Why it matters
It turns AI search visibility into one number you can track. For example: you ask 20 buyer questions to three assistants, so 60 answers. If you're named in 9, your share of voice is 15%. If your biggest competitor is named in 30, theirs is 50%.
Why it's useful:
- It shows whether your GEO work is moving anything.
- It shows which competitor the assistants prefer, so you know whose comparison page to write first.
- It's comparable over time, as long as the question set stays the same.
How Cosmo handles it
Cosmo tracks it weekly for you and your competitors across ChatGPT, Perplexity and Gemini. When a competitor dominates a question, he proposes the page that answers it, often a "vs" or "alternatives" article, as an approval card.