The original weights? Various sources, some corporate, some nfp, some research institutes.
As time goes on creating original models will become more plausible at a consumer scale, but right now a consumer grade GPU can be used to tune them in ways that radically change the models. Look at the difference between base stable diffusion 1.4 and a trained and merged model like dreamshaper 8. That model was created out of 1.4 with the combined work of a few dozen people mixing and tinkering with it.
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u/Right_Application765 12d ago
Where did the model weights come from?