Credit expiry arrives on a date you can look up today. Ninety days of light preparation, in three short steps, means the first paid invoice says what you expected.

An hour with the provider's calculator and a short list of corrections prices most infrastructure changes well enough to decide with. The worksheet is ready to copy.

A token is the unit behind every AI invoice, and it does not behave the same in every language. Knowing how tokens work lets you price a feature before you build it.

GPU hours bill whether the hardware works or waits. Utilisation is the number that decides what yours really costs, and most of the fixes take an afternoon.

Twenty minutes of setup across the three major providers buys you a warning before the invoice arrives, plus the two settings that decide whether anyone acts on it.

Inference is billed on every request and keeps growing as a feature succeeds. One weekly number keeps it honest, and a handful of habits keep it proportionate.