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Someone made a GPT-like chatbot that runs locally on Raspberry Pi, and you can too
(www.xda-developers.com)
This is a most excellent place for technology news and articles.
Not wanting to be mean, I just find the thought of people talking to robots a bit strange, and use them as tools only. Not sure what "roleplay" means, if it is some "fantasy DND generator" still you could say this may be better done by humans to keep that grey matter running.