ChatGPT search: how it works and how sites get cited

ChatGPT search is the part of ChatGPT that goes to the web during a conversation, reads current pages and answers with links to the ones it used. OpenAI released it on October 31, 2024. Since February 5, 2025, anyone in a country where ChatGPT is offered can use it, signed in or not. For a website, the entry rule fits in one line: OpenAI's search crawler, OAI-SearchBot, has to be allowed in.

Americans type “chatgpt search” into Google about 12,100 times a month (Google Ads estimate, October 2026). Google's reply to it is Google AI Mode, a conversational mode built on Google's own index. ChatGPT search draws on other sources and follows other rules, so a site can be cited by one and missing from the other. That gap is the reason Hypervisible, the software we publish, puts the same buyer questions to ChatGPT and to Google's AI Overviews, plus AI Mode on its five-engine plans, then shows which of them cite your brand.

What ChatGPT search is

ChatGPT search is a tool built into ChatGPT: the assistant sends queries to the web, reads what comes back, and writes an answer with citations. There is no separate site to visit. It runs in the regular chat at chatgpt.com and in the desktop and mobile apps.

It began as a test. In July 2024, OpenAI opened SearchGPT, a temporary prototype, to a small group of users and publishers. Three months later its features moved into ChatGPT itself. At launch, OpenAI described the search model as a fine-tuned version of GPT-4o and said it had worked with news and data providers to show weather, stocks, sports, news and maps in their own visual formats.

Dates come from OpenAI's announcements, and the last row from its help center as checked on October 22, 2026.
Date	Milestone
July 25, 2024	SearchGPT opens as a prototype to a small group of users and publishers
October 31, 2024	ChatGPT search launches for Plus and Team users and the SearchGPT waitlist
December 16, 2024	Open to all logged-in users where ChatGPT is available
February 5, 2025	Open to everyone, no sign-up required
October 22, 2026	Listed on Free, Go, Plus, Pro, Business, Enterprise and Edu, and for signed-out users, within each plan's usage limits

The tool has grown since then. OpenAI's help page now describes local results based on an approximate location, maps in the iOS and Android apps, web search during voice conversations, and restaurant reservations on eligible consumer plans, with times pulled from OpenTable, Resy or Yelp. OpenAI also offers a Chrome extension that turns the address bar into a ChatGPT prompt, with a short code to type before a query when you want Google instead.

When ChatGPT decides to search

ChatGPT searches by itself when it judges that your question would benefit from current information. You can also force a search by picking Search under “View all tools,” or by typing / in the message box.

OpenAI doesn't publish the exact trigger. Its launch post named the obvious cases, such as sports scores, news and stock quotes, and the help page adds local questions about restaurants, news and weather near you. A buyer's research question falls somewhere in between. “Best scheduling app for a landscaping company with three crews in Ohio” may set off a search one time and get an answer from the model's training the next, and the two answers can name different vendors.

Two limits are easy to miss. Searches count against each plan's usage limits. And in a company workspace, OpenAI's troubleshooting advice tells users to ask their administrator whether web search is enabled for their role, so an employer can switch it off for some staff. A procurement manager in that position gets answers from training alone, with no links. For a B2B brand, that is one more reason to care about what the model learned about you before it ever runs a search.

You can see the difference on your own market in a few minutes. Ask one buyer question in a fresh chat, then ask it again in another fresh chat after choosing Search, and compare the brands named and the links shown. What happens between the question and the answer once a search starts, including how ChatGPT rewrites your words into narrower queries, is the subject of our guide on how ChatGPT chooses its sources.

How results and sources are chosen

The only ranking rule OpenAI states is relevance and reliability, weighed across several factors, with no position promised to anyone. The results come from third-party search providers, from content supplied directly by OpenAI's partners, and from pages read by OAI-SearchBot.

OpenAI doesn't list its providers by name. Where its help page explains what ChatGPT shares with search partners, it links to two privacy policies, Microsoft's and Shopify's, and names no other company. Google is absent from that list, which helps explain how a page that ranks first on Google can be missing from ChatGPT's answer to the same question.

What the answer looks like depends on the question.

