What it does
MistralAI-Training is Mistral AI's training crawler. Content is copied into datasets used to train foundation models. Blocking costs you nothing in traffic today; allowing is a donation of your content to model weights with no citation or referral in return.
Crawls web content to build datasets for training Mistral generative models. Full UA: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; MistralAI-Training/1.0; +https://docs.mistral.ai/robots). THE token a training-opt-out robots.txt needs for Mistral — MistralAI-User/-Index do not cover training. No published IP list means UA-spoof verification is impossible; new token since our 2026-07-19 snapshot.
How to verify a hit is really MistralAI-Training
Verification method (July 2026): none published — no IP list (mistral.ai/mistralai-training-ips.json 404s, checked 2026-08-22), unlike the vendor's other two tokens
Allow or block in robots.txt
Match the exact token MistralAI-Training in robots.txt:
# Block MistralAI-Training site-wide
User-agent: MistralAI-Training
Disallow: /# Explicitly allow MistralAI-Training
User-agent: MistralAI-Training
Allow: /For the allow-search-block-training combined pattern (and the Allow-directive gotcha that silently kills carve-outs), see the robots.txt guide. robots.txt governs whether MistralAI-Training may fetch; llms.txt is the separate, curated map AI assistants read once allowed in.
Vendor documentation: https://docs.mistral.ai/robots/
The Mistral AI family
Mistral AI operates 3 distinct tokens in this roster, and they do not block each other: a robots.txt line for MistralAI-Training does nothing to its siblings — each needs its own User-agent: entry (the robots.txt guide has combined patterns).
| Token | Role | robots.txt |
|---|---|---|
| MistralAI-User | User action | claims robots compliance |
| MistralAI-Index | AI search | claims robots compliance |
Frequently asked questions
What is MistralAI-Training?
MistralAI-Training is Mistral AI's training crawler. Content is copied into datasets used to train foundation models. Blocking costs you nothing in traffic today; allowing is a donation of your content to model weights with no citation or referral in return.
Does MistralAI-Training respect robots.txt?
Mistral AI claims MistralAI-Training respects robots.txt, but compliance is not independently confirmed.
How do I block MistralAI-Training?
Add 'User-agent: MistralAI-Training' followed by 'Disallow: /' to your robots.txt. Use the exact token — substring variants of other tokens will not match.
How do I verify MistralAI-Training traffic by IP?
You can't with confidence — Mistral AI publishes no IP list or rDNS pattern for MistralAI-Training as of our July 2026 review, so UA-only hits stay unverified.
Related bots
Same vendor, then other training crawlers — the full directory profiles all 34.