AI Training Opt-Out: One robots.txt Rule Google, Bing and OpenAI Will Respect

robots.txt file showing the __usage_ai-training rule that opts a website out of AI training

Until now, an AI training opt-out meant writing a separate robots.txt block for every AI company: Google-Extended for Gemini, GPTBot for OpenAI, ClaudeBot for Anthropic, and so on. That list keeps getting longer. On October 30, 2026, Google, Microsoft and…

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