Mozilla Tests an Opt-In AI ‘Smart Window’ in Firefox

Mozilla is testing a new “Smart Window” in Firefox, a separate optional space where users can chat with an AI assistant of their choice while browsing. The feature is being offered through a waitlist and stays off by default. Mozilla says users can decide when, how, or whether to use AI at all, and can turn it off if they do not want it. The company frames the project as user-controlled and says it is building in the open, with feedback from early testers. The Smart Window sits alongside Firefox’s Classic and Private modes, and Mozilla says it is meant to avoid the lock-in it associates with browsers made by AI companies. The feature also extends existing AI tools in Firefox, including the desktop sidebar chatbot and Shake to Summarize on iOS. Mozilla says AI should be “open, accessible, and driven by choice.”