You may want to check out AI Horde

https://aihorde.net/

https://github.com/Haidra-Org/AI-Horde

A massive crowdsourced distributed inference cluster for AI Models. This software can support both Image and Text generation. It allows people without a powerful GPU to use Stable Diffusion or Large Language Models like Pygmalion/Llama by relying on spare/idle resources provided by the community. It also allows non-python clients, such as games and apps, to use AI-provided generations.

The main developer is A Division by Zer0 who has a pretty popular instance on Lemmy actually.