Gets people talking about it more, I guess.

https://frame.work/

Now, we’re excited to invite you to help shape the work on our next innovation: an AI Window. It’s a new, intelligent and user-controlled space we’re building in Firefox that lets you chat with an AI assistant and get help while you browse, all on your terms. Completely opt-in, you have full control, and if you try it and find it’s not for you, you can choose to switch it off.

https://www.firefox.com/en-US/ai/

You need to enable it in “Secret Settings”

Over 1.4M now

You can also enable this in the latest version of Firefox by navigating to about:config and setting dom.text_fragments.create_text_fragment.enabled to true.