Observatory · October 2026
The First Brand AI Cites Changes 63.3% of Weeks
For the same question on the same AI engine, the brand cited first changes from one week to the next in 63.3% of cases (Archipel Observatory, July to October 2026).
Updated
63.3%
Go further →For the same question on the same AI engine, the brand cited first changes from one week to the next in 63.3% of cases (Archipel Observatory, July to October 2026).
By engine: 65.5% for Google AI Overviews, 64.3% for ChatGPT, 64.2% for Perplexity and 51.6% for Copilot. A single check of an AI answer proves little.
Method
406,626 AI answers collected every day from July 12, 2026 to October 11, 2026 on over 1,700 purchase-intent questions tracked by Archipel (mostly in French, plus the United States and the Netherlands). ChatGPT, Google AI Overviews, Perplexity and Copilot: Profound data. Claude and Gemini: Peec AI data. Sources are classified automatically from their address and title. Figures are aggregated: no brand or client is published. Free to reuse with a link to this page.
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