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Mozilla has published today the final builds of the Firefox 148 open-source web browser ahead of its official unveiling on February 24th, 2026, so it’s time to take a look at the new features and improvements.
The biggest change in Firefox 148 is the long-awaited AI kill switch feature, which is implemented in Settings as “AI Controls”, allowing you to completely disable all the AI features that had been included in the past few releases. Firefox’s AI features can be disabled entirely or selectively.
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