Share of Model

What is share of model?

Share of model is your brand’s slice of the answer. As buyers shift from ten blue links to assistants, the response itself has become the new digital shelf space. When someone asks ChatGPT or Gemini for a recommendation in your category, share of model is how much of that answer belongs to you — and how much goes to rivals. Engines compose answers from a small set of sources they trust, so presence inside the response has to be earned in those sources first.

Acromatico blends Miami photography craft with AI studio precision to benchmark your share of model, surface citation gaps, and give engines clearer, better-sourced reasons to recommend your brand.

Why does share of model matter?

Most purchase journeys now begin with a question to an assistant, not a search box. If a model never names you, those buyers never see you — no matter how strong your classic rankings are. Share of model makes that invisible layer measurable, so you can compete where recommendations are actually formed, track whether your work moves the number, and prove you are landing inside the answer.

How do you calculate share of model?

Worked example: across a 100-prompt set, all tracked brands earn 200 eligible mentions in total and 34 of them are yours — your share of model is (34 ÷ 200) × 100 = 17%.

Credible measurement documents three things up front: the prompt set, the named model versions, and the dates. Prominence weighting matters because a brand cited first and described in detail counts for more than a passing name-drop.

Because models update frequently and outputs vary with phrasing, treat share of model as a comparative metric — your visibility for specific prompts at a specific time, not a fixed market share. Track it on a schedule, against the same competitors, and the trend becomes the signal worth reading.

How do you improve share of model?

Close the gaps the measurement reveals:

• Publish content that answers the prompts your buyers actually ask, in the words they use.
• Earn mentions on the sources engines cite most in your category — comparison pages, reviews, and roundups.
• Keep facts about your brand consistent everywhere models look: your site, your profiles, and third-party pages.

Then re-run the same prompt set and compare. Share of model grows through iteration and evidence, not volume alone — the same measure-and-refine loop behind our AI SEO / GEO work.

How is share of model different from share of voice?

Share of voice measured your slice of search results and ad impressions; share of model measures your slice of AI-generated answers. The mechanics differ — search ranks pages, while models compose answers from the sources they trust — but both are comparative: your number only means something next to your competitors’, tracked on the same prompt set over time.

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