How does Google count the hits to charge the Place API

[Hoàng Ngọc Tuấn Anh]

Hello,

I would want to use Google's Place API to help our user fulfill their addresses easily and quickly. I've understood about limitation and price, however, I don't know yet how exactly Google count our requests.

For autocomplete service, whenever user type in the box, an Ajax request fired to Google's server to get suggestion : AutocompletionService.GetPredictions 

Then when user chose their address on that lists of suggestions, another request fired, this is : PlaceService.GetPlaceDetails

From this link:https://developers.google.com/maps/premium/usage-limits#usage-model-summary I know that your website will be charged 0.1 credit per request, so all requests will be counted, or only PlaceService.GetPlaceDetails are count ?

Thank a lot,