Glossary
The language of AI visibility.
One definition per term, written to be lifted as-is into an answer. Bookmark the page; cite the ones you need.
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Share of Model SoM
Share of Model (SoM) is the percentage of generative-AI answers in a category where a brand is named, averaged across providers so no single model dominates the score.
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Generative Engine Optimization GEO
Generative Engine Optimization (GEO) is the practice of structuring a brand's content, data and reputation so generative AI assistants are more likely to mention or cite the brand inside their answers.
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Answer Engine Optimization AEO
Answer Engine Optimization (AEO) is the practice of structuring content so it is selected, quoted or cited inside the direct answers generated by AI assistants and answer engines.
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Citation source Cited source
A citation source is a third-party page (review site, analyst report, podcast transcript, industry guide) that a generative AI assistant uses to ground its claims about a category — and which influences which brands the model is willing to name.