What is query fan-out?
Ask an AI search engine something and it rarely looks up your words and stops. It writes its own set of narrower questions, researches each one, and assembles a single answer out of what it finds. Those internal questions are the fan-out.
Which means the competition has quietly changed shape. You are no longer trying to rank a page for a phrase. You are trying to be in the research an answer gets built from — and that research is a handful of questions nobody shows you.
Why a list of questions isn't the job
Plenty of tools will hand you a list of related queries. It feels like progress, and then you sit looking at twenty of them with no idea which ones you already answer, which you half-answer, and which are worth a morning of writing.
The work is the second half: taking those questions back to a real page and finding out where it stands. That is what this does. Every question comes back Covered, Partial or Missing, and a Covered verdict carries the sentence from your page that earned it — checked word for word against your text before it is shown, because a tool that invents supporting quotes is worse than no tool.
How to use the free fan-out
Start broad rather than long-tail. “Dog treats” tells you more about a topic's shape than “best grain-free dog treats for puppies under 6 months”, which is already one leaf of the tree you are trying to see.
Set the country to the market you sell in. It changes the answers more than people expect: regulations, brands, prices and what counts as common sense are all local, and the questions follow.
Read the reasoning next to each question, not just the question. It tells you why an AI system would need that one answered — which is usually the part that tells you whether it belongs on your page or on its own.
Is this a content gap analysis?
No, and the difference matters when you are choosing a tool. A content gap analysis compares your keyword rankings against a competitor's and shows you what they rank for and you don't. It is a useful thing to know, and Ahrefs and Semrush do it well.
This compares your page against the questions an AI system would ask about your topic. Different axis, different answer — and one nobody can produce without reading your page, which is why it costs money to run and a keyword export doesn't.
Is the fan-out really free?
Yes, three a day, with no account and no email. Checking a page against it needs an account, because that reads your page and costs real money every time it runs.
Where do these questions come from?
From a model reasoning about the topic — and every free result says so on its face, because it is not live search data. Signed in, a run can be grounded in real search terms with volume and difficulty from Ahrefs, and each sub-query matched to the closest real one.
Will this tell me what to write next?
That is the part behind the account. Each gap gets a score out of 100 built from measured signals — how different the intent is, whether other pages already own it, whether anybody is searching for it, what it is worth to your business — and the unmeasured ones are named rather than quietly counted as zero.
Do you store my keyword?
The keyword and its result are cached for a day, so somebody asking the same thing gets an instant answer and it costs us nothing. No account, no email, nothing that identifies you.