Google tests letting AI Mode users manage preferred sources from citations

Google is testing a “Source preferences” button inside AI Mode’s citations sidebar that opens a user’s preferred-sources list, letting them add or remove sources without leaving the response, per Search Engine Roundtable. The button was spotted by a user on X and has not been confirmed by Google; Search Engine Roundtable’s own account does not yet see it, suggesting a limited test. Preferred Sources, which Google launched inside AI Mode and AI Overviews in May 2026, had been picked more than 600,000 times as of August, per Google.