Hello Perplexity AI into the sidebar. https://connect.mozilla.org/t5/ideas/perplexity-ai-into-the-sidebar/idi-p/78491 is now open to votes (aka kudos) and comments. About, browser.ml.chat.provider, if the choice is another chat, then browser.ml.chat.provider, is overwritten by the new choice. About, Copilot. https://www.firefox.com/en-US/firefox/143.0/releasenotes Of course, this is not the expected answer, nevertheless Take a look at https://connect.mozilla.org/t5/discussions/try-out-perplexity-ai-search-in-firefox-139/m-p/100560/highlight/true#M39051