How to get cited by ChatGPT: what is documented and what is not

By Michael Nefedov, noetio · Updated 21 October 2026

To get cited by ChatGPT, let OpenAI's search crawler read your site, then publish pages with clear answers and facts a source can quote. Nobody can promise a citation.

Short answer

  • Documented: OAI-SearchBot finds sites for ChatGPT search. Sites that opt out will not appear in its answers.
  • Not documented: any ranking formula. OpenAI does not say how it picks sources.
  • The GEO paper saw sources, quotes and statistics raise visibility in its tests. That is not proof for your site.

What OpenAI documents

OpenAI documents four agents, and only OAI-SearchBot decides if you appear in ChatGPT search. Source: OpenAI's “Overview of OpenAI Crawlers” (no date on the page, read 21 October 2026), the first-party source we use here.

AgentWhat OpenAI says
OAI-SearchBot“OAI-SearchBot is used to surface websites in search results in ChatGPT's search features.” Sites that opt out will not appear in ChatGPT search answers, but can still show up as navigational links.
OAI-AdsBotValidates the safety of pages submitted as ads on ChatGPT. OpenAI says it only visits pages submitted as ads, and its data is not used to train generative AI foundation models. It is not about organic citations. See OpenAI's ads docs.
GPTBotCrawls content that may be used for training. Disallowing it means content should not be used in training foundation models.
ChatGPT-UserVisits pages when a user asks. It is not used to crawl automatically, and OpenAI says robots.txt rules may not apply because the user starts the action.
OpenAI crawler documentation: each setting is independent, search results can take about 24 hours to adjust after a robots.txt update, and sites opted out of OAI-SearchBot will not be shown in ChatGPT search answers though can still appear as navigational links
The OAI-SearchBot entry and the intro text we quote. Source: OpenAI, Overview of OpenAI Crawlers, captured 21 October 2026. Open full size.

More facts from that page:

  • The OAI-SearchBot and GPTBot settings are independent.
  • Search results can take about 24 hours to adjust after a robots.txt change.
  • OpenAI recommends two things to appear in search results: allow OAI-SearchBot in robots.txt, and allow requests from its published IP ranges (list at openai.com/searchbot.json).
  • The page does not mention Bing (we searched its text on 21 October 2026), so we make no Bing claim.

What studies say gets cited

Two studies show that cited sources shift fast and that some rewrites raised visibility in tests.

~60% → ~10%

ChatGPT answers citing Reddit, early August to mid-September 2025. Semrush says "close to 60%" fell to "around 10%". Wikipedia fell from roughly 55% to under 20%. Sources move fast.

Semrush, “The Most-Cited Domains in AI: A 3-Month Study”, 10 November 2025: more than 230,000 prompts, 13 weeks. Source

up to 40%

the most visibility gained in the GEO paper's benchmark (GEO-bench, 10,000 queries), with methods such as adding sources, quotes and statistics. On Perplexity.ai the paper reports gains of up to 37%. The tests used GPT-3.5 turbo and Perplexity.ai, not ChatGPT search.

Aggarwal et al., “GEO: Generative Engine Optimization”, arXiv:2311.09735, first posted 16 November 2023, last revised 28 June 2024. Source

Semrush line chart of the percent of AI responses with a Reddit citation, July to October 2025: ChatGPT starts near 52 percent, peaks near 62 percent in late July, falls to about 10 percent by mid-September; AI Mode and Perplexity stay between about 7 and 13 percent. Text below: ChatGPT cited Reddit in close to 60 percent of prompt responses in early August before collapsing to around 10 percent by mid-September
Semrush's own chart for Reddit. Source: Semrush, “The Most-Cited Domains in AI: A 3-Month Study”, 10 November 2025, captured 21 October 2026. Open full size.

Semrush says that after mid-September, Reddit and Wikipedia came closer to the other top ChatGPT sources, which include Medium, Forbes and LinkedIn. It also says Reddit and Wikipedia were still ChatGPT's two most-cited domains. The mix moved within weeks. Details are in SEO vs GEO.

Semrush study methodology: more than 230,000 prompts over 13 weeks across three LLMs; 230K prompts across ChatGPT search, Google AI Mode and Perplexity; weekly snapshots between 14 July 2025 and 12 October 2025; top 25 domains each week; over 100M AI citations
How big the Semrush study was. Source: same Semrush study, captured 21 October 2026. Open full size.
arXiv abstract page for GEO: Generative Engine Optimization, submitted 16 November 2023, last revised 28 June 2024, stating that GEO can boost visibility by up to 40 percent in generative engine responses
The GEO paper abstract: “GEO can boost visibility by up to 40% in generative engine responses”. Source: arXiv:2311.09735, captured 21 October 2026. Open full size.

A 7-step plan

Seven steps that remove blockers and make your pages easy to quote. None is guaranteed.

