Google will adopt a shared AI-training opt-out for websites

Google plans to support a new robots.txt signal in early 2027 that lets a website state its AI training preferences once for several AI companies. Bing, OpenAI and Anthropic have also said they plan to adopt it.

What we know

Google plans support in early 2027
OpenAI and Anthropic plan to adopt it

Not yet

Final IETF standard still being worked out

The proposal comes from a working group of the Internet Engineering Task Force, the body that sets internet standards, and is still a draft.

A site that opts out of training with the shared token will be treated as if it had blocked Google-Extended, Google's existing control. Company-specific controls will keep working alongside it.

Tech · 4 d ago

Google will adopt a shared AI-training opt-out for websites

The proposal comes from a working group of the Internet Engineering Task Force, the body that sets internet standards, and is still a draft.

A site that opts out of training with the shared token will be treated as if it had blocked Google-Extended, Google's existing control. Company-specific controls will keep working alongside it.

Google will adopt a shared AI-training opt-out for websites

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