AI share of voice compares how often a tracked brand is mentioned with how often its defined competitors are mentioned across the same set of AI answers. A simple calculation is brand mentions divided by all tracked-brand and competitor mentions in the measurement set.
Define the measurement set first
The percentage only means something when every brand is evaluated against the same prompts, assistants, dates, and corroboration rules. Changing the prompt set can change share of voice even when the underlying market did not move.
Read it beside other signals
- Mention rate shows whether the brand appears at all
- Position shows whether it leads or trails within an answer
- Sentiment shows how the mention is framed
- Cited sources help explain where the answer may be grounded
GeoSurfaced calculates competitor share of voice from tracked answers and keeps the prompt-level evidence available for review.