  1. Check robots.txt. Run curl -s https://yoursite.com/robots.txt. You should not see a Disallow: / under User-agent: OAI-SearchBot or under User-agent: *. Also check your CDN or firewall does not block the bot. Copy-paste rules are in the GPTBot guide.
  2. Make sure the page loads without JavaScript. Run curl -s https://yoursite.com/page | grep -i "your key sentence". If the sentence is missing, a crawler that does not run scripts may not see it. OpenAI's bots page does not say whether its crawler runs JavaScript.
  3. Pick one question per page. Put the direct answer in the first 100 words. Use the question as the H1.
  4. Add facts that can be quoted. Numbers, dates, prices, with a link to the source. The GEO paper found citing sources, quotes and statistics worked best, in its own test setup (arXiv:2311.09735).
  5. Get mentioned elsewhere. The Semrush study saw Reddit, LinkedIn and similar sites cited often. Honest answers on Reddit, a LinkedIn post or a guest article may help. This is not proven to work for you. Do not fake accounts or reviews.
  6. Keep Google indexing healthy. This is the base for everything. See how to get your website on Google.
  7. Measure. Our method, not from OpenAI: write a list of questions a buyer would ask. Ask each one several times in ChatGPT with search on, in fresh chats. Count how many answers name you. Repeat on a schedule. One answer is one sample.

Did the bot visit? Check your logs

Search your logs for the bot name to see if OpenAI's search crawler reached you at all. The AI crawlers guide has a command for all bots.

grep -i "OAI-SearchBot" access.log | tail -20
  • No hits: this does not prove you are blocked. Logs may be short or the bot may not have come yet.
  • Hits with 403 or 429: something at your firewall is refusing it. Check your host and CDN bot settings too.
  • Hits with 200: a visit does not mean a citation. It means you are eligible to be found.

What the studies cannot tell you

Neither study shows that adding statistics will get your page cited by ChatGPT today. Use them to decide what to try, and your own question test to see if it worked.

  • The Semrush study shows which domains ChatGPT cites. Its Sergei Rogulin says: “I believe the main reason for the drop is an attempt to avoid over-citing on certain websites”. That is his belief, not a documented OpenAI reason.
  • The GEO paper (arXiv, first posted November 2023) tested page rewrites in its own benchmark and on Perplexity.ai.

What to skip

Skip anything that promises a citation; no documented mechanism guarantees one.

llms.txt promises

OpenAI's bots page does not say ChatGPT search reads it. Google's AI optimization guide (last updated 2026-07-10) says creating llms.txt files “will neither harm nor help your site's visibility or rankings in Google Search, as Google Search ignores them”. Do not pay for it as a fix. See our llms.txt guide.

Guaranteed citation services

No documented mechanism exists to guarantee one.

Keyword stuffing

The GEO paper found “little to no improvement” from it (arXiv:2311.09735).

One-off tests

One answer is one sample. Ask more than once before you decide a change worked.

Check before you act

Four yes/no checks before you change anything.

Google's guide to optimizing for generative AI features: LLMS.txt files and other special markup are not needed to appear in Google Search; creating llms.txt files will neither harm nor help your site's visibility or rankings in Google Search, as Google Search ignores them
What Google says about llms.txt. Source: Google Search Central, Optimizing for generative AI features on Google Search, last updated 2026-07-10, captured 21 October 2026. Open full size.
  1. 1Is OAI-SearchBot allowed in robots.txt and at your CDN?
  2. 2Does each key page show its answer in the HTML?
  3. 3Does every number on the page link to a source?
  4. 4Do you have a list of test questions and a baseline count?

Tools that run these tests for you are covered in LLM SEO tools. If you use ChatGPT to write the pages, read ChatGPT for SEO first.

Sources

All read on 21 October 2026.

  1. OpenAI, Overview of OpenAI Crawlers, developers.openai.com/api/docs/bots (no date on the page). Used for the four agents, the 24-hour note, the IP-range advice.
  2. OpenAI, Ads documentation, developers.openai.com/ads. Used only to show that ads are a separate, paid product.
  3. OpenAI, OAI-SearchBot IP list, openai.com/searchbot.json (HTTP 200 on 21 October 2026).
  4. Semrush (Luke Harsel), The Most-Cited Domains in AI: A 3-Month Study, 10 November 2025. More than 230,000 prompts, ChatGPT search, Google AI Mode and Perplexity, weekly snapshots 14 July to 12 October 2025.
  5. Aggarwal, Murahari, Rajpurohit, Kalyan, Narasimhan, Deshpande, GEO: Generative Engine Optimization, arXiv:2311.09735, first posted 16 November 2023, last revised 28 June 2024.
  6. Google Search Central, Optimizing for generative AI features on Google Search, last updated 2026-07-10.

Questions

OpenAI's bots page does not describe a way to buy a citation in ChatGPT's search answers. OpenAI does document ads in ChatGPT: its OAI-AdsBot visits pages that are submitted as ads. An ad is a paid placement, not an organic citation. Be careful with anyone who sells guaranteed citations.

No. OpenAI says the two settings are independent. Details are in the GPTBot vs OAI-SearchBot guide.

OpenAI gives about 24 hours for a robots.txt change to reach search results. It gives no time for how fast new content gets cited.

No. They overlap, but the sources differ and move fast. The SEO vs GEO guide has the data.

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Written by Michael Nefedov, founder of noetio. Updated 21 October 2026.