What it means for leaders

AI platforms take far more content than they return in visits, with large differences between them. Decide crawler access platform by platform, based on the traffic and visibility each actually gives back.

What would change the reading: Ratios falling as AI search products send more clicks.

The breakdown

October 25, 2026.
  • Perplexity3,859 to 1
  • OpenAI620 to 1
  • Anthropic488 to 1
  • Microsoft41 to 1
  • Google5 to 1

Every reading

DateValueChangeSource
488 to 1—Source

Definition and method

What it measures
For each platform, HTML pages crawled per HTML page visit it referred over 28 days; the reading is the median across the five platforms listed.
Population
HTML page requests and referrals on Cloudflare's network
Updated
Each update (last 28 days)
Source
Cloudflare Radar, AI Insights · CC BY-NC 4.0

Caveats

  • Covers sites on Cloudflare's network only.
  • A platform that sent no referrals has no ratio and is left out.

Cite this

Enterprise AI in Numbers, "Pages AI platforms crawl for every visitor they send back", https://lucianoayres.com/ai-brief/data/ai-crawl-to-refer-ratio/, retrieved October 25, 2026. Data: Cloudflare Radar, AI Insights.

Download every indicator (CSV) · Methodology