Since today, Google Assistant can speak two languages at once. Initially, the new Google Assistant feature can speak a combination of English, French, German, Italian, Japanese, and Spanish. Multilingual support will be extended to include more languages in the coming months.
Google Assistant is the first digital assistant from competitors Siri, Bixby, Alexa and Cortana that can "speak" two languages simultaneously.
Google Assistant multilingual support is available today on many assistant-running devices, such as Android smartphones, Home speakers, and tablets running Android. The only exceptions to this rule are the smart-screen speakers that contain the Google Assistant, such as the Lenovo Smart Display released last month and the JBL Link View expected in the coming weeks.
To add support in two languages, just open the Google Assistant Settings and select Assistive Languages in the properties. Once enabled, you will be able to freely switch between the two options.
Google was able to do automatic multilingual speech recognition in Google Assistant using the LangID model to recognize languages. Then another algorithm is used to make speech-to-text in milliseconds. Google will later try to activate its Assistant to speak three languages at a time, according to a post at Google AI blog which explains the process.