How to control which AI bots index your Next.js site for search vs. training
Developers blocking GPTBot to prevent AI training may unknowingly also hurt their chances of appearing in ChatGPT Search, since the two systems use entirely separate crawlers. OpenAI, Anthropic, and Perplexity each operate distinct bots for training crawls, search indexing, and user-triggered fetches, meaning rules for one do not automatically apply to the others. A practical guide for Next.js App Router sites explains how to configure robots.ts and sitemaps to allow search bots like OAI-SearchBot and Claude-SearchBot while still blocking training crawlers such as GPTBot and ClaudeBot. The emerging practice, called Generative Engine Optimization (GEO), treats AI visibility as three separate pipelines rather than a single toggle. Site owners are advised to maintain healthy web indexes and keep search bots permitted in robots.txt to remain eligible for citations in AI-powered answer engines.
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