Firefox 148 adds AI controls to block current and future generative features

Mozilla is adding a hard “off switch” for browser AI. With Firefox 148 rolling out February 24, users will get a new settings area to block all current and future generative AI features, or selectively keep the ones they want.

New Firefox AI controls for opting out of generative features

The headline change is a single toggle: “Block AI enhancements.” When enabled, Firefox will suppress prompts, reminders, and surfaces that would otherwise introduce generative features. For B2B teams that standardize employee browser setups—especially in regulated environments or agencies managing many client accounts—this creates a clearer policy lever: either no AI features at all, or a controlled subset.

Mozilla says the same control panel will also let users manage individual AI-related features rather than taking an all-or-nothing approach. That matters because “AI in the browser” increasingly spans assistive UX (like translations) and content-adjacent automation (like link previews and tab organization), not just chatbots.

What features are included and why it matters for marketers

Firefox’s per-feature list includes Translations, alt text generation in PDFs, AI-enhanced tab grouping, and link previews. It also covers the sidebar chatbot, which can connect to third-party services such as Claude, ChatGPT, Microsoft Copilot, Google Gemini, and Le Chat Mistral.

For marketers and e-commerce operators, the practical takeaway is governance. Browser-level chat can create shadow usage of third-party LLMs (for example, pasting ad copy, product positioning, or customer data). Centralized toggles reduce accidental adoption while still allowing teams to approve specific productivity wins, like translations.

Mozilla frames the move as a response to users who want either zero AI or only “genuinely useful” tools. It also aligns with CEO Anthony Enzor-DeMeo’s position that AI should remain optional, expressed in Mozilla’s leadership blog post at https://blog.mozilla.org/en/mozilla/leadership/mozillas-next-chapter-anthony-enzor-demeo-new-ceo/.

In parallel, Mozilla President Mark Surman told CNBC the organization is building a “rebel alliance” to push for more trustworthy AI and plans to deploy 1.4 billion dollars in reserves to support related efforts, per https://www.cnbc.com/2026/01/27/mozilla-building-an-ai-rebel-alliance-to-take-on-openai-anthropic-.html.

For teams evaluating AI-enabled browsers, Firefox’s bet is simple: adoption grows faster when opt-out and transparency are first-class settings, not buried defaults.