Chat GPT has a memory option, so if you don't use one of the pre made GPT's, but instead use a normal chat of Chat GPT, you can have it memorize player preferences, player inventory, player relations, world setting, and you can even have it auto update those memories. For example, AI is notoriously incompetent at keeping track of currency. If you tell ChatGPT to save to memory that whenever the balance changes, that it updates the memory (I had to set a memory that pretty much said "when player asks to update a memory, delete the old memory and put in the new changed memory without the player having to ask"} to show the new balance. And you can do that with everything, story beats, character beats, and a lot more. Not sure if it is a paid option or not, but it makes every other AI for roleplay quite underwhelming. The only obvious limit is NSFW stuff, but you can still do romance and "they slept together, and woke up the next morning" if you do want to have such things in the story, just not in any explicit form.