How to make an autocomplete address field with google maps api?

Using Google Maps API and JQuery I would like to have an Address field that when typing it will autocomplete the address entered there. How this could be achieved?

Is Google address autocomplete API free?

Autocomplete without Place Details – Per Session (price starting at 0.017 USD per session)

How do I create an autocomplete search box in Google Maps?

Google Map with Autocomplete Search BoxCreate an input element ( searchInput ) where the autocomplete addresses search will be added. Create a DIV element ( map ) to display the Google Map. Specify the elements to display the geolocation data.

Well, better late than never. Google maps API v3 now provides address autocompletion.

API docs are here: http://code.google.com/apis/maps/documentation/javascript/reference.html#Autocomplete

A good example is here: http://code.google.com/apis/maps/documentation/javascript/examples/places-autocomplete.html