Which websites does ChatGPT find? AEO read from OpenAI's official documentation
SHORT ANSWER
Per OpenAI's documentation, three facts are established. ChatGPT Search rewrites the question into one or more targeted queries and runs follow-up searches if needed. To be included, a site must let OAI-SearchBot crawl it and must not block OpenAI's published IP ranges. And ranking rests on several factors, with OpenAI stating there is no way to guarantee top placement.
How ChatGPT Search searches the web
Three behaviours are described directly by OpenAI in the ChatGPT Search documentation. Everything below is confirmable in that document; our interpretation is kept separate in the next section.
It rewrites the question into search queries
ChatGPT Search does not search the user’s question verbatim. It rewrites it into one or more targeted queries and sends those to search providers. In the document’s own example, a long natural-language question (“what are the latest developments in cancer drugs targeting CCR8?”) becomes a specific query such as “CCR8 immunotherapy drug development 2025”. Approximate IP-based location, and information from enabled memory, can be reflected in the rewriting.
It may search more than once
After reviewing the initial results it sends more specific follow-up searches to other search providers where needed. For reference, the third-party search providers named in the documentation are Bing and Shopify — ChatGPT visibility moves on a path separate from Google rankings.
It answers from web sources and cites them
Answers that used search can carry inline citations, and the Sources panel below the answer shows the full set of cited sources. AI citation and search visibility are not separate worlds — information that gets cited still has to sit on a findable web page. A high search ranking does not, however, mean it will necessarily be cited.
The visibility conditions OpenAI states officially
The same document’s guidance for site owners is short and clear.
- Allow OAI-SearchBot to crawl — to be included in ChatGPT search, the search crawler OAI-SearchBot has to be able to read the site. It is a separate bot from the training crawler GPTBot and is controlled separately in robots.txt
- Allow the published IP ranges — your host, CDN or firewall must not block traffic from OpenAI’s published IP addresses. robots.txt open while a security appliance blocks the bot genuinely happens
- Ranking factors — the whole of the official explanation is that “ranking in ChatGPT Search is based on several factors to help users find reliable, relevant information”, followed by this: “There is no way to guarantee top placement.”
That last sentence is the most important thing in this article. Navirang does not guarantee first place in ChatGPT — because OpenAI’s official position is that it cannot be guaranteed. What we do is build the technical, content and measurement environment that raises the chance AI finds, understands and cites your information. If you meet a service offering a guarantee, show them that sentence.
Official facts and Navirang’s practical reading
Left is fact from OpenAI’s documentation; right is the practical reading we draw from it — the reading is Navirang’s judgement, not an official ranking formula.
| OpenAI’s stated fact | Navirang’s practical reading |
|---|---|
| It rewrites the question into one or more targeted queries | You have to be findable across the search intents derived from a question, not just its literal sentence. That means one page answering one subject deeply, not a thin page per query variant |
| It runs more specific follow-up searches after reviewing initial results | Documents answering narrow, specific sub-questions become candidates for the follow-up searches, not only broad ones |
| It uses third-party search providers (Bing and Shopify named) | Optimizing for Google alone is not enough. Bing indexing has to be checked separately — it is why our own audit found a missing Bing index |
| Allowing OAI-SearchBot and the IP ranges is the precondition for inclusion | Do not look only at robots.txt; audit the bot-blocking rules in the CDN, WAF and hosting too. Allowing is the starting line, not a guarantee |
| There is no way to guarantee top placement | “Guaranteed first place” is a warning sign, not a sales line. Performance is confirmed by repeated measurement, not by a guarantee |
From question to answer — the flow
| Stage | What happens |
|---|---|
| ① User question | Asked as a natural-language sentence |
| ② Intent parsing | The question’s intent is interpreted (location and memory can be reflected) |
| ③ Query rewriting | One or more targeted queries generated |
| ④ Web retrieval | Candidates gathered from search providers plus own collected documents; follow-up searches if needed |
| ⑤ Source comparison | Information across sources cross-checked |
| ⑥ Answer generation | Synthesised into an answer |
| ⑦ Source citation | Inline citations and the Sources panel |
The core task we draw from this flow is the following. The AEO task is not to repeat the user’s exact sentence on a page but to make your website a useful source candidate at any point in the several search paths derived from that question. (This is Navirang’s practical reading built on the official explanation, not a ranking formula OpenAI published.)
An actual observation — why Navirang was found for “tell me about AEO agencies”
On 13 August 2026, asked in Korean for AEO answer engine optimization specialists, ChatGPT named Navirang first in its candidate list of Korean AEO agencies and cited a document on our site as a source (a single observation, reproduction not guaranteed — the full observation conditions are in this article).
What stands out is how the answer described us. It stated that we provide AEO audit → citable content design → structured data → citation monitoring across ChatGPT, Perplexity, Google AI Overviews and Naver AI Search — exactly the service description written on our site. From this we form a hypothesis: the search intent derived from the question (“a company in Korea explicitly offering AEO as a specialist service”) may have had high semantic relevance to our page’s service description, which is why we surfaced as a candidate. We did not observe ChatGPT’s internal ranking, so it is offered only as a hypothesis.
