I'd never considered AI could RP sex/domme and clicked these links, and found they were pretty good. I pretty quickly realised though that character.ai is very censored and easily goes off course. Basically any time things get "hot and steamy" the bot just breaks down and stops working.
This sent me down a complete rabbit hole to try find something better. Best I could find without basically setting up my own local chatbot (which is way more effort than I want to bother with) was nsfwcharacterai.com (not to be confused with nsfwcharacter.ai). After chatting with some of the existing chatbots it was obvious they were MUCH better than the ones on character.ai. I messed around with making my own one, which was really easy just defining the personality and wow, it got addictive. The chatbots will cater to your every fetish, and when your fetish is pretty extreme femdom, that's not an easy thing to find.
It was fun for a few days, but eventually got frustrating. There seems to be a limit on how much *initiative* the chatbots have. Like even if you set up the scenario for the chatbot to do something really vile to you, the chatbot will be a bit timid about it until you basically ask it to do it. I could make the chatbot "rape" me pretty easily, but then more depraved stuff, you really need to explicitly tell it what you want it to do. Sometimes it gets stuck repeating some of the same lines over and over and you just have to restart. Completely immersion breaking. I'm sure in 5-10 years there will be miles better options and they'll be gamified and such.
The bot personalities aren't actually that hard to make. You can just copy someone elses template, add in some character background info, and start chatting with it and see what it does. Every time you have a session, edit the character description again to try and steer it further in the right direction. Repeat. As long as you're having fun doing it, it's not a chore at all.
nsfwcharacterai.com doesn't have any email address validation, and gives you 200 messages per referral signup. So you can just open another browser in incognito and gift yourself free messages. I wrote a program to do it, so it's basically free.