ChatGPT-User vs Claude-User

Compare the real-time browsing agents of OpenAI's ChatGPT and Anthropic's Claude — both fetch live web content when users ask questions.

Vendor
OpenAI
Anthropic
UA Patterns
ChatGPT-User, chatgpt
Claude-User
robots.txt
Respects robots.txt
Respects robots.txt
Description
OpenAI's real-time browsing agent when ChatGPT users request live web content.
Anthropic's real-time web agent for when Claude users browse live content.

Analysis

ChatGPT-User and Claude-User serve the same purpose: fetching web content in real-time when a user asks their respective AI assistant to look something up. ChatGPT-User has significantly higher volume due to ChatGPT's larger user base. Claude-User is newer and lower volume but growing rapidly as Claude expands its web browsing capabilities.

Both are separate from their companies' training crawlers (GPTBot and ClaudeBot), allowing you to enable browsing while blocking training. Both respect robots.txt independently.

When to manage ChatGPT-User

Allow ChatGPT-User for maximum AI assistant visibility — ChatGPT has the largest active user base among AI assistants.

How to block ChatGPT-User

When to manage Claude-User

Allow Claude-User to be visible to Claude's growing user base. Lower current volume means minimal server impact.

How to block Claude-User

Manage both with Switch

Switch detects ChatGPT-User, Claude-User, and 40+ other AI agents in real-time. Build custom journeys for each — block, challenge, serve markdown, or redirect. Five-minute setup, no server changes.

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