01In plain English
Instead of unlimited use, the plan gives you a pool of credits each month or year. Every action costs credits: an image, a minute of video, a voice clip or a task. Bigger or better outputs usually cost more credits than small ones.
02Why it matters when you are choosing
Two plans with the same price can give you very different amounts of work, because each tool decides what a credit buys. The headline price only makes sense once you know how many of the things you actually make it covers.
03What to check
Ask the vendor
Work out what a credit buys for the thing you make most, whether unused credits roll over, and what extra credits cost once you run out.