Does si.edu block AI crawlers?
Open to AI crawlers
si.edu doesn't block any of the major AI crawlers we track in its robots.txt.
Checked from si.edu/robots.txt. Robots rules change; the live file is the source of truth.
- AI crawlers blocked
- 0 of 12
- AI bots named in robots.txt
- 0
- llms.txt
- Not found
- Popularity
- Tranco top 2,000 (#1,839)
Can AI assistants cite si.edu?
- ChatGPT search: its search crawlers may read the site
- Claude: its search crawlers may read the site
- Perplexity: its search crawlers may read the site
si.edu doesn't opt out of AI model training through robots.txt. Training crawlers and answer crawlers are separate: blocking training doesn't by itself remove a site from AI answers.
AI crawler access, bot by bot
| Crawler | Used for | Status on si.edu |
|---|---|---|
| GPTBotOpenAI | AI training | Some paths restricted |
| OAI-SearchBotOpenAI | AI answers | Some paths restricted |
| ChatGPT-UserOpenAI | AI answers | Some paths restricted |
| ClaudeBotAnthropic | AI training | Some paths restricted |
| Claude-SearchBotAnthropic | AI answers | Some paths restricted |
| Claude-UserAnthropic | AI answers | Some paths restricted |
| PerplexityBotPerplexity | AI answers | Some paths restricted |
| Google-ExtendedGoogle | AI training | Some paths restricted |
| Applebot-ExtendedApple | AI training | Some paths restricted |
| CCBotCommon Crawl | AI training | Some paths restricted |
| BytespiderByteDance | AI training | Some paths restricted |
| Meta-ExternalAgentMeta | AI training | Some paths restricted |
How si.edu compares
- 19% of the 1,278 popular sites we checked block GPTBot; si.edu does not.
- 18% of the 1,278 popular sites we checked block ClaudeBot; si.edu does not.
- 14% of the 1,278 popular sites we checked block PerplexityBot; si.edu does not.
- Among 147 sites of similar popularity, 23% block at least one AI crawler.
The robots.txt rules that apply to AI crawlers
User-agent: * Allow: /core/*.css$ Allow: /core/*.css? Allow: /core/*.js$ Allow: /core/*.js? Allow: /core/*.gif Allow: /core/*.jpg Allow: /core/*.jpeg Allow: /core/*.png Allow: /core/*.svg Allow: /profiles/*.css$ Allow: /profiles/*.css? Allow: /profiles/*.js$ Allow: /profiles/*.js? Allow: /profiles/*.gif Allow: /profiles/*.jpg Allow: /profiles/*.jpeg Allow: /profiles/*.png Allow: /profiles/*.svg Disallow: /core/ Disallow: /profiles/ Disallow: /README.md Disallow: /composer/Metapackage/README.txt Disallow: /composer/Plugin/ProjectMessage/README.md Disallow: /composer/Plugin/Scaffold/README.md Disallow: /composer/Plugin/VendorHardening/README.txt Disallow: /composer/Template/README.txt Disallow: /modules/README.txt Disallow: /sites/README.txt Disallow: /themes/README.txt Disallow: /web.config Disallow: /admin/ Disallow: /comment/reply/ Disallow: /filter/tips Disallow: /node/add/ Disallow: /search/ Disallow: /user/register Disallow: /user/password Disallow: /user/login Disallow: /user/logout Disallow: /media/oembed
Excerpt: only groups for all user-agents (*) or named AI crawlers, up to 40 rules per group.
Sites with a similar AI policy
Does si.edu block GPTBot?
No. As of Oct 2, 2026, si.edu's robots.txt doesn't block GPTBot, though some paths are restricted for all crawlers.
Can ChatGPT search show results from si.edu?
Its robots.txt doesn't block OAI-SearchBot or ChatGPT-User, so ChatGPT's search crawlers may read it. Whether pages are actually shown depends on ChatGPT.
Does si.edu have an llms.txt file?
We didn't find a valid llms.txt at si.edu/llms.txt when we checked.
Data: si.edu's public robots.txt and llms.txt, fetched by AskableHQ. Popularity rank from the Tranco list (ID Y83YG). Methodology.