AI Citation Source & Gap Finder
See the third-party sources AI engines cite for your category, and which ones mention competitors but not you (your outreach targets). Free on Google Gemini.
AI Citation Gap Finder for the competitor who keeps showing up instead of you
Your client ranks top-3 in Google for the exact query, and a smaller competitor still keeps turning up in ChatGPT's answer instead of them. That's not a content problem yet — it might not be a content problem at all. We show you which domains are actually being cited for your topic, and walk you through the four gates a page has to clear before citation is even possible. Gate one is simple access, and most 'no citations' cases never get past it.
Built and reviewed by Sayed Hasan, founder of SEOs Hut · Updated 28 September 2026 · Free, no signup
How to check AI citations?
Run your target query against the engine and read the cited source list, not just the answer text — on Perplexity that's the search_results field, on Gemini it's the url_citation annotations, and on Bing it's the AI Performance report in Bing Webmaster Tools. A brand can also be recommended from a model's own memory with zero citations attached, so 'not cited' and 'not visible' are different findings.
Zero citations is not a content verdict
Citation is the last of four gates, not the first thing to fix. A page has to be reachable by the answer-time fetcher, present in the index that engine actually queries, retrieved for that specific prompt, and only then cited. Most 'why doesn't my client get cited' cases fail at gate one or two — access or indexing — where no amount of rewriting the page changes anything. Work the gates in order before you touch a word of content.
Four gates a page has to clear, in the order that actually matters
Start at gate one. Each verdict tells you the cheap check to run before you reach for the expensive fix.
Can the answer-time fetcher actually reach the page?
Are you in the index that this engine actually queries?
Were you retrieved for this specific prompt?
Were you actually cited in the visible answer?
Source selection: documented versus observable
Don't take our word for what each engine does — this is only what each one has put in writing, and separately, what you can actually see as an outsider.
| Engine | What it publishes about source selection | Fan-out / rewrite documented? | What you can actually observe |
|---|---|---|---|
| Indexed + snippet-eligible in ordinary Search, no extra technical work required | Yes, with a published worked example | Impressions only, via Search Console's Generative AI report — no query dimension | |
| ChatGPT (OpenAI) | "Ranks by multiple factors… placement is not guaranteed" | Yes — rewrites into queries sent to named search partners (Microsoft, Shopify) | Not exposed anywhere in the product or API; the UTM tag on the referral link is the only receipt |
| Perplexity | Rates the whole domain, not the page, with three labels (Government, Academic, Trusted) | Not documented | search_results field in the API is the documented source of truth; inline markers are not guaranteed |
| Bing / Copilot | No published statement on how sources are ranked or weighted | Not documented | AI Performance report gives Total Citations and a sample of grounding queries — explicitly not placement data |
| Gemini | No published ranking statement | google_search_call exposes the queries actually executed | url_citation annotations give url, title and the exact text span — the most observable engine of the five |
Scroll the table sideways to see every column.
Rows marked u aren't a knock on the engine — it's what has and hasn't been published, and we're not going to guess at the rest.
Five words this topic keeps blurring together
- Mention
- Your brand named in the answer text. Doesn't require a link, a footnote, or a retrieved source at all.
- Citation
- A source explicitly attached to a claim — sometimes a visible footnote, sometimes only present in structured data like Perplexity's search_results or Gemini's url_citation.
- Source label
- Perplexity's domain-level rating (Government, Academic, Trusted, or no label). Applied to the whole site, not the page, and Perplexity states a business relationship does not affect it.
- Recommendation
- A brand named from the model's training memory, with no retrieval and therefore no citation possible. Distinguishable from a grounded answer only by the absence of any source list.
- Grounding
- When an answer is built from a live retrieval step rather than memory. Retrieval, not writing quality, is the thing citation actually measures.
There's no content trick that substitutes for gate one
“ChatGPT ranks search results using multiple factors intended to help users find relevant, reliable information. Placement is not guaranteed. To make a website eligible for inclusion, allow OAI-Searchbot to crawl the site and confirm that the website host or content delivery network allows traffic from OpenAI's published searchbot IP addresses.”
<b>OpenAI, ChatGPT Search help documentation</b> — OpenAI Help Center
Retrieval, not prose quality, is what citation is measuring
Two facts change how you should read a 'no citations' result, and neither is about how the page is written.
