Does cell.com block AI crawlers?
Blocks AI training and AI answers
cell.com blocks both AI training crawlers and AI answer crawlers in its robots.txt.
Checked from cell.com/robots.txt. Robots rules change; the live file is the source of truth.
- AI crawlers blocked
- 8 of 12
- AI bots named in robots.txt
- 9
- llms.txt
- Not found
- Popularity
- Tranco top 5,000 (#2,756)
Can AI assistants cite cell.com?
- ChatGPT search: its search crawler is blocked
- Claude: its search crawlers may read the site
- Perplexity: its search crawler is blocked
cell.com opts out of AI training by OpenAI, Anthropic, Google, Common Crawl, ByteDance, Meta. 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 cell.com |
|---|---|---|
| GPTBotOpenAI | AI training | Blocked |
| OAI-SearchBotOpenAI | AI answers | Some paths restricted |
| ChatGPT-UserOpenAI | AI answers | Blocked |
| ClaudeBotAnthropic | AI training | Blocked |
| Claude-SearchBotAnthropic | AI answers | Some paths restricted |
| Claude-UserAnthropic | AI answers | Some paths restricted |
| PerplexityBotPerplexity | AI answers | Blocked |
| Google-ExtendedGoogle | AI training | Blocked |
| Applebot-ExtendedApple | AI training | Some paths restricted |
| CCBotCommon Crawl | AI training | Blocked |
| BytespiderByteDance | AI training | Blocked |
| Meta-ExternalAgentMeta | AI training | Blocked |
How cell.com compares
- 19% of the 1,278 popular sites we checked block GPTBot; cell.com is one of them.
- 18% of the 1,278 popular sites we checked block ClaudeBot; cell.com is one of them.
- 14% of the 1,278 popular sites we checked block PerplexityBot; cell.com is one of them.
- Among 174 sites of similar popularity, 24% block at least one AI crawler.
The robots.txt rules that apply to AI crawlers
User-agent: * Disallow: /action Disallow: /help Disallow: /search Disallow: /feedback Disallow: /rss Disallow: /action/clickThrough Disallow: /action/showLogin Disallow: /page/account-confirmation-thanks Disallow: /media Disallow: /medical-research Disallow: /servlet/linkout Disallow: /na101/ Disallow: /na101v1/ Disallow: /na102/ Disallow: /doi/mlt/ Disallow: /cms/attachment/92c526c4-ef1f-4065-b12b-ca4ae0f3e84f/gr1* Disallow: /personalize/addFavoritePublication Disallow: /pb/widgets/* Disallow: /authored-by/ Allow: /action/showJournal Allow: /action/showXml Allow: /series Allow: /isbn Allow: /doi/book Allow: /.well-known/* User-agent: GPTBot Disallow: / User-agent: ChatGPT-User Disallow: / User-agent: CCBot Disallow: / User-agent: Google-Extended Disallow: / User-agent: PerplexityBot Disallow: / User-agent: anthropic-ai Disallow: / User-agent: ClaudeBot Disallow: / User-agent: Bytespider Disallow: / User-agent: meta-externalagent Disallow: /
Excerpt: only groups for all user-agents (*) or named AI crawlers, up to 40 rules per group.
Sites with a similar AI policy
Does cell.com block GPTBot?
Yes. As of Oct 2, 2026, cell.com's robots.txt disallows GPTBot, OpenAI's training crawler.
Can ChatGPT search show results from cell.com?
Its robots.txt blocks a ChatGPT search crawler, so ChatGPT search is unlikely to read or cite those pages.
Does cell.com have an llms.txt file?
We didn't find a valid llms.txt at cell.com/llms.txt when we checked.
Data: cell.com's public robots.txt and llms.txt, fetched by AskableHQ. Popularity rank from the Tranco list (ID Y83YG). Methodology.