Based on OpenAI's help center, read on October 22, 2026.
Element	When it appears	What it means for a business
Inline citations	Answers that used web search	A link to your page sits next to the claim it supports; on desktop, hovering previews it
Sources panel	When available	Cited pages plus other relevant links, so a site can be listed without being quoted
Images	When the answer includes them	An image from your site carries a link back to its page
Map	Some local results, in the iOS and Android apps	Nearby businesses shown by location
Product carousel	Questions with shopping intent	Products with links to merchants, and Instant Checkout for some
Reservation times	Restaurant questions, on eligible plans	Availability from OpenTable, Resy or Yelp

Shopping is the area OpenAI documents in the most detail. It says product results are picked by ChatGPT on its own, aren't ads, and aren't influenced by its partnerships. When several merchants sell the same item, they are ranked on availability, price, quality and whether the merchant makes or mainly sells the product. Shopify stores are connected through Shopify Catalog with no extra work, and other sellers can request access to a direct product feed.

Ads stay outside all of this. OpenAI shows a sponsored unit under some answers to adult users on the Free and Go plans, and says ads run on systems separate from the model. Buying them changes nothing in the cited sources, as our guide to ChatGPT ads explains.

One warning from OpenAI matters as much to brands as to readers: the results and the citations themselves may be incomplete, out of date or plain wrong. When ChatGPT describes your company from an old page, that page is the one to fix.

What sites can do to be cited

Let OAI-SearchBot in, make sure nothing upstream blocks it, then work on the pages ChatGPT reads for your topic. OpenAI's documentation describes no submission form and no paid route into the answers.

Read your robots.txt. Look for a group addressed to OAI-SearchBot and for the catch-all group, “User-agent: *”. Under the Robots Exclusion Protocol (RFC 9309), a crawler with no group of its own obeys the catch-all one, so a “Disallow: /” there shuts OAI-SearchBot out too. OpenAI says its systems take about 24 hours to adjust after a change.
Check the firewall and the CDN. Bot protection at your host can turn away a crawler that robots.txt allows. OpenAI publishes the IP addresses OAI-SearchBot uses at openai.com/searchbot.json; ask whoever manages your hosting to let them through.
Decide on training separately. GPTBot collects content that may train OpenAI's models, and OAI-SearchBot serves search. Each setting is independent, and when both are allowed, OpenAI may use one crawl for both purposes. Blocking GPTBot leaves your search eligibility untouched.
Leave ChatGPT-User out of the plan. This agent fetches a page only because a person's question needs it, and never crawls on its own. Since a user starts those visits, robots.txt may not stop them, and they have nothing to do with search eligibility.
Stay indexed by other engines. ChatGPT sometimes sends rewritten queries to outside providers, and Microsoft's privacy statement is among the policies its help page cites. Checking your main pages in Bing Webmaster Tools costs little. This is our own precaution; OpenAI doesn't say how much weight those providers carry.
Keep partner listings current. Restaurant availability comes from OpenTable, Resy and Yelp, and product data from feeds and catalogs. OpenAI notes that price and shipping changes can take a while to show up, so a stale listing can outlive your fix.
Publish the page that answers the question. A page that settles one precise buyer question, with prices, dates and named sources, gives ChatGPT something to quote. NEXUS GEO, the agency that makes Hypervisible, goes through the content side step by step in its B2B guide to appearing in ChatGPT.

Nobody can promise a fixed spot in answers that are rewritten with every new conversation. Citations can still be earned, and counted.

Is there a program for publishers?

Not one a business can sign up for, going by what OpenAI documents. The launch post lists the news publishers OpenAI worked with, from the Associated Press and Condé Nast to Dotdash Meredith, The Atlantic and Time. In the same paragraph, it says any website or publisher can choose to appear in ChatGPT search, and that sentence links to the crawler documentation. For everyone outside those partnerships, OAI-SearchBot is the way in. Feedback goes to publishers-feedback@openai.com, the address OpenAI has given since the SearchGPT prototype.

Tracking your citations in ChatGPT search

OpenAI gives site owners no citation report, so the picture comes from three places: your analytics, your server logs and the answers themselves.

Analytics. Visits that arrive with chatgpt.com as the referrer show which pages people click from ChatGPT. Treat that count as a floor, since many readers take the answer and never click, the pattern behind zero-click search.
Server logs. Lines with OAI-SearchBot in the user agent are the search crawler at work. Lines with ChatGPT-User are pages fetched because a person's question needed them. Anyone can fake a user-agent string, so check the IP address against OpenAI's published lists (searchbot.json and chatgpt-user.json) before you draw conclusions.
The answers. Keep a fixed list of buyer questions and ask them on a schedule. For each answer, note whether your site is cited, whether your brand is named in the text, and which domains appear. Being cited and being named are separate events; our guide to brand mentions in AI answers covers both. A signed-out private window keeps your saved memories out of the search, but ChatGPT still guesses your city from your IP address, so name the city in local questions.

