I'm here to toss another AI hoster out there, and see if you people who love writing/porting them would want to use this one.
Joyland.ai has a handful of inflation bots of varying quality, but I've been fiddling with it since before there were any. The AI knows what inflation is, and you can interact with an AI briefly to twist its pre-defined story towards inflation, EX I chatted with an assassin with poisonous lips to ay 'hey what if that kiss makes people inflate' and set up them doing such to 'myself'(as the AI is really bad at actually doing OOC chatter and will chat by its definitions, but will still know when you're trying to OOC) as well as writing a bully into forcibly inflate my character, a maid harem to be full of inflatable women, and multiple fantastical scenarios with a book that 'makes whatever you write into it real'.
And, most important, unlike other options like Caveduck, the AI is free to use while still being NSFW, and I feel like I get better&more creative responses from it over Spicychat's basic model. It does have credits you can use to have it generate possible responses for you, or to reroll AI responses, but honestly I can just copy/delete/paste my response to get it to try again without a credit, so it's only for the lazy.
I'll put the bots I mentioned below, but really, you can lead any AI on there into inflation with a bit of work. But it'd be fun to see proper inflation bots made for it too that have more work put in them than the current ones.
Succubus: Woman with poisonous lips to assassinate her target https://www.joyland.ai/chat?botId=pLNqk
Maid Mansion: User wakes up in mansion full of maids as their new master https://www.joyland.ai/chat?botId=lVwbb
Rulebook School: User finds a book that makes anything they write in it come true. Anything. https://www.joyland.ai/chat?botId=5dWDD
TL;DR Joyland.ai is a fun&free NSFW AI that needs more inflatey love on it. AI knows how to inflation so you can twist any bot in that direction with a little creativity. Seems higher quality than other free alternatives.
Have fun, degenerates.