The first is that fan-out is real and documented, on both Google and OpenAI. Google's own example expands 'how to fix a lawn that's full of weeds' into 'best herbicides for lawns', 'remove weeds without chemicals' and 'how to prevent weeds in lawn' — three retrieval events from one seed question. OpenAI documents the same mechanism, rewriting your prompt into one or more targeted queries sent to search partners it names as Microsoft and Shopify, and confirms that a user's stored memory changes the rewrite. Your page might answer the seed question well and still miss every one of the rewritten sub-queries actually being retrieved against.
The second is that citation trackers only ever measure the grounded, web-search slice of an answer. A brand's share of voice can be built entirely from mentions with zero attached citations, because the model already knows the brand from training. If your citation count reads zero but the brand still gets named in the answer, that's a real result, not a broken test — it's telling you the gap sits in a different place than you assumed.
Where the gate diagnosis goes wrong
Each of these skips a gate instead of working through it in order.
Rewriting the page before checking crawler access
What happens: A page blocked at the fetcher never gets read no matter how it's restructured — the edit changes nothing and burns a week proving it.
Do this instead: Check answer-time fetcher access first. It's a five-minute log check against a two-week content sprint.
Treating a citation count as a ranking
What happens: Bing states outright that its Total Citations figure doesn't indicate placement, ranking or authority within an answer. Reading it as a leaderboard position is reading data the publisher told you not to read that way.
Do this instead: Use citation counts to confirm you're in the running at all, not to rank yourself against the competitor.
Giving up after one snapshot
What happens: Retrieved-source sets change between identical runs of the same query — a single check that shows you missing proves nothing about tomorrow's answer.
Do this instead: Check the same query more than once, over time, before concluding you're structurally excluded.
Chasing citations on a topic nobody searches for in prompt form
What happens: A gap on a query nobody actually types into an AI assistant is not a gap worth closing.
Do this instead: Confirm the query is one buyers actually ask before you spend a sprint chasing it.
Assuming the cited competitor paid for placement
What happens: None of the five engines above publish a pay-for-citation mechanism, and assuming one exists sends the investigation in the wrong direction entirely.
Do this instead: Work the four gates instead. The answer is almost always access, indexing or retrieval — not a payment you can't see.
What to actually check this afternoon
Start at gate one: pull your access logs and confirm the answer-time fetchers — not the training crawlers — are getting a 200. If they are, confirm you're genuinely indexed and snippet-eligible for the exact query in plain Google search. Only once both of those are clean does a content rewrite make sense. And while you're auditing sources, the domains being cited instead of you are also your highest-value outreach list — you're looking at them in two systems at once. If your own page might simply not be quotable once it is retrieved, check that separately — and for a local query specifically, the cited sources are very often directories you're just not listed in, which is a same-week fix.
AI Citation Gap Finder FAQ
Is there an AI that can find citations?
How to improve AI citations?
How to get cited in AI search results?
Why don't ChatGPTs cite their sources?
What counts as an AI mention vs an AI citation?
Does zero citations mean my content is bad?
Can a competitor pay to be cited more often?
Primary sources used on this page
- Google: eligibility rule and confirmation that no extra technical work is required — developers.google.com
- Google: query fan-out, defined and shown with a worked example — developers.google.com
- OpenAI: ChatGPT's ranking factors, placement not guaranteed, and the crawl/IP eligibility rule — help.openai.com
- OpenAI: publisher referral tagging and the GPTBot training opt-out, kept separate from search access — help.openai.com
- Perplexity: domain-level source labels and what they don't mean — www.perplexity.ai
- Perplexity: inline citation markers are prompt-dependent; search_results is the source of truth — docs.perplexity.ai
- Microsoft: the Bing Webmaster Tools AI Performance report, and its documented limits — blogs.bing.com
- Google: Gemini API's observable url_citation annotations and google_search_call queries — ai.google.dev
Work the gate you're actually stuck at
A citation gap is rarely one problem. These six cover the gates and the adjacent systems worth checking before you touch the page.
Read the guide: Local SEO Citations: What They Are and How to Build Them and Directory Listings and SEO: Do They Still Help?. Want it handled for you? See our AI SEO (GEO) services.