Key takeaways
- AVJ’s methodology treats brand mentions and linked citations as different observations. [1][2]
- The Citation Index design does not measure traffic, revenue, or brand sentiment. [2]
- As of Oct. 29, 2026, Google’s Generative AI performance report includes impressions from AI Overviews and AI Mode without documenting a breakdown between those features. [3]
Definition: AVJ’s methodology defines AI visibility as whether, how often, and how accurately an AI system mentions, describes, or cites a brand, organization, or website. [1]
Where does the concept appear?
The GEO paper uses visibility to describe content’s appearance in generative engine responses and introduces metrics for evaluating it. [4] AVJ’s general methodology uses a broader definition that also includes mentions and descriptions. [1]
How do citations and mentions differ?
Under AVJ’s methodology, a citation is a linked source URL attached to an answer, while a mention is a brand or organization named in the answer text. [2] A domain can receive a citation without its brand being named, and a brand can be named without a citation to its website. [2]
What can the available reports show?
As of Oct. 29, 2026, Google documents a Generative AI performance report covering impressions from AI Overviews and AI Mode. [3] Its listed dimensions are pages, countries, dates, and devices; it does not document a query dimension or an AI Overviews-versus-AI Mode dimension. [3]
| Measurement | What it represents |
|---|---|
| Google generative AI impressions | Appearances of links to a site in supported Google generative AI features. [3] |
| AVJ citation share | The share of citation slots assigned to a domain within the methodology’s valid-answer sample. [2] |
| AVJ presence rate | The share of valid answers citing a domain at least once. [2] |
| AVJ mention rate | The share of valid answers naming a brand at least once. [2] |
How does AVJ plan to measure it?
The Citation Index methodology defines citation extraction from structured fields and separate processing of brand mentions. [2] It also specifies repeated runs, uncertainty reporting, and limitations, including the difference between API responses and consumer-app experiences. [2]
The methodology describes a beta design with collection and publication still planned, not existing Index results. [2]
Related terms
Citation · Brand mention · GEO
How this was made: AVJ used AI tools to help draft this definition and compare it with the cited sources. Nhi Phan reviews the published version.
Sources
[1] AI Visibility Journal. Methodology. Updated Oct. 22, 2026; accessed Oct. 29, 2026. /methodology/
[2] AI Visibility Journal. AVJ Citation Index — Methodology. Methodology v0, published Oct. 23, 2026; accessed Oct. 29, 2026. /index/methodology/
[3] Google. Generative AI performance report (Search). Search Console Help; accessed Oct. 29, 2026. https://support.google.com/webmasters/answer/16984139
[4] Aggarwal, Pranjal, et al. GEO: Generative Engine Optimization. arXiv:2311.09735; revised June 28, 2024; accepted to KDD 2024; accessed Oct. 29, 2026. https://arxiv.org/abs/2311.09735