I had a look at the Google Translate product and could not find the "free, metered way" described on the Wiki page. The Translate BASIC and Translate ADVANCED REST methods both required an API key and a Google Account, Google Project id and Google credit. The closest "free" way I could find was the first 500,000 characters per month were free, after which it cost $US 20/million characters, for Translate BASIC (the first 500,000 characters being provided by way of an ongoing Google credit of $US 10/month). See
https://cloud.google.com/translate/pricing.
Perhaps the
Wiki page could do with an update unless I'm missing something?
The French page URL for the "free metered API" service is also a 404 and the Wiki claims 100 requests an hour are free (with a to be confirmed annotation).