Can AI assistants read insee.fr?

Measured on 2026-09-15 by asking the site 5 times — once as a browser, once as each of the 4 crawlers that feed ChatGPT, Claude, Perplexity, Gemini, Meta AI, Apple Intelligence and Doubao — and comparing what came back. The AI-training opt-out tokens that never crawl are read from robots.txt instead. Tranco rank #10,757.

What each crawler got back

What to change, in order

1. Publish llms.txt
   llms.txt is missing, so an assistant has to discover the site by following links. llms.txt is the emerging convention for telling an assistant which pages actually matter.
2. Mark the content with <main>
   The content-reachability check scores 27/100: with no <main> or <article> landmark, or with most of the page outside it, an assistant reads the navigation and the footer at the same cost as the text it came for.
3. Fix the plain structure: one <h1>, a title, a description, alt text
   The structure check scores 55/100. These are the cheapest signals on the page and the first ones an assistant uses to decide what the site is.

Get told if this changes

One email only when a measured crawler flips on insee.fr, served to refused or back. No schedule, no newsletter; double opt-in, one-click stop.

The checks

• Answers AI agents like it answers people100%
• Readable without JavaScript100%
• robots.txt lets the crawlers in100%
• Facts in JSON-LD67%
• Content reachable, not buried27%
• Publishes a map of itself45%
• Plain structure55%

History

2026-09-13: 80 · 2026-09-15: 80

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