Have it as a stand alone plugin.
I should have to manually install this AI stuff.
Forcing everything into a plug-in is architecturally more complex, and less performant... I'm imagining proxying from native code through JavaScript APIs, then back to native code for LLM operations and context storage. But might lead to creation of some new AI extension APIs.
Language models are not like the Classic Theme, which can be relegated to an extension (now defunct).
Language models are like Hello, Pocket, and Sync. Core browser features one and all that must silently run by default unless explicitly disabled.
This. My browser should be a browser and nothing more. If I want more, I should be able to use an add-on. Stop baking everything in out of the box.
I should have to manually install this bookmarks stuff.
I should have to manually install this search bar stuff.
I should have to manually install this FTP client stuff (okay that last one is the case)
The team (AND Marketing) should focus on saying it's a fast core browser with the extensions you want to make it yours.
Have recommended extension sets ([uBlock, Sponsorblock], [Containerise, Sideberry, Decentraleyes], [AI translation + Dictionary/Thesaurus]).
Make me want to use your AI features, don't just slap them on my face wishing I'll do more than get mad and try to get rid of them.