AI Training Opt-Out
Definition
AI training opt-out is the practice of signaling or enforcing that public site content should not be used to train machine learning models.
By Vinespire Editorial Team, Editorial ·
Crawlers & botsAI search glossary
This term is part of the full AI search glossary.
Full definition
Common technical mechanisms include robots.txt Disallow for training-oriented user-agents (GPTBot, ClaudeBot, CCBot, Google-Extended, Applebot-Extended, and others) and vendor-specific product tokens. Mechanisms differ by company and change over time; there is no single universal “no-AI” header yet adopted everywhere.
Opt-out is agent-specific: blocking one crawler does not block all. Live browsing and search-indexing agents may still fetch pages if allowed. Legal opt-outs and licenses may exist separately from robots.txt.
Teams should document which agents are blocked or allowed and revisit after vendor policy updates. See Training Crawler, Content Licensing, and Disallow Directive.
Example
A publisher allows Googlebot and OAI-SearchBot for discovery but Disallows GPTBot, CCBot, and Google-Extended for training-related preferences.