Google Assistant arrived on the 18th of May 2016 during a developer conference. The initial rollout restricted access to Google Pixel smartphones for several months after its launch.
The service reached iOS as a standalone application in May 2017. It later expanded to Wear OS 2.0 following this mobile release.
Kiki Baessell provided the original American female voice for the assistant starting in 2010 through the Google Voice voicemail system. John Legend's voice was introduced on the 8th of May 2018 using WaveNet technology developed by DeepMind.
By October 2020, the service had expanded to businesses in eight countries. The limited release in late 2018 allowed Pixel users in Atlanta, New York, Phoenix, and San Francisco to make restaurant reservations autonomously.
Germany's Hamburg Commissioner for Data Protection initiated an administrative procedure on the 1st of August 2019 to prohibit Google from carrying out evaluations by employees for three months citing GDPR regulations. A spokesperson stated that Google paused language reviews in all European countries while investigating media leaks.
The 14th of March 2025 announced that Assistant would stop working on Android devices using version 9 and higher as well as iOS and Google Nest hardware. October 2023 unveiled a mobile version of the Gemini chatbot originally titled Assistant with Bard during the Pixel 8 event.