GPTBot vs Google-Extended

Compare OpenAI's GPTBot crawler and Google's Google-Extended token — two different approaches to AI training data consent.

Vendor
OpenAI
Google
UA Patterns
GPTBot, gptbot
Google-Extended
robots.txt
Respects robots.txt
Respects robots.txt
Description
OpenAI's training data crawler for GPT models including ChatGPT and GPT-4.
Google's AI training token controlling use of Googlebot-crawled content for AI.

Analysis

GPTBot is a standalone crawler that visits your site to collect training data for OpenAI's models. Google-Extended is not a crawler but a robots.txt token that controls whether content already crawled by Googlebot can be used for Google's AI training (Gemini models).

The key difference: blocking GPTBot stops a separate crawler from visiting; blocking Google-Extended tells Google not to use Googlebot-collected content for AI training. Both provide opt-out mechanisms, but through different technical approaches.

When to manage GPTBot

Block GPTBot to prevent OpenAI's separate crawler from accessing your content for GPT model training.

How to block GPTBot

When to manage Google-Extended

Block Google-Extended to prevent Google from using your Googlebot-indexed content for Gemini AI training — without affecting Google Search indexing.

How to block Google-Extended

Manage both with Switch

Switch detects GPTBot, Google-Extended, and 40+ other AI agents in real-time. Build custom journeys for each — block, challenge, serve markdown, or redirect. Five-minute setup, no server changes.

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