AI crawler · Mistral · Model training
MistralAI-Training: what it is, its user agent, and how to block it
MistralAI-Training is Mistral's AI training crawler. Collects content for training Mistral's models. Not used for search or live answers. In our 13 October 2026 study, 97 of 2,332 live top sites with readable robots.txt rules (4.2%) disallow MistralAI-Training. Part of the AI crawler list.
What MistralAI-Training does
Operator: Mistral. Job: Model training. Obeys robots.txt.
“Webmasters can disallow this user agent in their `robots.txt` file.”
MistralAI-Training user agent
robots.txt token: MistralAI-Training (matched case-insensitively).
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-Training/1.0; +https://docs.mistral.ai/robots)robots.txt: allow or block MistralAI-Training
Allow
User-agent: MistralAI-Training
Allow: /Block
User-agent: MistralAI-Training
Disallow: /Training only, not citations. Blocking it is a training opt-out. It doesn't decide whether Mistral's AI answers can cite you; MistralAI-Index does that, and it has its own robots.txt group.
Once a group names MistralAI-Training, it ignores your User-agent: * rules, so copy any paths you still want blocked into it.
How many top sites block MistralAI-Training
Disallow MistralAI-Training in robots.txt
4.2%
97 of 2,332 sites
In our 13 October 2026 study, 97 of 2,332 live top sites with readable robots.txt rules (4.2%) disallow MistralAI-Training.
Sample: Tranco top 5,000, tested once on 13 October 2026 from one Indian fixed-line connection. The robots.txt share counts live sites (home page 2xx) whose rules we could read, as on the AI visibility hub. Method and CSV in the study.
Check your own site
The AI crawler checker reads your robots.txt the way MistralAI-Training does and tests what your firewall returns. To write the rules, use the AI robots.txt generator.
Check your page: free, about 20 seconds, no sign-in
What it checks
- robots.txt for MistralAI-Training
- Finds the group MistralAI-Training obeys under RFC 9309 and the rule that decides your page.
- What your CDN lets through
- Requests the page as OAI-SearchBot, PerplexityBot and Claude-SearchBot and compares the answers with a browser request.
- Content without JavaScript
- AI crawlers don't run JavaScript. The audit checks how much of the page is in the raw HTML.
Free to run. Pay only for the fixes you want.
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Your score without signing in; with a free account, every check's result and the full fix for the top 1 issues.
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Every issue with its exact fix for one site, PDF/Markdown/JSON exports, re-audit for 30 days. Nothing renews.
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Questions
What is MistralAI-Training?+
MistralAI-Training is Mistral's AI training crawler. Collects content for training Mistral's models. Not used for search or live answers.
What is MistralAI-Training's user agent?+
Mistral documents it as: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-Training/1.0; +https://docs.mistral.ai/robots). Match on the token MistralAI-Training, since version numbers change.
How do I block MistralAI-Training?+
Add "User-agent: MistralAI-Training" followed by "Disallow: /" to your robots.txt. Obeys robots.txt, per Mistral.
Does blocking MistralAI-Training affect AI search citations?+
Blocking it is a training opt-out. It doesn't decide whether Mistral's AI answers can cite you; MistralAI-Index does that, and it has its own robots.txt group.
How many websites block MistralAI-Training?+
In our 13 October 2026 study, 97 of 2,332 live top sites with readable robots.txt rules (4.2%) disallow MistralAI-Training.