Semrush reports DemandSphere data showing AI Overviews on 26.12% of tracked branded queries on Sep 1, peaking at 90.48% on Sep 27 and 82.06% on Sep 29. Ahrefs (US desktop only) puts it at 65.1% in August and 82.91% on Sep 29. Both datasets agree branded search is now mostly an AI-answer surface.