AI generated encyclopedia kind of seems like a terrible idea. The entire goal of an encyclopedia is to get true (and hopefully unbiased) knowledge, which AI is known to be bad at, especially on the edges.
I found myself frequently using ChatGPT to learn about new topics. I prefer it over Wikipedia because when I don't understand something, I can just ask it and it can clarify it for me until I get it. However, I found the chat UI to be unideal for this sort of thing, so I created this website using a UX that is aimed at educational use.
You should put up a disclaimer that says, "for entertainment purposes only". Calling this an encyclopedia and marketing it as educational just seems like a bad idea. The whole idea behind a traditional encyclopedia is usually that it is written and vetted by experts.
Honestly, you'd be way better off just using a basic rag architecture. When a user asks for a topic simply mirror the Wikipedia article and throw up a chat sidebar interface, so that the user can ask questions about it. At least by locking down your context window, you could minimize the number of hallucinations, which judging from some of the other comments sounds like it's already an issue.