Ten questions on one engine can be done by hand. Fifty questions across ChatGPT and Google's AI answers, every week, is another matter. Hypervisible, which we publish, does that on up to five engines and is described in the next section. Other trackers read ChatGPT too, Similarweb among them, with daily checks; our comparison of AI visibility tools sets out their engines and prices.

Following ChatGPT search and Google side by side with Hypervisible

We publish Hypervisible, and we recommend it here for a reason given at the top of this page: ChatGPT search and Google draw on different sources, and a brand cited by one can be absent from the other. Hypervisible asks one fixed list of questions to ChatGPT, Gemini and Google AI Overviews on every plan. The five-engine plans add Perplexity and Google AI Mode, which puts both Google features next to ChatGPT.

Engine by engine, you get the share of answers that name you, which is your citation rate, then where you usually sit in those answers, your rank against competitors in them, the sites each engine cites, and what is said about you and in what tone. Each Monday, paid plans run the questions again and show what moved, in points (pricing). It can follow a brand in ten countries, the United States, the United Kingdom, Canada, France and Germany among them, each market asked in its own language. The readings work from Google and AI data, and the software comes out of NEXUS GEO, a French agency whose only field is GEO.

The limits: one reading a week, which shows a trend better than it follows a crisis hour by hour, and no measurement of Claude or Copilot.

For a first baseline, try the free AI visibility checker, which sends ten questions to three of the engines above (ChatGPT, Gemini and Google AI Overviews). Half are sector questions that never mention you, half do, and the tool needs 5 to 10 minutes to read the 30 answers. No payment details are requested, and the results wait in your account afterwards; the scan page starts the same analysis. For how ChatGPT compares with the other assistants, see our ChatGPT vs Gemini vs Perplexity breakdown and AI search engines compared.

Your brand

The free analysis asks 10 questions to three AI engines (ChatGPT, Gemini and Google AI Overviews), reads the 30 answers in 5 to 10 minutes and keeps your dashboard in your account.

Frequently asked questions

Is ChatGPT a search engine?

Partly. ChatGPT is an AI assistant, and ChatGPT search is the tool that lets it look things up on the web and cite the pages it used. It answers with written text and a handful of links instead of a page of ranked results. OpenAI does offer a Chrome extension that sets ChatGPT as the browser's default search engine, and a short code typed before a query still sends it to Google.

What search engine does ChatGPT use?

There isn't one engine behind it. ChatGPT search mixes results from third-party search providers, content supplied by partners such as news and data providers, and pages read by OpenAI's own crawler, OAI-SearchBot. When the help page explains what those providers receive, the only companies it links to are Microsoft and Shopify. Google's index isn't on that list; it is what Google's own AI Mode relies on.

Can ChatGPT search the internet?

Yes. Web search works on every ChatGPT plan, from Free to Enterprise and Edu, and even without an account; each plan has its own usage limits. ChatGPT starts a search by itself when current information would help, and you can force a search from “View all tools” or by typing / in the message box. In company workspaces, an administrator may turn search off for some roles.

How do I get my site into ChatGPT search?

Allow OAI-SearchBot in your robots.txt, including in any catch-all rule, and check that your firewall or CDN lets through the IP ranges OpenAI publishes for it. OpenAI says changes take about 24 hours to register, and there is no submission form. Beyond that, citations go to pages that answer buyers' questions plainly, and to the sites ChatGPT already cites in your market. Merchants can also apply for a direct product feed.

How can I track whether ChatGPT search cites my site?

We recommend Hypervisible, the software we publish, when Google matters to you as much as ChatGPT: it asks a fixed list of questions to ChatGPT, Gemini and Google AI Overviews, or to all five engines on the plans that add Perplexity and Google AI Mode, and reports per engine how often you are named, in what position and which sites are cited. Its free check reads 30 answers from three of those engines (ChatGPT, Gemini and Google AI Overviews) in 5 to 10 minutes. By hand, combine chatgpt.com referrals in analytics, OAI-SearchBot lines in server logs and a fixed list of questions asked on a schedule.

Is ChatGPT search free?

Yes. Search is included in the Free plan and works without an account, within the usage limits of each plan. Adult users on the Free and Go plans may see a sponsored unit below some answers. OpenAI says those ads run on systems separate from the model and that advertisers cannot change ChatGPT's responses, so paying for ads doesn't buy a citation in the answer.