1 in 10 AI tools blocks GPTBot, but many owners may not know it
A study of 9,037 live AI tools conducted on September 6–7, 2026, found that 10.5% explicitly block OpenAI's GPTBot in their robots.txt files, often without the site owner's direct intent. Hosting providers appear to play a significant role: 22.4% of Cloudflare-hosted sites blocked GPTBot, compared to just 5.2% on Vercel, suggesting platform-level toggles may be writing crawler policy automatically. Notably, 88.8% of sites that block GPTBot still allow OAI-SearchBot, a deliberate split that opts out of AI training while remaining eligible for ChatGPT search citations. Similar patterns were observed for Anthropic's ClaudeBot and Google-Extended, both blocked by roughly 10% of sampled sites. Researchers urge developers to manually verify their robots.txt after deployments or hosting changes, as the file functions as a content policy, not merely a technical configuration.
This is an AI-generated summary. ShortSingh links to the original source for the complete article.
Discussion (0)
Log in to join the discussion and vote.
Log in