usage credits
A pay-as-you-go way of billing for AI, where you're charged for what you actually use.
Usage credits are a pay-as-you-go way of paying for AI. Instead of a flat monthly fee for unlimited access, you draw down credits as you use a model — typically tied to the number of tokens processed. Heavier use costs more; lighter use costs less.
This billing model is worth understanding because costs can change suddenly. When a tool moves from being “included” in a subscription to being charged through usage credits, a workflow that felt free can start adding up quickly — something Fable 5 users faced when its subscription inclusion ended.
The practical advice is to know how a tool bills you, keep an eye on consumption, and set limits where you can. Some companies have even capped what staff may spend per week after AI tool bills climbed unexpectedly.