Before there were LLMs, there was Clippy. He'll do his absolute best to answer your questions, just as well as any AI.
This is very stupid and quickly hacked together, so don't expect much beyond a silly joke or two.
Clippy can be run straight from a git checkout, for the full effect install the font in the fonts directory first.
Just run clippy.py
If you're feeling adventurous you can bind him to a Co-pilot (or similar) key. In GNOME this can be acheived by going to Settings -> Keyboard -> View and Customise Shortcuts -> Custom Shortcuts
It is only tested on Linux and requires GTK 3.
Nothing. Clippy is perfect as he is.