Image generators in this list take a prompt and return a picture. They differ in whether you get a website, a model you download, or a feature inside another product.
A model you run locally has a different cost from a hosted credit pack. The license column is the clue: open weights are not the same as a proprietary site that forbids training. This catalog stores the tier, not today's credit price. Check the vendor for the current pack before you publish a number.