Glossary

Share of Model

Share of model measures how often a brand appears in AI-generated answers for a defined set of prompts, relative to competitors.

Share of model measures how often a brand is mentioned or cited in AI-generated answers for a defined set of prompts, relative to its competitors. It is the AI search equivalent of share of voice in traditional media measurement.

How it works

A brand defines the prompts that matter commercially, runs them repeatedly across engines like ChatGPT, Perplexity, and Gemini, and records which brands each answer mentions or cites. The resulting percentage is tracked over time and against competitors, revealing where the brand is winning AI visibility and where rivals own the answer.

Why it matters

You cannot manage what you do not measure. Share of model turns AI visibility from anecdote into a KPI: it shows whether GEO work is moving the number, which competitors dominate which topics, and where the biggest citation gaps sit. Learn more about our AI SEO agency and share of model tracking.

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