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Key developments – A new Ahrefs study of 66.6 million logged‑out ChatGPT sessions shows that only 14.4 % of responses triggered a live web search in August‑September 2026, with an average of 1.6 follow‑up queries when a search did occur. At the same time, Google’s AI‑generated “Overviews” have become dominant in branded search results, appearing in 82.91 % of U.S. desktop queries on September 29 and landing in the top spot for 48 of the 63 cases tracked.
Why they matter – The low search‑trigger rate means AI assistants are increasingly answering from internal knowledge bases rather than pulling fresh web content, shifting the SEO challenge toward building strong brand reputation and authoritativeness that AI can cite. Meanwhile, the surge in AI Overviews reshapes the SERP landscape, giving brands that secure the top‑positioned overview a near‑guaranteed visibility boost, while also reducing click‑through to traditional listings.
What to watch next – Marketers should monitor whether the 14.4 % search‑trigger figure holds steady or rebounds as models evolve, and track Google’s placement algorithms for AI Overviews to see if the dominance of position‑one spots persists. Watching the interplay between AI‑generated answers and traditional web results will be critical for visibility strategies in the coming months. [[1, 2]]