Ask HN: What's the best global address verification API you've used?

Of the half dozen or so I tested (not super scientifically, but with a moderately sized sample dataset that I ran through several APIs), Smarty seemed to be the most accurate: https://www.smarty.com/

It was expensive though.

And there's the Google Maps API, of course:https://developers.google.com/maps/documentation/address-val...

I thought Maxmind was the gold standard or am I old?

My main reference point with them is that their free IP geolocation database is terrible, and every time I find a geolocation error on a website, it's almost always because they're using that DB (https://dev.maxmind.com/geoip/geolite2-free-geolocation-data).

I've come to equate MaxMind with "bad data"... would be afraid to trust them with anything, unless their paid services are dramatically better.

here.com is good also radar.io