In the diagram, there is theoretically another category outside the 'Restricted Weights' but maybe less than the 'Completely Closed' superspace, and that would

In the diagram, there is theoretically another category outside the 'Restricted Weights' but maybe less than the 'Completely Closed' superspace, and that would be something along the lines of 'Blackbox weights and model' that is free to use but essentially non inspectable or transferrable. This would be the sister to 'free to use' closed-source software. An AI that is free to use but provided as a binary blob would meet this criterion. Or a module importable to python that calls precompiled binaries for the inference engine + weights with no source available. The traditional complement of this in the current software world would be Linux drivers from 3rd parties that are not open source. They are free, but not open. We haven't seen this too much yet in the AI world, as mostly people who open the weights are doing so in a research manner, where the inference is decidedly needed to be open sourced- and people with closed models do so in order to make money and thus no reason to open source the inference side either, just charge for an API ("OpenAI").