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GEO Glossary

AI Share of Voice

Term from the world of AI visibility – explained simply by the GeoStars team.


Definition

Share of your own brand in all brand mentions in the AI answers of a topic area. The central competitive metric of AI visibility. Measure Share of Voice →

Want to know how your brand stands on this topic? GeoStars measures your AI visibility across ChatGPT, Google AI Overviews, Gemini, Perplexity and Microsoft Copilot – First measurement in minutes, 7 days free.

In depth

The metric for market share in AI search

AI Share of Voice puts your brand mentions in relation to all brand mentions in the relevant AI answers. A Visibility Score of 40 % can be strong or weak – only the comparison shows it: if your main competitor is at 70 %, you are losing the AI channel; if they are at 20 %, you dominate it. Share of Voice makes AI visibility strategically interpretable.

How to use Share of Voice operationally

Watch the metric per topic cluster and per platform: maybe you lead on product comparisons in ChatGPT but lose on pricing questions in Perplexity. That is exactly where GEO actions start. The Competitor radar from GeoStars tracks up to 10 competitors in parallel for this and shows shifts over time.

Frequently asked questions
The principle is the same (share of total attention), the data basis is new: instead of ad pressure or rankings, brand mentions in generated AI answers count – measured through repeated prompts.
3–5 direct competitors are enough for clear signals. More competitors refine the picture in broad markets – GeoStars supports up to 10 per project.

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