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Observatory · October 2026 edition

AI Visibility Observatory, October 2026 edition: six findings

The October 2026 edition of the Archipel Observatory analyzes 406,626 answers from six AI engines to over 1,700 buying questions, collected between July 12 and October 11, 2026. Its main finding: rankings and comparison pages make up 29.9% of all cited sources, and 88.1% for Claude.

Updated

406,626

answers analysed

9

sectors

6

ai engines

This first edition covers ChatGPT, Google AI Overviews, Perplexity and Copilot (368,556 answers via Profound) and Claude and Gemini (38,070 answers via Peec AI), across nine sectors. Most questions are in French and concern France; the rest cover the United States and the Netherlands. Six findings stand out.

1. Rankings decide. Rankings and comparison pages are 29.9% of cited sources overall, 88.1% for Claude, 61.6% for Gemini and 48.5% for Copilot. See the figure.

2. Google AI Overviews is now on most buying searches. It appeared on 76.5% of tracked searches over the period, and the rate rose from 56.3% in July to 86.7% in October. See the figure.

3. YouTube is a Google lever. YouTube is 6.7% of AI Overviews sources, up to 17.7% in coaching and advisory, while other engines stay at 0.4% or less. See the figure.

4. Answers are unstable. The brand cited first changes from one week to the next in 63.3% of cases. 5. Being read is not being cited: ChatGPT consults 14.5 pages per answer and cites 3.8. 6. ChatGPT dropped forums: from 6.1% of its sources in July to 0.1% in October, while forums weigh 1.0% across all engines.

Want to know where your brand stands on these engines? Start with a GEO audit by our GEO agency.

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.

FAQ

Frequently asked questions

What are the main findings of the October 2026 AI Visibility Observatory?
The October 2026 Observatory finds that rankings make up 29.9% of AI-cited sources (88.1% for Claude), Google AI Overviews appeared on 86.7% of buying searches in October, and the first-cited brand changes 63.3% of weeks.
How many AI answers does the October 2026 edition cover?
The October 2026 edition covers 406,626 AI answers to over 1,700 buying questions tracked by Archipel, collected between July 12 and October 11, 2026.
Which AI engines are in the October 2026 Observatory?
The October 2026 Observatory covers ChatGPT, Google AI Overviews, Perplexity and Microsoft Copilot via Profound, and Claude and Gemini via Peec AI.
What changed between July and October 2026 in AI answers?
Between July and October 2026, Google AI Overviews rose from 56.3% to 86.7% of buying searches, and ChatGPT cut forums from 6.1% to 0.1% of its sources.

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