There are some more details in the MDN Plus docs: https://developer.mozilla.org/en-US/plus/docs/features/ai-he...

Apparently it's based on GPT-3.5. I wonder how it compares to ChatGPT with GPT-4 for more advanced problems, for instance stuff which requires combining multiple web APIs or some degree of logic.

My experience with ChatGPT with GPT-4 has been much better than with GPT-3.5. Though have heard some say GPT-3.5 is better at some things?

It seems like you're also only allowed to ask 5 questions per day, hopefully that limit will increase (or better yet, go away) once it leaves beta.

I wonder if someone could make a ChatGPT plugin that does the embedding search on MDN. Or if they already did.

GPT-4 can be much better for complex things but as far as "some degree of logic" 3.5 can definitely handle "some degree".

If it's just trying to tweak a specific example it will probably be quite useful.