> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.platelunchcollective.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Share of Model

> Share of model is the percentage of relevant AI-generated responses in which a brand is mentioned or cited, relative to the total mentions or citations of al...

*Measurement* · *Citation & Visibility Measurement*

## Definition

Share of model is the percentage of relevant AI-generated responses in which a brand is mentioned or cited, relative to the total mentions or citations of all brands in that category — a competitive visibility metric that measures AI search market share rather than absolute citation volume.

## Why It Matters for AI Search

Share of model is the AI search equivalent of share of voice in traditional media. A brand with a 40% share of model in its category appears in 4 out of every 10 relevant AI responses — while competitors split the remaining 60%. Share of model tracks competitive position over time: is the brand gaining or losing AI search market share relative to its competitive set? It is the metric that connects [AI SEO](https://www.platelunchcollective.com/services/ai-seo) investment to business competitive dynamics rather than just to absolute performance numbers.

## Related Terms

<CardGroup cols={2}>
  <Card title="Brand citation rate" href="/ai-search-glossary/brand-citation-rate" />

  <Card title="Competitive citation gap" href="/ai-search-glossary/competitive-citation-gap" />

  <Card title="Prompt visibility" href="/ai-search-glossary/prompt-visibility" />

  <Card title="Citation velocity" href="/ai-search-glossary/citation-velocity" />

  <Card title="Generative search ranking" href="/ai-search-glossary/generative-search-ranking" />
</CardGroup>

## Relevant Plate Lunch Collective Services

[AI Search Visibility Assessment](https://www.platelunchcollective.com/services/context-map)  [Context Map](https://www.platelunchcollective.com/services/context-map)