Similar offline versus online privacy thing for music recognition.

My Pixel is sat here charging. Billie Eilish is singing in the background, by the time she sings "I should have known..." it has recognised the music and passively displayed "No Time To Die by Billie Eilish" on the lock screen.

Google's team were building an ML model for music recognition and they realised oh - the smallest model fits on a phone. We don't need to spin this up as a cloud service we can just deliver it to the phones of people who want it as a feature. "Now your phone can tell you what that music is".

Of course down the road this awareness of context allows even cleverer agent interaction. "Which Bond was that?" you ask as Adele sings "Skyfall". "In the movie Skyfall, James Bond was played by Daniel Craig".