MistralAI-Training: what it does, and what blocking it means
Mistral's training opt-out. Blocking it keeps your content out of Mistral model training.
| Operator | Mistral |
|---|---|
| What it does | Model training |
| Obeys robots.txt | Yes, per its operator's docs |
| Governs | AI model training |
| Has a crawler | Yes |
| Last verified | 15 September 2026 |
| Next review | 15 December 2026. We re-check every entry against the operator’s documentation each quarter. |
What happens if you block MistralAI-Training?
Blocking it affects
- Mistral model training
It does not affect
- Le Chat's search and the pages it opens for users
Does blocking MistralAI-Training affect Le Chat?
Mistral splits its crawlers cleanly, which makes this an easy decision: MistralAI-Index handles search and MistralAI-User fetches pages for Le Chat. Blocking the training token leaves both working.
How do you spot MistralAI-Training in your logs?
To find MistralAI-Training in your logs, match the User-Agent shown on this page. The robots.txt token is what the crawler reads, not what appears in the request.
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-Training/1.0; +https://docs.mistral.ai/robots)Anyone can send that string, and Mistral publishes no address ranges for MistralAI-Training, so there is no way to confirm from outside that a request carrying it is really theirs.
How do you block or allow MistralAI-Training in robots.txt?
To block MistralAI-Training:
User-agent: MistralAI-Training
Disallow: /To allow it explicitly, use an Allow: / rule if your file has a blanket User-agent: * disallow:
User-agent: MistralAI-Training
Allow: /With neither rule, MistralAI-Training is allowed by default.
Not sure how MistralAI-Training fits with the others? Build the whole file, or see which AI crawlers to allow.
Is your site blocking MistralAI-Training?
A CDN or bot-management rule can still block MistralAI-Training even when robots.txt says it is welcome. You cannot see that mismatch from the front of the site.
We request your robots.txt and homepage. We read your sitemap only when robots.txt hides pages from a crawler and we need to measure how much is affected. No other page.
Official sources
How is MistralAI-Training different from Mistral’s other crawlers?
| MistralAI-Training | MistralAI-Index | MistralAI-User | |
|---|---|---|---|
| Its job | Model training | Search & citations | Fetches when a user asks |
| Blocking it affects | Mistral model training | Le Chat's search results and citations | Le Chat opening your page when someone asks about it |
| Blocking it leaves alone | Le Chat's search and the pages it opens for users | Mistral model training | Le Chat's search results; Mistral model training |
| Obeys robots.txt | Yes, per its operator's docs | Yes, per its operator's docs | Yes, per its operator's docs |
| Verifiable by IP | No, no published ranges | Yes, ranges are published | Yes, ranges are published |
| Last verified | 15 September 2026 | 15 September 2026 | 15 September 2026 |
Which other crawlers do the same job as MistralAI-Training?
- GPTBot: Model training, run by OpenAI
- ClaudeBot: Model training, run by Anthropic
- Google-Extended: Model training, run by Google
- Applebot-Extended: Model training, run by Apple
- meta-externalagent: Model training, run by Meta
- Bytespider: Model training, run by ByteDance
- CCBot: Open training corpus, run by Common Crawl