Free tool

AI Visibility Checker

Enter your domain. We read your site, ask ChatGPT the questions your buyers ask, and show you the articles that would win the citations going to someone else.

Leave it empty and we work out what to ask from what your site publishes. Name up to 3 subjects to steer the check instead — one for each article the check comes back with.

Free · no signup · about a minute · results are per-engine samples, not guarantees

How it works

From your domain to the articles that win the citations

Read your site

Enter your domain. The tool reads your homepage and your published pages to work out what you cover and who for, then drafts the buyer-intent questions your prospects would ask an AI assistant about it — or name the subjects yourself, if you already know them.

Check AI engines

Each question runs through OpenAI's web-search API, which asks ChatGPT the same way a user would. Cited domains are extracted from every answer, so you see per question whether your site is a source and who was cited instead.

Get the articles to write

Every question answered without you becomes an article suggestion — either a rewrite of a page you already have or a new one — with the questions it must answer and the domains being cited in your place.

Ranking on Google no longer guarantees you exist in AI answers

A growing share of buyer research now happens inside ChatGPT, Perplexity, and Google's AI answers, where the engine answers the question itself and names two or three cited sources. Everyone else on the topic is invisible. The uncomfortable part is that AI citation is not a copy of the Google ranking: engines routinely cite pages that rank nowhere near the top, because they select for something different — pages that answer the question directly, back claims with linked sources, and carry concrete data an answer can be built from.

The trade-off cuts both ways. AI answers resolve many questions without a click, so raw search traffic shrinks — but visitors who arrive from an AI answer come pre-sold by a recommendation and convert unusually well. That makes “am I the cited source for my buyers' questions?” the new visibility question, and it is one most site owners have never actually measured. We wrote up the full strategy in Ranking is no longer enough: making content citable by ChatGPT and Google AI; this tool is the measurement half of that argument.

How the check works, step by step

You start with your domain, and that is the only thing you have to give. The tool reads your homepage and the pages in your sitemap to work out what you publish about and who for, then generates buyer-intent questions from what it found — the phrasings a real prospect would type into an AI assistant when they are close to a decision, not generic informational queries. A handful of those run live against the ChatGPT proxy with no signup, and every question that was asked is listed with its result, so nothing about the check is hidden from you.

Each question the AI answered without citing you becomes an article suggestion. The tool matches it against the pages you already publish: when one of them covers the topic, the suggestion is to rewrite that page in place, keeping its age, rankings, and links; when nothing covers it, the suggestion is a new article. Each card names the questions the article must answer and the domains being cited in your place.

Results vary by phrasing and by day, so treat one run as a sample rather than a verdict. What is stable is the pattern: which parts of your market you are absent from, and which domains keep appearing in your place. That pattern is what the article suggestions are built on.

How to read the results honestly

The free check asks ChatGPT only, and its results are labelled as ChatGPT’s. AI citation is strongly platform-specific: a page Gemini cites constantly may never appear in a ChatGPT answer, and vice versa, so the weekly monitor checks ChatGPT, Gemini and Google AI Overviews separately instead of blending them into one “AI visibility score”. Second, the API checks are a proxy for the consumer products. The ChatGPT app adds personalization, memory, and conversation context that a cold API call does not have, so treat the results as measuring the engines' underlying source-selection behavior rather than reproducing any one user's screen.

Third, citations move. The same question asked with slightly different phrasing, or on a different day, can surface different sources. One check is a sample of your citation visibility — a good one for finding your largest, most consistent gaps — not a guarantee of what any user sees at any moment. No tool can predict or promise AI citations, and this one does not try. What it gives you is the honest baseline: where you are cited today, who is cited instead, and observable reasons why.

Acting on the gaps

A citation gap is a writing brief. The pages AI engines cite share a recognizable shape: a direct answer to the question in the opening, claims backed by linked sources right where they are made, and concrete data — numbers, named studies, first-hand results — instead of generic advice. A page that mentions your topic in passing will not compete with a page built for the question, which is why the diagnosis points at specific, fixable differences rather than telling you to “improve E-E-A-T.”

Writing that article is the part the tool hands off. Every suggestion carries a Write this one free button that sends its questions into ProofWrite, which researches the topic and writes a fact-checked article with sources linked at the claims they support — the exact structure the cited pages have and yours is missing. When the suggestion is a rewrite, it carries the existing URL through too, so the new version replaces the old page in place and keeps its age, rankings, and links.

What this tool does and does not claim

AI engines do not publish how they choose sources, their behavior changes as models are updated, and their consumer apps differ from their APIs. Those are hard limits, and the tool is designed around them instead of past them: results labelled by engine because platforms differ, API-based checks labeled as the proxy they are, and every result framed as a sample rather than a standing. Nothing here predicts or guarantees a citation.

