> So, without any information, you assume that _every_ plugin ever put out is there, rather than the ones that were publicly published
No, we know that the unlisted ones that are accessible are the ones that weren’t supposed to be publicly published that are in limited testing.
> No possibility of the being internal testing tracks, or of having no testing tracks and OpenAI just telling you to handle it on your own for testing (by not publishing it, for example)
I mean, no, because OpenAI publishes what the testing setup is, so we know that the case isn’t “no testing tracks and OpenAI just telling you to handle it on your own for testing (by not publishing it)”.
And its not clear how you could test it without using the OpenAI published approach; since we don’t know whether OpenAI tunes on the information, or references it in the hidden prompt somehow. Only in that latter case could an external party even in theory test before exposing the plugin, and that would require detailed information that OpenAI hasn’t provided in its developer information.