A Common Way to Opt Out of AI Training via robots.txt | 4 Companies Announce Support

When you do not want your site used for AI training, you previously had to list company-specific names in your robots.txt ...

A New Way to Opt-Out of AI Training in robots.txt | What is __usage_ai-training? Verifying How to Read It with Python [October 2026]

On October 30, 2026, it was reported that OpenAI, Google, Microsoft, and Anthropic announced they would respect a new ...
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Some Sites Use llms.txt Like robots.txt, Common Crawl Finds

Most llms.txt files came from templates, and many contain no links. Some sites write crawler restrictions into llms.txt. A block written only in llms.txt does nothing. Common Crawl analyzed 584,107 ...