AI Citation Checker

How the Perplexity Sonar API verifies your real-time citation status, how to interpret every possible result, and how to steal the answer position from a competitor.

The AI Citation Checker uses real-time live web data via the Perplexity Sonar API. Results reflect the actual AI search engine's answer at the moment of the check — not a cached or simulated response.

How it works

Unlike the AI Readiness Audit (which scores your page against structural signals), the Citation Checker performs a live query. It sends your keyword to Perplexity's Sonar API and then inspects the returned answer to check whether your domain appears as a cited source.

This is the only way to verify your actual citation status in a live AI answer engine, as opposed to predicting it from structural signals.

Your keyword is sent to Perplexity Sonar

Sonar returns a live AI answer with citations

We check if your domain appears in the citation list

The Perplexity Sonar API

Perplexity's Sonar API is the retrieval-augmented generation (RAG) layer that powers Perplexity.ai's answer engine. When you run a citation check, RankAsAnswer sends your keyword as a query to the Sonar model. The model returns:

The AI-generated answer text
A numbered list of cited URLs — the sources Sonar retrieved to construct the answer
Contextual snippets showing exactly what text the AI extracted from each cited source

RankAsAnswer parses this response to determine: (1) Is your domain cited? (2) Which competitors are cited? (3) What context did the AI use from each source?

Why Perplexity specifically?

Perplexity is the most transparent AI search engine — it always exposes its citation URLs and uses a RAG system that is directly auditable via the Sonar API. ChatGPT and Gemini do not expose their citation sources through a public API, making Perplexity the most reliable proxy for real-time AI citation status.

Running a citation check

Navigate to Entities & Topics

Go to the Entities & Topics page. Find the keyword you want to check citation status for.

Click "Check Citation"

The Check Citation button appears in each keyword row. Clicking it opens the Citation Check modal and initiates the live Perplexity Sonar query.

Wait for the live result

The check takes 5–15 seconds as the Sonar API processes the query in real time. A loading spinner is shown during this period.

Review your citation status

The result card shows your citation status, the full AI-generated answer, all cited sources with their snippets, and your competitors' citation positions.

Interpreting results

Citation check results have four possible states:

Cited — Primary Source

Your domain appears as citation #1 or prominently in the answer. This is the ideal state. The AI model considers your page the most authoritative source for this query.

Cited — Secondary Source

Your domain appears in the citation list but is not the primary source. You are being noticed. Focus on improving your AI Readiness Score to move to the primary position.

Not Cited — Competitor Cited

Your domain does not appear in the answer, but specific competitors do. The result card shows which competitor is in position #1, the snippet the AI extracted from their page, and what signals they have that you are missing.

Not Cited — No Domain Cited

The AI answer does not cite any specific domain — the answer is drawn entirely from the model's training data. This means the query does not yet trigger retrieval, which is actually a GEO opportunity: create content that forces the AI to pull from live sources.

Understanding "You are not cited"

"You are not cited" is not a dead end — it is a diagnosis. When you see this result, the system also shows you:

The domain(s) that were cited instead of yours
The exact snippet the AI extracted from those cited domains
Which position each competitor holds in the citation list
A comparison path to analyze the top competitor's page against your own

This information turns a failed citation check into a competitive intelligence report. Use it to run the next step: stealing the answer position from whoever is currently cited.

Strategy tip: Target the gap, not the score

Do not aim to beat a competitor's overall AI Readiness Score. Aim to close the specific signal gap that caused the AI to choose them over you for this query. Often it is one missing Schema tag or a single structural element.

Stealing the answer position

When a competitor is in the citation position you want, RankAsAnswer gives you a direct path to displace them. This is the highest-ROI workflow in the platform:

Run the Citation Check and find who is cited

After running a check where your domain is not cited, look at the sources list. The first result in the Sonar response is the citation position you want. Note the competitor URL that appears there.

Read the competitor's citation snippet

The result card shows the exact text snippet that Perplexity extracted from the competitor's page. This is the content that won the citation. Read it carefully — it tells you exactly what structure, phrasing, or schema type the AI preferred.

Copy the competitor URL and audit it

Copy the competitor URL from the result card. Paste it into the AI Readiness Audit with the same keyword. This gives you their AI Readiness Score and a full breakdown of the structural signals their page has that yours does not.

Identify the specific gap

Compare your Audit report against the competitor's. The gap is almost always in one or two specific signals — FAQ Schema, HowTo Schema, question-phrased H2 headings, or a specific content structure that matches the query intent.

Generate and implement the fix

Click Generate Fix on the relevant roadmap item in your page's Audit report. Apply the generated code or content change to your page. Re-run the Citation Check after deploying to confirm the shift.

One fix, one citation battle

Focus on one keyword at a time. Close the specific signal gap for that query before moving to the next keyword. Trying to improve everything at once dilutes your effort and makes it harder to measure what actually moved the needle.

Competitor citations

The citation check result card shows all domains cited in the AI answer, not just yours. This is valuable competitive intelligence:

Which competitors appear most frequently across your keyword set
Which competitor pages get cited for which specific queries
Competitor domains you were not previously tracking as a threat
The exact snippet text the AI extracts from each competitor — showing you their structural advantage

Citation data is aggregated over time in your Analytics → Share of Voice dashboard, where you can track citation trends across all competitors for your entire keyword set.

Cost & BYOK

Each citation check costs 1 credit from your monthly allocation. To run unlimited citation checks at zero credit cost:

Go to Settings → API Keys
Add your Perplexity API key in the Perplexity field
All citation checks will now use your own key — no credits deducted

See the Perplexity API Key Setup guide for step-by-step instructions including where to get a Perplexity API key.

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