After years of incremental updates, Google is betting that its Gemini AI can reinvent its smart speaker. On Wednesday, the company introduced its first audio device built specifically for Gemini with the $99.99 Google Home Speaker. The new Google Home device is the first stand-alone smart speaker from the tech giant since the Nest Audio in September 2020 . That older device arrived at a time when smart speakers were thought of largely as handy controllers for your smart home and music-playing