Definition
Share of voice in AI search is how often your brand is mentioned compared with competing brands on the same set of questions. If five brands are named 100 times in total and yours accounts for 30, your share of voice is 30%.
Unlike visibility rate, it is relative: it can fall even when your own mentions rise, because a competitor rose faster. That makes it the right metric for competitive position and the wrong one for absolute progress.
Why it matters
Buyers compare. Knowing that you are named in 40% of answers matters less than knowing that a competitor is named in 70% of the same ones.
How it is measured
Brand mentions are counted across the same questions, platforms and period for every tracked brand, and each brand’s share of the total is reported with the questions where the gap is widest.