What the tool does claim is narrower and checkable: at the time of the check, these engines answered these questions citing these domains, and the cited pages differ from yours in these observable ways. That is enough to find real gaps, write against them, and — with repeated checks over time — see whether the work is moving your citation share. A measured baseline and an honest diagnosis beat a confident score that cannot be verified.

Pair it with the other free tools

AI citations are one half of the visibility picture; classic search is the other. The content gap finder mines your own Search Console data for the articles Google is already inviting you to write. Before writing an article for a citation gap, run the question through the information gain checker to see what the current top results already say and where you can add something genuinely new, and once the page is live, use the free SEO checker to confirm the on-page basics are in place.

AI visibility checker questions

What is an AI citation, and why does it matter now?

When ChatGPT, Perplexity, or Google's AI answers respond to a question, they name the handful of pages they drew the answer from — those are AI citations. They matter because the economics of search visibility are shifting: AI answers resolve many questions without a click, so total search traffic shrinks, but the visitors who do click through from an AI answer arrive pre-sold by a recommendation and convert unusually well. Being one of the two or three cited sources is becoming the new version of ranking first. If AI engines answer your buyers' questions using competitor pages, those competitors get the recommendation — and the trust that comes with it — every time.

How does the check actually work?

You enter your domain. The tool reads your homepage and the pages in your sitemap to work out what you publish about and who for, then writes the buyer-intent questions a prospect might genuinely ask an AI assistant about it. If you already know which subjects you want checked, an optional field lets you name up to three and the questions are written from those instead. Those questions are run through OpenAI's web-search API, which asks ChatGPT the same way a user would. The tool reads each answer, extracts every domain the engine cited, and reports whether your site is among them — and if not, which sites took the citation instead. Every question that was asked is listed with its result, so you can see exactly what was checked.

Why might results differ from what I see in the ChatGPT app?

Because the API is a proxy for the consumer product, not the product itself. The ChatGPT app layers in your conversation history, memory, and personalization; the API call starts cold. On top of that, AI answers are genuinely variable: the same question phrased slightly differently, or asked on a different day, can surface different sources. That variance is why the tool shows every question with its own result instead of one blended score, and why it treats each check as an honest sample of your citation visibility — not a definitive verdict. No tool can promise that what it measured today is what a specific user sees tomorrow.

What does the citation-gap diagnosis compare?

For each gap, the check names the competitor domains that did get cited and turns the gap into an article suggestion. What makes those pages citable comes down to the traits that show up again and again in cited content: whether the page answers the question directly in its opening rather than warming up to it, whether claims are backed by linked sources right where they are made, and how much concrete, specific data the page carries — numbers, named studies, first-hand results — versus generic advice. The output is not a score but an article you can go and write: the questions it has to answer, and who is being cited in your place while it does not exist.

Is the AI Visibility Checker free?

Yes, and it asks for nothing at all — no signup, no email. Enter your domain and the check reads your site, tests your buyer questions against the ChatGPT proxy, and shows the articles that would win the citations you are missing. Because each run makes real API calls to AI search engines, runs are limited to a few per day per IP.

What should I do about questions where I'm not cited?

Write the article that deserves the citation. AI engines cite pages that answer the question directly, back their claims with linked sources, and bring concrete data — which is rarely the page that mentions the topic in passing. For each gap, the practical move is a dedicated article built for that question: direct answer up front, receipts linked at every claim, specifics instead of platitudes. Each suggestion carries a button that hands its questions straight to ProofWrite, which researches and writes exactly that kind of article — fact-checked, with sources linked at the claims they support.

Is one check enough to know where I stand?

No, and the tool will not pretend otherwise. AI citations fluctuate with phrasing, with the day you ask, and with what engines have recently crawled, so a single check is a snapshot — useful for finding your biggest gaps, not for declaring victory or defeat. The durable answer is monitoring: running the same questions on a schedule and watching whether your citation share trends up after you publish. ProofWrite's weekly citation monitor does exactly that, across ChatGPT, Gemini and Google AI Overviews.

Can any tool guarantee my site gets cited by AI?

No — and you should be skeptical of anyone claiming otherwise. AI engines do not publish their source-selection logic, results are platform-specific, and citation behavior changes as models and their search layers are updated. What this tool can honestly do is measure whether you are cited today for the questions that matter, show you who is being cited instead, and explain the concrete, observable differences between their pages and yours. Acting on those differences is the highest-probability path to citations — a strong bet, not a guarantee.

AI Visibility Checker: Does ChatGPT Cite Your Site? | ProofWrite