The basis for using AI plans is the number of Tokens allotted for a specific plan. A paid plan will always be better than a free version subscription. Users are not aware of how many Tokens are allocated to a free version subscription until it stops working (this is a marketing strategy used by other AI plan providers in general, not only ChatGPT, to attract users and then convince them to upgrade to a paid plan).
With AI-pro.org, users are given a generous amount of Tokens per plan (250,000 tokens for a BASIC plan, 500,000 tokens for a PRO plan, and unlimited token allocation for a PRO MAX plan). Token allocation is replenished after each billing cycle.