https://www.theverge.com/2017/12/13/16773160/google-assistant-available-android-tablets-phones-lollipop

Google Assistant has been flexing a lot of new skills as of late, from connecting you with local home services to telling you the name of a song playing nearby. Now, Google has announced Assistant is available to use on even more devices, coming to Android tablets running Android 7.0 Nougat and 6.0 Marshmallow, and phones running 5.0 Lollipop.

Assistant for tablets will be rolling out over the next week to US users that have English set as their language. Assistant for Android 5.0 Lollipop has already started to roll out to users with English set as their language in the US, UK, India, Australia, Canada, and Singapore, and users with their language set as Spanish in the US, Mexico, and Spain. It will also shortly come to Italy, Japan, Germany, Brazil, and Korea.