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OpenAI, Google, Microsoft, Anthropic to honor robots.txt for AI training opt-out

Major AI companies including OpenAI, Google, Microsoft, and Anthropic have agreed to respect the robots.txt file's directive to opt out of AI training data. This move aims to give website owners more control over how their content is used for training AI models. The specific line to add to a robots.txt file will allow sites to signal their non-consent for AI training purposes. AI

IMPACT Grants website owners more control over AI training data, potentially impacting future model development.

RANK_REASON Agreement by major AI labs on a policy issue regarding data usage. [lever_c_demoted from significant: ic=1 ai=0.4]

Read on Mastodon — mastodon.social →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

OpenAI, Google, Microsoft, Anthropic to honor robots.txt for AI training opt-out

How we ranked this

Signal score
4 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Research
Agreement by major AI labs on a policy issue regarding data usage. [lever_c_demoted from significant: ic=1 ai=0.4]
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
policy
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
Standard
On-topic for AI-industry coverage; kept in the public index.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [1]

  1. Mastodon — mastodon.social TIER_1 English(EN) · madrobotblog ·

    OpenAI, Google, Microsoft and Anthropic will obey one robots.txt line that opts your site out of AI training OpenAI, Google, Microsoft and Anthropic will honour

    OpenAI, Google, Microsoft and Anthropic will obey one robots.txt line that opts your site out of AI training OpenAI, Google, Microsoft and Anthropic will honour one robots.txt rule that opts a site out of AI training. Here’s the line to add and its limits. # OpenAI # SEO # AI htt…