The copilot.vim [1] plugin, for what it’s worth, is not FOSS.

[1]: https://github.com/github/copilot.vim

It looks like it integrates directly with the Augment service [1] (and it's made by them). It sounds like Augment is some kind of a bespoke coding assistant that also does various RAG things to automatically get better context on large codebases.

Never tried it so no idea how good it is.

1: https://www.augmentcode.com/blog/augment-code-vim-and-neovim...

You can try the service for free at https://www.augmentcode.com/

Thanks for explanation. From that Github page it's not clear at all what models/service they use for autocompletion.

I would love some survey document or something that goes over all the options for these kinds of vim extensions.

It's very easy to end up in a deep rabbit hole when I tried to figure out the "one best" way.

that survey would be outdated in a week, given how fast AI and neovim extensions evolve.