Summarizing a page (or explaining a phrase on one) for non-native-speakers or fixing up text input boxes are two that immediately come to mind.
Sure, both are possible by copy-pasting to any LLM, but being able to do it without leaving the page is great.
This applies to ebook readers at least as much as it does to browsers, fwiw – I find it mind-boggling that Kindles still doesn't have an "ask $LLM about this highlighted sentence" feature.
I just did the same thing with "very famous rock live acts performing within 500 miles of my location within the next 9 months". Whether this kind of functionality needs to be delivered via the browser I'm not sure. The LLM has to be server hosted, so may we well host the rest of it server-side, perhaps?
Chat conversations are definitely not the peak LLM UI. They're universal and don't require app integration, which is why they're what people are currently primarily using, but I strongly suspect that that's temporary.
Sure, both are possible by copy-pasting to any LLM, but being able to do it without leaving the page is great.
This applies to ebook readers at least as much as it does to browsers, fwiw – I find it mind-boggling that Kindles still doesn't have an "ask $LLM about this highlighted sentence" feature.