GPTBot collects training data. OAI-SearchBot fetches pages when ChatGPT runs a live search. Blocking GPTBot has no effect on whether ChatGPT can cite you, and every major AI platform has made the same split, so the citation crawler is the one to allow by name.
When businesses learn that AI engines can cite their pages in live search answers, the first question I get about robots.txt is: “I blocked GPTBot, does that mean ChatGPT can’t use my content?”
The answer is no. Blocking GPTBot has no effect on whether ChatGPT cites your pages. The two crawlers are different agents with different jobs, and treating them as interchangeable is the most common robots.txt mistake I find in GEO audits.
What does GPTBot actually do?
GPTBot (User-agent: GPTBot) is OpenAI’s model training crawler. It visits pages to collect content that may be used to train future versions of OpenAI’s language models, GPT-4, GPT-4o, and whatever comes next.
Blocking GPTBot is a legitimate choice. If you don’t want your writing, your client work, or your proprietary methodology showing up in an AI model’s training data, adding this to your robots.txt is the correct mechanism:
User-agent: GPTBot
Disallow: /That rule will stop GPTBot from crawling your site. Your content won’t be consumed for model training.
What it won’t do is affect ChatGPT’s ability to cite your pages in search answers. That’s a different crawler entirely.
What does OAI-SearchBot actually do?
OAI-SearchBot (User-agent: OAI-SearchBot) is OpenAI’s live-search citation crawler. When a ChatGPT user asks a question that triggers a web search, OAI-SearchBot fetches pages in real time to find answers. The pages it can read are the pages ChatGPT can cite.
If OAI-SearchBot is blocked, or simply not explicitly allowed, ChatGPT cannot retrieve your pages when generating search answers. Your site becomes invisible to ChatGPT at the citation layer, regardless of how well you rank or how well-structured your content is.
The two crawlers are architecturally separate: one builds the model, the other searches the web when the model is running. Blocking one has no effect on the other, and access is only the first of the filters that decide whether you get cited.
Why do people confuse the two OpenAI crawlers?
The naming is genuinely confusing. Both come from OpenAI. Both crawl the web. “GPTBot” sounds like it would be the agent used by ChatGPT, but it isn’t. OAI-SearchBot is the ChatGPT live-search agent, and it has a much lower profile in SEO discussions than GPTBot.
The same pattern exists at Anthropic. Anthropic trains Claude using a separate crawler, while ClaudeBot (User-agent: ClaudeBot) handles Claude’s live web search citations. Blocking one doesn’t affect the other.
At Perplexity, PerplexityBot handles live-search citations. At Google, Googlebot-Extended is used for AI Mode and AI Overviews retrieval (distinct from the standard Googlebot used for classic search indexing).
Each major AI platform has separated its training-data collection from its live-search citation function. The citation crawler is the one that determines whether you get cited.
What should you check in your own robots.txt?
Open your robots.txt file (accessible at yourdomain.com/robots.txt) and look for two things.
Is OAI-SearchBot named anywhere in the file?
Many sites have a rule for GPTBot and nothing for OAI-SearchBot, which means OAI-SearchBot is covered by the User-agent: * wildcard rule (typically Allow: /). That’s fine if the wildcard allows crawling. But if you have a restrictive wildcard, OAI-SearchBot may be inadvertently blocked.
Is a wildcard rule catching it by default?
A blanket Disallow: / under User-agent: * blocks everything, including every AI citation crawler, unless each one is explicitly allowed above it.
The safest configuration for a site that wants AI citations, and is comfortable with model training data collection being blocked, is explicit: name the crawlers you want to allow, name the ones you want to block, and don’t rely on wildcard fallback for the distinction.
What does a correct AI crawler configuration look like?
A robots.txt that blocks training crawlers while explicitly allowing citation crawlers looks like this:
User-agent: *
Allow: /
# AI citation crawlers, explicitly allowed
User-agent: OAI-SearchBot
Allow: /
User-agent: ClaudeBot
Allow: /
User-agent: PerplexityBot
Allow: /
User-agent: Googlebot-Extended
Allow: /
# AI training crawlers, blocked
# Blocking GPTBot does NOT prevent ChatGPT from citing your pages.
User-agent: GPTBot
Disallow: /The explicit allows for the citation crawlers make intent clear and prevent any wildcard rule from catching them unintentionally.
How does Google’s crawler split differ from OpenAI’s?
Google’s situation is slightly different because its training and search functions are less clearly separated than OpenAI’s. Standard Googlebot handles classic search indexing, and AI Overviews retrieves from that same index, so blocking standard Googlebot would also affect AI Overviews.
Google’s guidance on AI Overviews is consistent: content that ranks in the classic index and is well-structured for extraction will appear in AI Overviews. There’s no separate citation crawler to configure. The Googlebot-Extended agent specifically handles AI Mode (Google’s more conversational search product), and explicitly allowing it is worth doing for sites that want visibility in that channel.
Does blocking GPTBot hurt you in any way?
Not for citations, which is the point of this post, but it isn’t cost-free either. Blocking training crawlers means your content is less likely to be represented in the model’s own parametric knowledge, the things it can say without searching. When someone asks ChatGPT a general question and it answers from memory rather than running a search, you aren’t in that pool.
For a Metro Vancouver property manager this matters far less than it sounds. Nobody’s model recalls your firm from training data regardless; the queries that name a local business almost always trigger a live search, which is exactly the path OAI-SearchBot serves. So blocking GPTBot while allowing the citation crawlers is a reasonable trade for most local firms, and it’s the configuration above.
The decision changes if you publish genuinely distinctive material you would rather have absorbed than merely cited. That’s a judgment about your content, not a technical default.
How do you confirm a citation crawler actually reached your site?
Check your server access logs and filter by user agent. A real visit from OAI-SearchBot appears there with a timestamp and the path it requested, which is the only direct evidence available, since Search Console reports on Google’s access only and there is no equivalent dashboard for the AI crawlers.
If your host doesn’t expose raw logs, the practical substitute is to ask the engines directly: run a few queries where you’d expect to appear and see whether you’re named and linked. It’s coarser evidence, but a citation is proof of access, and repeated absence across the queries you should own is worth investigating at the robots.txt layer before assuming it’s a content problem.
AI crawler configuration is one of the checks in every technical audit I run. If you want to know which crawlers can reach your site, and whether any are blocked by accident, a free audit shows you. The audit is the next step.