AI becomes optional in Firefox 148 as Mozilla launches new control system

Mozilla has confirmed that Firefox will include a built-in ‘AI kill switch‘ from version 148, allowing users to disable all AI features across the browser. The update follows earlier commitments that AI tools would remain optional as Firefox evolves into what the company describes as an AI-enabled browser.

The new controls will appear in the desktop release scheduled to begin rolling out on 24 February. A dedicated AI Controls section will allow users to turn off every AI feature at once or manage each tool individually, reflecting Mozilla’s aim to balance innovation with user choice.

At launch, Firefox 148 will introduce AI-powered translations, automatic alt text for images in PDFs, tab grouping suggestions, link previews, and an optional sidebar chatbot supporting services such as ChatGPT, Claude, Copilot, Gemini, and Le Chat Mistral.

All of these tools can be disabled through a single ‘Block AI enhancements’ toggle, which removes prompts and prevents new AI features from appearing. Mozilla has said preferences will remain in place across updates, with users able to adjust settings at any time.

The organisation said the approach is intended to give people full control over how AI appears in their browsing experience, while continuing development for those who choose to use it. Early access to the controls will also be available through Firefox Nightly.

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