GPTBot

GPTBot is the user agent OpenAI uses to crawl the web for ChatGPT. If GPTBot can access your pages, your content can inform how ChatGPT describes and recommends brands in your category; if you block it in robots.txt, you opt out of that visibility.

Blocking GPTBot is a real tradeoff, not an obvious win — it protects content from training use but also removes you from a fast-growing discovery surface. Most brands that want AI visibility should allow reputable AI crawlers like GPTBot, ClaudeBot and PerplexityBot.