Overview
- A new AI controls section debuts in Firefox 148 on February 24, with testing rolling out first to Firefox Nightly builds.
- The global "Block AI enhancements" toggle disables current and future generative features and suppresses prompts and pop‑ups, with preferences persisting across updates.
- Users can also manage features individually, including translations, PDF alt text, AI tab grouping, link previews, and a sidebar chatbot that supports providers such as Claude, ChatGPT, Copilot, Gemini, and Le Chat Mistral.
- Mozilla says the master toggle will be off by default and the panel will reflect existing choices, keeping previously used features enabled and previously disabled ones blocked.
- The move contrasts with rivals that lack a single browser‑wide off switch and follows leadership pledges that "AI should always be a choice," alongside broader investments in AI transparency initiatives.