What percentage of websites block AI crawlers?
HubSEO has not measured a reliable cross-web statistic for this and will not quote one. Robots.txt blocking rates vary heavily by sample, sector and month, and third-party figures usually cannot be reproduced. What HubSEO does measure is your domain: a live robots.txt check for each documented search and training agent, with the exact rule that applies and what its operator says happens when it is blocked. Run the free AI crawler check for a per-agent answer on your site.
Benchmark not yet publishable
The audit pipeline has not yet captured the required robots.txt, JSON-LD, llms.txt, and security-header signals across a verified sample (n≥100). No estimated or illustrative figures are shown.
Methodology & Data Collection Standards
Statistics publish only when computed from verified audit runs with a sufficient sample (n≥100). The current audit pipeline does not yet persist robots.txt rules, JSON-LD validity, llms.txt presence, or security headers, so no rates are estimated or displayed.
Frequently Asked Questions
How often is the AI Crawler Readiness study updated?
The benchmark dataset recalculates monthly as new public technical audits are processed by our engine.
What websites are included in the sample?
The sample consists of production B2B SaaS, developer tooling, and technical marketing domains.
Can I cite these statistics in my own research?
Yes. All statistics may be cited with attribution to the HubSEO 2026 AI Crawler Readiness Dataset.
Why do so many websites block GPTBot?
Many legacy web frameworks and security plugins enable default bot blocking rules without distinguishing search bots from scrapers.