I am not entirely sure how ChatGPT plugins work in terms of context. When it loads the various files in my project, sometimes a dozen files at a couple kilobyte each, it then tells me everything there is to know about them.

That would have been impossible with just pasting the file contents into a single user interaction in chat, because of token limits. But with the plugin, it seems to work (mostly). It still meets token limits for very large files, or if it starts recursing into querying functions in each file - which is why I often tell it to only read the full files themselves.