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AI Crawlers vs AI Referrals: GPTBot, ClaudeBot and What to Actually Block

calendar_today August 2, 2026 person KISSmetrics Editorial domain kissmetrics

GPTBot, OAI-SearchBot, ChatGPT-User, ClaudeBot, Claude-User, PerplexityBot, Google-Extended, CCBot and Bytespider explained. Why crawlers never show up in client-side analytics, how to tell a crawler hit from a human referral, and the real cost of blocking each one in robots.txt.

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