How to get cited by ChatGPT (and by Gemini, Perplexity and Copilot)

This guide covers the ChatGPT side of answer engine optimization (AEO), also called GEO (generative engine optimization) or AI SEO: getting a brand named, and its pages linked, in the answers AI assistants write. It is not about writing content with ChatGPT. It is for marketing managers and agency owners who need to know what is proven, what is a fair bet, and what nobody can honestly sell them.

What does OpenAI say about appearing in ChatGPT?

OpenAI publishes little on how ChatGPT picks sources, but four statements are precise.

Three consequences follow. Access is the only documented condition: a site that blocks OAI-SearchBot is not shown in ChatGPT search answers, apart from bare navigational links. No list of ranking factors exists for ChatGPT web search, so anyone selling “the ChatGPT algorithm” is guessing. And there is no paid route into the answer: ChatGPT ads, announced in January 2026 as a United States test, sit beside it, labelled.

OpenAI also separates its crawlers. Training uses GPTBot, and each setting is independent: you can allow OAI-SearchBot and block GPTBot. ChatGPT-User, which fetches pages for actions a user starts in ChatGPT, is not used to decide what appears in search.

How does ChatGPT choose the sources it cites?

OpenAI says ChatGPT search “typically rewrites your query into one or more targeted queries” and sends them to partner search providers. The only provider linked on that page is Microsoft, through its privacy statement. OpenAI never writes the word Bing, so “ChatGPT uses Bing” is a likely inference, not a fact. OpenAI also runs its own crawler and receives content directly from publishing partners. The rewritten searches can be observed, and they show which pages ChatGPT is likely to read.

Three lessons follow from that sample. ChatGPT favours vendor pages, official documentation and self-published “best of” lists over social platforms. It often searches in English even when the question is not, so an English page about your offer gives it something to find. And it reuses names it already knows: for “best AEO tool”, it wrote Profound, Peec AI, Otterly AI and Scrunch into its own search query. A brand missing from the pages about its category starts behind.

How do you get cited by ChatGPT in 8 steps?

1. Let OAI-SearchBot reach every public page

   Documented (OpenAI). Look in robots.txt for a rule that blocks OAI-SearchBot, or a wildcard that catches it. Then check the layer people forget: a CDN or firewall that answers OpenAI's crawler with a 403 or a challenge page. OpenAI publishes the crawler's IP ranges at openai.com/searchbot.json so your host can allow them, and says a robots.txt change takes about 24 hours to be applied.

2. Keep pages indexable and readable without JavaScript

   Documented (OpenAI for directives, Microsoft for rendering). OpenAI notes that its crawler can only read a noindex tag on a page it may crawl, so check noindex and nosnippet on the pages you want quoted. Bing's guidelines warn against “hiding critical content behind client-side rendering”. OpenAI says nothing about JavaScript, so open the page with scripts switched off: what you see is the safe minimum.

3. Get your pages into Bing as well as Google

   Heuristic for ChatGPT, documented for Copilot (Microsoft). Microsoft is OpenAI's only linked search partner, and Copilot runs on the same foundation as Bing search. Bing's index is the best available proxy for being findable by ChatGPT, not a proven condition. Submit a sitemap with accurate lastmod dates, announce changed URLs with IndexNow, and verify the site in Bing Webmaster Tools, whose AI Performance report counts citations in Copilot (not ChatGPT).

4. Write one page per buyer question, answer first

   Documented (Microsoft), heuristic for ChatGPT. Bing says pages focused on one primary topic “are more likely to be selected for grounding results”, with essential information near the top. Apply it to what buyers type: “best GEO agency in Belgium”, “AI visibility tool pricing”, “X versus Y”. Answer in two sentences, then give detail, a table where options compare, and the update date. A page that only says “contact us” gives an assistant nothing to quote.

5. Make your brand easy to describe correctly

   Documented (Microsoft and Google, for structured data), heuristic for ChatGPT. Use one name for the company, each product and each place, everywhere. State facts plainly: what you sell, to whom, where, since when. Add structured data that matches the visible text, as Google and Microsoft ask. Microsoft adds that markup “does not guarantee visibility”, and OpenAI has published nothing on schema.org for ChatGPT search.

