Share of Model
Share of Model explained
A percentage looks comparable even when two vendors count differently. One counts answers mentioning a brand; another counts the brand’s share of all detected brand mentions. These are different metrics.
**Expose the counting rule.** Define whether repeated mentions within one answer count separately, which competitors are included and how spelling variants are recognised. Document the question panel, services, language and observation period.
**Separate frequency from quality.** A brand may appear often in an inaccurate context. Check factual accuracy, recommendation context and citations separately. The proportion does not directly measure human brand awareness or revenue.
Use it as a descriptive signal for a bounded sample. Changes become interpretable only when the method and panel remain comparable. For Creative Engineering, the useful follow-up question is which specific information is missing or misrepresented.
Examples
Hypothetical application
A brand appears in 40 of 100 documented test answers. Under a rule counting answers with at least one mention, its share is 40 percent. This hypothetical calculation describes the panel, not a share of all AI answers or purchases.
Key Points
- There is no single standard definition.
- Document numerator, denominator and panel.
- Assess accuracy separately from frequency.
- Not a direct awareness or revenue measure.
Practical application
Ask for the exact counting rule and underlying question panel before comparing scores.
Useful measures
Mention share in the panel
Report only with an explicit counting rule and comparison basis.
Accuracy share
Distinguish correct mentions from all mentions.
Common mistakes
- Presenting a sample as the model’s complete knowledge.
- Counting frequent but incorrect mentions as success.
Sources and context
- Aggarwal et al.: Generative Engine Optimization
Research on visibility measurement in a defined experimental environment.
Frequently Asked Questions about Share of Model
No. It describes a defined answer sample. Market share concerns a bounded market measure such as units sold or revenue.
Yes, if each brand is measured by the proportion of answers containing it and answers mention multiple brands. This is why the counting rule must be stated.
First reconcile questions, services, period, brand recognition and denominator. Identically named metrics are not necessarily identically defined.
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