I’ve used GPT to estimate compensation for jobs before and got pretty good estimates. I think adding said estimate to the prompt on this app shouldn’t be hard at all and might help
I know of two options:
1) the simplest, is to ask GPT to tell me an estimate for a certain role, at a certain company, at a certain location/area - with the right prompt, and if it can find additional info online, it gives pretty decent guesses
2) if you are willing to code it in multiple checks and steps, you can have GPT help you navigate and scrape listings. For example, the listings in Ask HN usually have very little detail, and no ranges, but a lot of them have links to somewhere else with detailed info, including ranges - or they don't have links, but you can still find the info and ranges their careers page or some other platform
In the second case there's a lot of trial and error, for which GPT could be helpful in navigating with less supervision