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How ChatGPT Browses the Web: What OAI-SearchBot and ChatGPT-User Do
ChatGPT uses two different bots to access the web — ChatGPT-User for browsing and OAI-SearchBot for search. Here's what each one does and how to manage them.
OpenAI operates multiple web crawlers, each with a different purpose. Understanding which bot does what is critical for managing your AI search visibility. Blocking the wrong bot means ChatGPT can’t cite your content. Blocking the right bot means opting out of training without losing AI search traffic.
OpenAI’s Web Crawlers
| Bot | User Agent | Purpose | Block Effect |
|---|---|---|---|
ChatGPT-User | ChatGPT-User | Real-time browsing when ChatGPT needs current information | Your site won’t appear in ChatGPT browsing results |
OAI-SearchBot | OAI-SearchBot | Powers ChatGPT’s search feature | Your site won’t appear in ChatGPT search results |
GPTBot | GPTBot | Collects training data for model improvement | Your content won’t be used for AI training |
ChatGPT-User: The Browsing Bot
When a user asks ChatGPT a question that requires current information, ChatGPT activates its browsing capability. ChatGPT-User is the bot that fetches web pages in real time.
When it’s used:
- Questions about current events or recent information
- When a user explicitly asks ChatGPT to browse the web
- Queries about specific URLs or websites
- Questions that ChatGPT’s training data can’t answer
What it does:
- Fetches the HTML content of web pages
- Follows links on those pages to find additional information
- Reads and extracts relevant information
- Cites the source in its response
Why you should allow it:
If ChatGPT-User can access your content, ChatGPT can cite your site when answering relevant questions. This is direct AI search traffic.
OAI-SearchBot: The Search Bot
OAI-SearchBot is newer and powers ChatGPT’s integrated search feature — when ChatGPT shows search results alongside its generated answer.
When it’s used:
- When ChatGPT’s search feature is activated
- For queries where ChatGPT presents search-style results with links
Why you should allow it: This bot directly powers the search results that appear in ChatGPT. Blocking it removes your site from those results.
GPTBot: The Training Bot
GPTBot crawls the web to collect data for training OpenAI’s models. It does not power real-time responses — it builds the knowledge that future model versions will have.
When it’s used:
- Continuously, independent of user queries
- Crawls broadly across the web
Why you might block it:
If you don’t want your content used for AI model training, block GPTBot. This has no effect on whether ChatGPT can cite your content in real time.
Recommended robots.txt Configuration
# Allow ChatGPT to browse and search your site (AI search visibility)
User-agent: ChatGPT-User
Allow: /
User-agent: OAI-SearchBot
Allow: /
# Block training data collection (optional — your preference)
User-agent: GPTBot
Disallow: /This configuration maximizes your ChatGPT visibility while opting out of training data collection.
Common Confusion
”I blocked GPTBot but ChatGPT still shows my content”
That’s expected. GPTBot is the training bot, not the browsing bot. ChatGPT-User and OAI-SearchBot are what power real-time results. If you only blocked GPTBot, ChatGPT can still browse and cite your site.
”I want to block all OpenAI access”
Block all three:
User-agent: ChatGPT-User
Disallow: /
User-agent: OAI-SearchBot
Disallow: /
User-agent: GPTBot
Disallow: /This prevents both AI search citation and training data collection from OpenAI.
”Will blocking GPTBot reduce my visibility in ChatGPT?”
No. OpenAI has explicitly stated that blocking GPTBot does not affect your visibility in ChatGPT’s browsing or search features. Those are powered by ChatGPT-User and OAI-SearchBot respectively.
Verifying Bot Access
To check if OpenAI’s bots are accessing your site:
- Check your server logs for the user agent strings
- Run an audit that checks your robots.txt for AI crawler directives
- Ask ChatGPT to browse a specific page on your site and see if it can
How Do I Check My OpenAI Bot Configuration?
What seoutils.dev checks: Our free audit analyzes your robots.txt specifically for AI crawler directives. We check all three OpenAI bots individually and report which are allowed, which are blocked, and what the impact is on your AI search visibility.
Run a free audit to see your AI crawler access status.
This is part of our AI Search Optimization series. Related: Managing AI Crawlers in robots.txt | How AI Search Engines Choose Sources.