Tech Giants Unite to Offer Universal AI Training Opt-Out for Websites

Google, OpenAI, Microsoft, and Anthropic support a new, simplified system for content control.

A laptop displaying a "robots.txt" file with a no-robot sign and a shield with a lock.
This section explains how the new system will allow website owners to control AI model training.
Key Points

Website owners will soon have a simplified way to prevent their content from being used to train AI models, thanks to a new shared system supported by major tech companies.

  • Google, OpenAI, Microsoft, and Anthropic are supporting a new AI training opt-out system.
  • The system uses a common instruction in a website's robots.txt file.
  • It simplifies content control for publishers, replacing multiple company-specific instructions.
  • Publishers can restrict AI training while maintaining search engine discoverability.
  • Anthropic has started implementation; Google and Microsoft plan adoption by 2027.
  • OpenAI will implement the system in the coming months.

Major technology companies, including Google, OpenAI, Microsoft and Anthropic, are supporting a shared system that will give website owners greater control over whether their content is used to train artificial intelligence (AI) models.

The proposed system will use a common instruction in a website's robots.txt file. Currently, publishers often need to create separate instructions for different AI companies. The new approach aims to simplify this process by allowing participating providers to recognise a shared preference.

What Does It Mean for Website Owners?

The proposed control will allow publishers to restrict the use of selected website content for AI training while keeping their websites discoverable through traditional search engines.

However, the system is not yet fully operational. Anthropic has begun implementation, Google is targeting 2027, Microsoft plans to adopt it from February 2027, and OpenAI says implementation will follow in the coming months.

The move is being seen as an important step towards giving publishers more control over their digital content as AI technology continues to expand.

Published: Sunday, 1 November 2026 | 12:37 PM IST

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