The Complete Guide to AI Bots in robots.txt: GPTBot, ClaudeBot, Google-Extended & Perplexity (2026)
Are AI crawlers scraping your content or citing your business? Here is the definitive guide to configuring robots.txt permissions for all 13 major AI user-agents.
The New Wave of AI Web Crawlers
In 2026, web traffic is divided between traditional search spiders, AI model training bots, and live AI search engines.
Understanding which bot does what is crucial for protecting proprietary data while maximizing search citations:
| Bot User-Agent | Operator | Primary Function | Recommended Action |
|---|---|---|---|
| OAI-SearchBot | OpenAI | Live search citations in ChatGPT Search | Allow |
| GPTBot | OpenAI | Offline model training for GPT models | Allow or Disallow based on preference |
| ChatGPT-User | OpenAI | User-initiated page browsing | Allow |
| PerplexityBot | Perplexity | Indexing pages for Perplexity answers | Allow |
| Perplexity-User | Perplexity | Real-time user link verification | Allow |
| Google-Extended | Powers Gemini and Google AI Overviews | Allow | |
| Googlebot | Traditional Google Search index | Allow (Mandatory) | |
| ClaudeBot | Anthropic | Training Claude models | Allow or Disallow |
| Applebot-Extended | Apple | Training Apple Intelligence | Allow |
How to Check Which AI Bots Can Access Your Site
Many business websites accidentally block all AI engines due to legacy CMS templates containing blanket disallow statements:
```txt # DANGEROUS: Blocks all AI search engines from finding your site User-agent: * Disallow: / ```
To verify which bots have access to your live domain, use Vyzma's Free AI Crawler Permission Checker.
Best-Practice robots.txt Template for Maximum AI Citations
```txt # Welcome traditional and AI search crawlers User-agent: Googlebot Allow: /
User-agent: OAI-SearchBot Allow: /
User-agent: PerplexityBot Allow: /
User-agent: Google-Extended Allow: /
User-agent: Applebot-Extended Allow: /
# Sitemap & LLMs Discovery Manifests Sitemap: https://vyzma.in/sitemap.xml ```
Frequently Asked Questions
Frequently Asked Questions
Q: Will blocking GPTBot hurt my Google rankings?
A: No. GPTBot is operated by OpenAI, whereas Google Search rankings are determined by Googlebot. Blocking GPTBot will not lower your traditional Google ranking.
Q: What is the difference between OAI-SearchBot and GPTBot?
A: GPTBot scrapes text to train OpenAI foundation models. OAI-SearchBot retrieves web content specifically when ChatGPT users perform live searches, allowing your site to be linked as a source.
Q: Should local Indian businesses allow AI bots?
A: Yes. More consumers are using AI assistants to find clinics, lawyers, real estate developers, and agencies. Allowing search bots ensures your business is cited in AI recommendations.
Q: Where should my robots.txt file be hosted?
A: Your robots.txt file must be located at the root of your domain: https://yourdomain.com/robots.txt.
Q: How can Vyzma configure my robots.txt and AI visibility?
A: We conduct full GEO audits, configure compliant robots.txt permissions, build llms.txt manifests, and deploy schema graphs to maximize AI search referrals.
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