Question 1

Should I block GPTBot to protect my content from AI training?

Accepted Answer

For most sites, no. Originality.ai found 35.7% of the top 1,000 sites block GPTBot, but a Hack/Hackers analysis showed major publishers who blocked AI bots subsequently lost roughly 23% of their traffic. Unless you have a multi-million-dollar licensing deal (NYT-Amazon, News Corp-OpenAI) or your business model depends on closed expertise, blocking removes your only path into AI search results — which is increasingly where customers are starting their journeys. The default for non-publishers should be Allow.

Question 2

What is the impact of allowing AI bots on my GEO-Score?

Accepted Answer

Allowing AI bots is the prerequisite for every other GEO metric. The analyzer treats bot access as a gating factor: if AI crawlers cannot reach your pages, your scores for citations, schema, content structure, and freshness all become academic. Sites that switch from blocking to allowing typically see AI-driven traffic appear within 2-6 weeks, depending on how often each bot recrawls. The change has no negative SEO impact because Googlebot and Google-Extended are independent — blocking one does not affect the other.

Question 3

What is the difference between GPTBot, ChatGPT-User, and OAI-SearchBot?

Accepted Answer

OpenAI uses three crawlers for distinct purposes. GPTBot crawls broadly to gather training data for future model versions. OAI-SearchBot indexes pages for ChatGPT's built-in search feature, which surfaces results in real-time during conversations. ChatGPT-User is triggered when an individual ChatGPT user asks the model to fetch a specific URL or browse a topic. To be fully visible in OpenAI's ecosystem you should allow all three — blocking GPTBot only stops training-data inclusion, not live citations.

Question 4

Does blocking Google-Extended affect my Google Search rankings?

Accepted Answer

No. Google's official documentation states that Google-Extended is a separate token from Googlebot, and blocking it has no impact on search rankings, indexation, or visibility. Google-Extended controls only whether your content can be used to train Gemini and to ground Google AI Overviews answers. Many publishers block Google-Extended to limit training-data use while keeping full Search presence — though this also reduces the chance of being cited inside AI Overviews.

Question 5

Why are AI bots crawling my site so much without sending traffic back?

Accepted Answer

This is the crawl-to-referral gap. Cloudflare's 2025 analysis found Anthropic's ratio peaked near 500,000:1 (500,000 page fetches per human referral) before settling at 25,000:1 to 100,000:1, while OpenAI's GPTBot ratio sat around 1,200-3,700:1. The imbalance is real, but the alternative — blocking — eliminates the small but growing referral stream entirely and removes you from the answers users see, even when those answers do not click through. For most sites the best response is to allow access while ensuring crawl efficiency (fast responses, accurate sitemaps) rather than block.

Question 6

Should I implement an llms.txt file alongside robots.txt?

Accepted Answer

Not as a substitute for robots.txt. The llms.txt proposal from Jeremy Howard (September 2024) is an interesting standard for guiding AI to high-value resources, but as of late 2025 no major AI crawler — OpenAI, Anthropic, Google, Perplexity — has confirmed they read or follow llms.txt. An audit of server logs across hundreds of sites in October 2025 found zero LLM crawlers requesting llms.txt files. It costs little to add as a future-proofing measure, but every access decision today still depends on robots.txt, server response codes, and CDN/WAF configuration.

AI Bot Access

What is AI Bot Access?

Why AI Bot Access Matters

Bot Access Is a Binary Gatekeeper

Most Blocking Is Accidental

AI Crawlers Are Aggressive — But Selective

What the Research Says

Quick Tips for AI Bot Access

Should I block GPTBot to protect my content from AI training?

What is the impact of allowing AI bots on my GEO-Score?

What is the difference between GPTBot, ChatGPT-User, and OAI-SearchBot?

Does blocking Google-Extended affect my Google Search rankings?

Why are AI bots crawling my site so much without sending traffic back?

Should I implement an llms.txt file alongside robots.txt?

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