You can bring up a new in-browser sidebar in Firefox, just for AI. No more Bing Copilot only in Edge, only when logged in with a OS Microsoft account - whatever web AI service you want and subscribe to.
Claude, Gemini, Mistral, HuggingFace…and ChatGPT.
Only drawback is Tampermonkey doesn’t seem to hit it to make the user interfaces like I’d want.
The prompts have some breadcrumb in about:config, but the prompt language and ability to config more functions seems out of user-land. They will be localizable. Firefox no longer allows original keys to be placed in about:config that could drive more prompts.