Google's Duplex uses AI to mimic humans, but only sometimes

Duplex, which Google first showed off last year as a technological marvel using AI, is still largely operated by humans

On a recent afternoon at the Lao Thai Kitchen restaurant, the telephone rang and the caller ID read “Google Assistant.” Jimmy Tran, a waiter, answered the phone. The caller was a man with an Irish accent hoping to book a dinner reservation for two on the weekend. This was no ordinary booking. It came through Google Duplex, a free service that uses artificial intelligence to call restaurants and — mimicking a human voice — speak on our behalf to book a table. The feature, which had a limited release about a year ago, recently became available to a larger number