Firefox Nightly has quietly added Microsoft Copilot to its sidebar and rolled out early New Tab page widgets — a clear sign that Mozilla is expanding both its AI integrations and its on-page productivity ambitions, all inside the experimental Nightly channel where features are prototyped before...
Mozilla has quietly added Microsoft Copilot to Firefox Nightly’s built‑in AI sidebar, bringing the same Quick Response, Think Deeper and a new “Smart (GPT‑5)” mode that Microsoft uses in Edge — a move that accelerates browser-level AI competition but raises immediate questions about privacy...