Google recently announced that its virtual assistant is coming to several more phones including HTC, Samsung, Huawei, Sony, and LG. It will be available in the next update to Google Play Services. Users in the U.S. will have access first, followed by users in the UK, Canada, Australia, and Germany. Google Assistant is compatible with phones running Marshmallow or Nougat OS and Google Play Services, and the phone has to have at least 1.5GB of RAM and 720p resolution display.
Source: PC Magazine
Here’s more info from Wikipedia:
Google Assistant is an intelligent personal assistant developed by Google and announced at Google I/O May 2016. Unlike Google Now, Google Assistant can engage in two-way conversations. The assistant is currently integrated into the Google Home device, Allo app, Google Pixel, and Android Wear. It will be included in future versions of Android TV and Android Auto. Beginning 26th of February 2017, Google Assistant is rolling out onto non-Pixel devices running on Android 6.0 Marshmallow and Android 7.0 Nougat…
Google Assistant, in the nature and manner of Google Now, can pull information, check weather, etc. Unlike its brethren, however, it can engage in a two-way conversation, using Google’s natural language processing algorithm. Search results are presented in card format that users can tap to open the page.