GEO & AI Visibility
Glossary (2025)

GEO & AI Visibility
Glossary (2025)

A simple glossary of the core concepts behind AI brand visibility and Generative Engine Optimization.

Track. Improve. Automate.

A simple glossary of the core concepts behind AI brand visibility and Generative Engine Optimization.

A simple glossary of the core concepts behind AI brand visibility and Generative Engine Optimization.

  1. AI Visibility Tools

    Platforms that check whether AI systems like ChatGPT, Gemini, Claude or Perplexity mention your brand, skip it, or replace it with competitors.

    Examples: Vizii, Profound, Peec, Hall Monitor.

    Platforms that check whether AI systems like ChatGPT, Gemini, Claude or Perplexity mention your brand, skip it, or replace it with competitors.

    Examples: Vizii, Profound, Peec, Hall Monitor.

  2. AI Visibility Tools

  3. GEO (Generative Engine Optimization)

    The practice of improving a brand’s visibility inside AI-generated answers.
    GEO focuses on how often AI mentions your brand, how accurately, and compared to competitors.

    The practice of improving a brand’s visibility inside AI-generated answers.
    GEO focuses on how often AI mentions your brand, how accurately, and compared to competitors.

  4. The percentage of prompts where AI platforms mention your brand versus competitors.
    Equivalent to “Share of Voice” — but for AI answers.

    The percentage of prompts where AI platforms mention your brand versus competitors.
    Equivalent to “Share of Voice” — but for AI answers.

    Share of Model (SoM)

    Share of Model (SoM)

  5. Missing Mentions

    Missing Mentions

    Cases where AI should mention your brand in a category or recommendation query — but doesn’t.

    Example:
    User asks “Best tools to track AI brand mentions” → only competitors appear.

    Cases where AI should mention your brand in a category or recommendation query — but doesn’t.

    Example:
    User asks “Best tools to track AI brand mentions” → only competitors appear.

  6. Generative
    Engine Optimization

  7. Competitor Substitution

    Competitor Substitution

    When AI replaces your brand with a competing brand in recommendations, definitions, or comparison lists.

    When AI replaces your brand with a competing brand in recommendations, definitions, or comparison lists.

  8. AI Source Graph

    AI Source Graph

    The network of pages, articles, schema and citations that AI models rely on to generate answers about your brand or category.

    The network of pages, articles, schema and citations that AI models rely on to generate answers about your brand or category.

  9. A simple glossary of the core concepts behind AI brand visibility and Generative Engine Optimization.

Want a deeper breakdown?

Read our comparison of the leading AI visibility tools:
here