> Do you ever...

There probably is a big difference between 'do you ever' and 'how often do you'.

I very rarely visit websites that I want translated; so rarely that I can tolerate google translate, or copying and pasting a section of a page into a tab with gemini; so on its own, this feature wouldn't sell me a browser. Besides, as a sibling comment says, even the current non-AI-enhanced browsers offer, sometimes too intrusively, to translate a page in a non-matching language. At least Chrome does this to me.

Your second scenario happens much more frequently; but again, it is so frictionless to type the term or a phrase in a search box in another tab that I never find myself wishing for a dedicated panel in the browser that could do this for me.

Your third scenario, for me, is finding something in api docs. Like, what's that command again to git cherry-pick a range of commits? So far, just googling this stuff or asking copilot / gemini in a separate tab has always worked. I am not sure I would be upset at a browser that didn't have an inbuilt tool for doing this.

What I do want from a web browser is evergreenness, the quickest and fullest adoption of all the web specs, and great web developer tools.