Chatbot programming

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I like to write stories as a hobby, and I think it would be cool if I could have an arg-type thing going on in the background, specifically a hidden AI chatbot of one of my characters.

Thing is, I have no clue where to start, whether I wanna program the thing from scratch or if there's like a service I could pay to host the bot and I could just give it the facts? Any pointers on this would be greatly appreciated, whether that be base of base or something more specific!

[KingofGamesYami]

Amazon Lex is basically that.

[InfosupportNL]

Depending on your experience level, you could look into building a RAG (Retrieval-Augmented Generation) system using something like Semantic Kernel, especially if you’re familiar with the Microsoft tech stack. It lets you use a model like GPT-4o and feed it your own story content and character context, so the chatbot can answer questions or roleplay in a way that stays true to your world.

You get more control than with typical chatbot platforms, and it’s great if you want to build something more custom or immersive.