an invalid body, a bad image, an auth error, or a backend failure costs nothing.