I just tried asking ChatGPT for the coordinates of an address and got this response
Geocoders are pretty smart, especially established ones like Esri, Google, Here (to name a few). I’m sure it won’t be long (if they haven't already) until they start implementing LLM/AI based features into them.
When you say ‘missing addressees’ i’m assuming you mean addresses that the geocoder couldn’t find? You could try passing them to something like ChatGPT and asking it to check that it was structured correctly. But I doubt it would be able to correct an incorrectly typed street name, suburb etc.