Andre Natal and I built the first real AI into Firefox starting a couple years ago with Firefox translations. The models are fully local, downloaded on demand,

Andre Natal and I built the first real AI into Firefox starting a couple years ago with Firefox translations. The models are fully local, downloaded on demand, and pivot around English so you only need a few to get pretty good coverage. It's an excellent use of the technology. 15 years ago, machine learning started making its way into Firefox in a big way with the Awesomebar's learning algorithms that get the sites you visit frequently auto-completing easier. That work was mostly Ed Lee in the early days and makes Firefox's addressbar far superior to Chromes (and back then Chrome said it was a superior algo but they couldn't take the 10 ms hit to the Omnibox popup performance so users could just type a lot more to get where they wanted to go).