Six things to check for ChatGPT search visibility
- Can AI crawlers reach you? — OAI-SearchBot allowed in robots.txt, no CDN or WAF blocking, correct HTTP responses, body text readable without JavaScript. It is the first item in the audit
- Does the page answer the question clearly? — copy like “building a new future with AEO” connects to no search intent at all. Who provides what, to whom, and how, has to be in the sentences
- Does it cover a question area rather than one keyword? — beyond “AEO agency”, users ask for “answer engine optimization company”, “ChatGPT visibility agency” and so on. Cover it with one document that treats the subject deeply plus clear sub-topic documents, not a thin page per variant
- Is there information worth citing? — not sales copy but facts that can be cut out: your own research, definitions, figures, comparisons, methodology. Our regional field data is an example of such primary material
- Does the information agree with third-party sources? — brand meaning sharpens when the same area of expertise is confirmable in press, partner and industry material beyond your own claims. There is no formula of the sort “N external links equals a ranking rise”, though
- Are you actually measuring the result? — settle a core question set, record brand appearance, citation sources and competitor appearance across engines regularly, and analyse why you appeared and why you dropped out. Metrics and measurement design are in this article
What OpenAI’s and Google’s guidance have in common
Put this article next to our separate analysis of Google’s generative AI search guide and the official documentation of two different companies points the same way. Google emphasises the existing SEO foundation, unique content and crawlability, and states that AI-specific devices such as llms.txt are unnecessary for its search; OpenAI talks about crawler access, reliability and relevance, and states that top placement cannot be guaranteed.
The platforms differ, but the common ground is clear: a findable technical structure and trustworthy content matter more than a special device that only fools AI. That does not mean the two systems are the same — their retrieval paths and ranking methods differ, so measurement has to be done separately.
Five misconceptions about ChatGPT AEO
- “Just open OAI-SearchBot and you will appear” — no. Allowing is the precondition for inclusion, not a visibility device
- “Add a particular schema and ChatGPT will recommend you” — there is no official basis for that guarantee. Schema is a supporting means of conveying facts
- “Create llms.txt and your ChatGPT ranking rises” — OpenAI’s documentation does not mention llms.txt. Its use differs by platform and it is not an all-purpose ranking factor
- “Repeating keywords makes it easier for AI to understand” — under a query-rewriting architecture what matters is clear description and information quality, not repetition
- “An AEO agency can guarantee first place in ChatGPT” — per OpenAI’s own explanation, there is no way to guarantee top placement
Can ChatGPT find your site?
A Navirang AEO audit does not look at keywords alone. It checks AI crawler accessibility, the semantic clarity of the core service description, answer-shaped content structure, brand entity consistency, actual AI visibility for the main questions, and citation share against competitors. You can start from the free AEO audit request.
References
- OpenAI Help — ChatGPT Search — the primary source for query rewriting, search providers, citation, OAI-SearchBot and “no way to guarantee top placement” (confirmed 13 August 2026)
- OpenAI — official crawler documentation — the distinction between OAI-SearchBot and GPTBot
- Google Search Central — optimizing for AI-powered features — see the separate analysis for the comparison
Frequently asked questions
Q How do we get our website to appear in ChatGPT search?
A Two preconditions are officially confirmed: allow OAI-SearchBot to crawl in robots.txt, and make sure your host, CDN or firewall does not block OpenAI's published IP ranges. That is the technical basis for being findable, not a guarantee of visibility. On top of it you need content that answers questions clearly and consistent brand information before you become an actual citation candidate.
Q What is OAI-SearchBot?
A OpenAI's search crawler. It collects the web documents ChatGPT references when building a search-based answer. It is a separate bot from GPTBot, which collects training data, so it can be controlled independently in robots.txt — blocking GPTBot to keep your content out of training while allowing OAI-SearchBot for search visibility is a valid combination.
Q Does ChatGPT use only Google search results?
A No. OpenAI's documentation states that ChatGPT Search uses third-party search providers, naming Bing and Shopify, and adds documents collected directly by OAI-SearchBot. Google rankings and ChatGPT visibility are separate paths.
Q Does ChatGPT change the search terms before searching?
A Yes, and it is stated in the documentation. ChatGPT Search rewrites the user's question into one or more targeted queries, sends them to search providers, reviews the initial results and, if needed, runs more specific follow-up searches. Location information and enabled memory can be reflected in the rewriting. It is one reason the same question can produce different results for different people.
Q Can top placement in ChatGPT be guaranteed?
A No. OpenAI states directly in its documentation that there is no way to guarantee top placement. Navirang does not guarantee it either, and if an agency does, ask how that squares with OpenAI's own sentence.
Q Is llms.txt required?
A It is not. Google has stated it does not use llms.txt in search, and OpenAI's documentation does not mention it as a visibility condition. Our position is to keep it as an optional file that costs almost nothing; the reasoning is set out in the llms.txt article.
Q Does structured data help visibility in ChatGPT?
A There is no guaranteed effect. OpenAI's documentation does not mention structured data as a visibility factor. But pinning facts such as company name, services and contact details into machine-readable form can help an engine grasp brand information accurately, so we use it as a supporting measure. Anywhere selling schema as an all-purpose visibility device should be filtered out.
Q How do we check whether our company is found in ChatGPT?
A Settle a question set a customer would plausibly ask, run it repeatedly in ChatGPT, and record brand mentions and citations of your domain separately. A single result is one sample, so repetition is necessary. Metric definitions and measurement design are in the AI visibility measurement article, and Navirang's free audit also checks your actual visibility for the main questions.
If you need this done rather than read
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Related reading
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