Citation Efficiency
Citation Efficiency is the ratio of a page's AI citations to its SERP impressions. It measures a page's ability to convert visibility into citations.
Definition
Citation Efficiency is the ratio of a page’s AI citations to its SERP impressions. It measures a page’s ability to convert visibility into citations, not its SEO quality or its traffic.
Formula
Citation Efficiency = AI citations ÷ SERP impressionsA ratio above 1 means a page is cited more often than it is seen in search. This is possible because impressions and citations are not measured on the same surface: generative assistants can draw on their own index or on crawl databases without generating a SERP impression.
How to read it
A low Citation Efficiency on a very visible page signals a hub that attracts retrieval but does not capture the citation. A high Citation Efficiency on a barely visible page reveals a high-potential answer page.
Limits
An exploratory metric, not an industry standard. It depends on the sample, the window and the engine measured, and is mainly useful to compare similar pages.
Quotable line
Citation Efficiency measures a page’s ability to convert visibility into citations, not its SEO quality.
Going further
Applied across three verticals in Why AI often cites your least visible pages in search.
What to retain before using it.
How is Citation Efficiency calculated?
By dividing a page's AI citations by its SERP impressions, over the same observation window.
Is a ratio above 1 normal?
Yes. A page can be cited more often than it is seen in search, because impressions and citations are not measured on the same surface: generative assistants can draw on their own index without generating a SERP impression.
Is it an industry-standard metric?
No. It is an exploratory metric, useful mainly to compare similar pages, not an established standard.