6. Get named on the pages ChatGPT already cites

   Heuristic, based on observed answers. Ask ChatGPT your buyers' questions and read its sources. For category questions these are often comparison lists published by agencies or software vendors, directories and vendor pages. Get listed where a submission form exists, offer data or a useful comparison to list authors, and have outdated descriptions of your brand corrected. Mark paid placements as sponsored: Microsoft lists link schemes as abuse.

7. Publish in English too, and say where you work

   Heuristic for language, documented (OpenAI) for location. In our sample ChatGPT searched in English for French and Dutch questions, so a European brand with no English page about its offer is harder to find. OpenAI says ChatGPT uses an approximate location from the user's IP address for local results, with third-party business listings. Name your cities and countries, and keep those listings current.

8. Measure, then repeat on a schedule

   Documented (OpenAI) for the signals, heuristic for the method. OpenAI's crawlers identify themselves and publish IP ranges, so server logs show OAI-SearchBot visits and the pages ChatGPT-User fetches for live questions. OpenAI's publishers FAQ stated that ChatGPT adds utm_source=chatgpt.com to referral links, and 121 of the 183 source links ChatGPT returned in our 10 November 2026 collection carried it. For citations, ask a fixed set of questions on a schedule, by country and language.

What does not help, or can hurt?

All six points are documented by Microsoft or OpenAI.

• Buying ads to get into the answer. OpenAI says ads are separate and do not influence answers, and that shopping results are “not ads, nor influenced by any OpenAI partnerships”.
• Hidden text aimed at language models. Microsoft lists “prompt injection and AI manipulation” as abuse that can remove a site from its search experiences.
• Showing AI crawlers different content from what people see. That is cloaking, which Microsoft calls manipulative.
• Mass-produced pages nobody edits. Microsoft says large-scale content generated without oversight “may be excluded from indexing”.
• Relying on llms.txt or schema.org alone. No OpenAI page we read on 31 October 2026 names either as an input for ChatGPT search.
• Blocking every AI crawler, then expecting citations. Blocking GPTBot is a training choice. Blocking OAI-SearchBot takes you out of ChatGPT search answers.

Does the same work for Gemini, Perplexity, Copilot and Claude?

Mostly, with a different crawler for each engine. Their sources differ too: in our 10 November 2026 sample, the domains two engines cited for the same question barely overlapped (average Jaccard index of 0.08 over 154 pairs of engines). Working on ChatGPT alone leaves the other engines to competitors.

Sources: Google, AI features and your website (read on 31 October 2026), Google Search Central blog (30 October 2026), Bing Webmaster Guidelines (read on 31 October 2026), Perplexity crawlers (read on 31 October 2026), Anthropic crawler help (7 April 2026). The complete AEO guide goes engine by engine, and AEO vs GEO vs SEO explains the terms.

How do you know whether ChatGPT cites you?

Ask it, but not once. Answers change with the day, the country, the language and the wording. On “best AEO agency”, the only agency named by all four engines we measured (ChatGPT, Gemini, Google AI Mode and AI Overviews) on 31 October 2026 was named by two on 10 November. One screenshot proves very little.

A sound measurement asks a fixed list of buyer questions repeatedly in each market and language, records the brands named and the pages cited, and compares the same questions over time. That gives a mention rate per engine and the sites cited when a competitor is named and you are not, which is where step 6 starts.

GeckoBoost does this every day for ChatGPT, Gemini, Google AI Overviews, Google AI Mode, Perplexity, Microsoft Copilot and Claude, depending on the plan and its options. Each week it checks your site for the conditions above (search and AI crawlers in robots.txt, a firewall turning bots away, noindex, text without JavaScript) and asks ChatGPT about your domain to see whether it cites the site. On the Pro and Agency plans, it also checks on Bing the searches the assistants ran. Each failed check becomes an action in your plan. See the AI visibility tool and its plans, with a 14-day free trial.

How long does it take to appear in ChatGPT?

Nobody can give you a date, and OpenAI publishes none. The only documented delay is about 24 hours for a robots.txt change. After that (this part is heuristic), a new page must be found by the crawler or a search provider, and mentions on other sites move at their authors' pace. Plan in months, measure weekly, and compare with questions you did not work on, because answers also move on their own.

Should you do it yourself or hire an agency?

Steps 1 to 3 are a technical check a developer can run in a day. Steps 4, 5 and 7 are editorial work a marketing team can own. Step 6 takes time and contacts, and step 8 needs a tool. To have it done, our AEO services start with an AI visibility audit, priced on quotation. For actions beyond ChatGPT, read how to boost your AEO.