Share of Voice in AI Answers: How to Measure It (and What It Tells You)
Share of voice compares how often your brand and competitors are mentioned in AI answers. How it is calculated, how to read it and its limits.
Visibility tells you how often you appear. Share of voice tells you how you compare. In markets where assistants routinely name three or four brands, the comparison is often the more useful number.
The calculation
Across a set of AI answers, count the answers in which each tracked brand is mentioned. Share of voice is your count divided by the total count for all tracked brands:
share of voice = your mentions ÷ (your mentions + all competitor mentions)If, across 40 answers, you're mentioned in 18, Competitor A in 14 and Competitor B in 8, your share of voice is 18 ÷ 40 = 45%.
Why it is useful
- It normalises for market noise. If every brand's visibility drops because an engine started giving shorter answers, your share of voice stays meaningful.
- It shows competitive movement. A competitor gaining share often signals new coverage or content you should look at.
- It is easy to explain to leadership and clients.
Read it alongside position
Share of voice counts mentions, but not every mention is equal. Being named first carries more weight than being listed fifth. That's why Citewise AI also tracks your average position: the order in which tracked brands appear in each answer.
Know the limits
- It only covers the competitors you choose to track. Untracked brands can appear in answers too.
- It depends on your prompt set. Change the prompts and the number changes.
- It counts mentions, not sentiment. Always read a sample of answers to check context.
Putting it to work
Look for prompts where a competitor is mentioned and you aren't. Open those answers and check which sources were cited. That gives you a concrete list of pages and publications that are shaping the recommendation, and a place to start. See how Citewise AI shows this.