AI2Bot
A nonprofit research crawler for fully open models. Allowing it means your content lands in a public dataset.
Reference reviewed by Sona
| Operator | Allen Institute for AI |
|---|---|
| Powers | OLMo and other fully open model training |
| Purpose | Model training |
| User-agent token | AI2Bot |
| Respects robots.txt | Mostly |
AI2Bot collects web content for the Allen Institute for AI, a nonprofit research organization. Its crawler page describes exploring certain domains to find content that is then "used to train open language models" - the OLMo family being the flagship, notable for releasing open weights, open training data, and open training code together.
That openness changes the nature of the decision. With a commercial training crawler, your content becomes an invisible ingredient in a closed model. With Ai2, the training corpus is itself published - so allowing AI2Bot means your pages may appear in a dataset anyone can download and inspect. Depending on your position, that is either the most transparent form of AI training or the most exposing.
Be aware of a documentation gap. Ai2's crawler page gives the user-agent and says it "can be used to filter or reject traffic from our crawler if desired" - but does not actually state a robots.txt compliance policy. The community ai.robots.txt registry records it as respecting robots.txt, and that matches operator reports, but the vendor has not confirmed it in writing.
Volume is not the concern here. Ai2 is a research nonprofit crawling selectively rather than attempting broad coverage, so this is a content-policy decision rather than a server-load one.
How AI2Bot behaves
- Crawls selectively rather than exhaustively, so volume is typically modest.
- Ai2's crawler page does not state a robots.txt policy; compliance is community-reported rather than vendor-confirmed.
- Feeds corpora that are published openly, so collected content becomes publicly downloadable.
- No IP feed or reverse-DNS convention, so the user-agent cannot be authenticated.
Full user-agent string
Mozilla/5.0 (compatible) AI2Bot (+https://www.allenai.org/crawler)
Allow AI2Bot
Your content supports open, inspectable AI research rather than a closed commercial model - and you can see exactly what was collected.
User-agent: AI2Bot Allow: /
Block AI2Bot
You don't want your content in publicly released training corpora, where it is downloadable and permanent rather than merely absorbed.
User-agent: AI2Bot Disallow: /
How to verify AI2Bot
No published verification method
Ai2 publishes no IP range feed and no reverse-DNS convention, so AI2Bot traffic cannot be authenticated. Its crawler page offers the user-agent string as the means to "filter or reject" traffic, which is a filtering instruction rather than a verification mechanism. In practice the reputational cost of impersonating a research nonprofit is low, so treat unverified AI2Bot hits with the same caution as any unauthenticated user-agent.
Check an IP against this botCommonly confused with AI2Bot
AI2Bot FAQs
Does AI2Bot respect robots.txt?
Probably, but Ai2 does not say so in writing. Its crawler page only offers the user-agent for filtering traffic. The community ai.robots.txt registry lists it as compliant and operator reports agree, so treat this as well-supported but not vendor-confirmed.
What is different about allowing a nonprofit research crawler?
Ai2 publishes its training data openly, so your content does not just influence a model - it may appear in a dataset anyone can download and inspect. That is either more transparent or more exposing than commercial training, depending on your view.
Which models does AI2Bot feed?
Ai2's page says the content trains open language models without naming specific ones. Ai2's portfolio includes the OLMo family and Tulu, but the page does not explicitly confirm which receive crawler data.
Will AI2Bot generate heavy traffic?
Unlikely. Ai2 is a research nonprofit crawling selected domains rather than attempting broad web coverage, so this is a content-policy decision rather than a bandwidth one.
Can AI2Bot read your page right now?
Test any URL and see exactly what AI crawlers receive.