Share of voice
Share of voice in AEO is the proportion of answers that name your brand versus the competitors you track, across the prompts and engines you monitor.
Share of voice in AI answers is the proportion of tracked answers that name your brand, measured against the competitors in your set. If you appear in 30 of 100 captured answers, your share of voice is 30%.
It is only meaningful when the prompt set, engines, and geography are fixed, because those define the denominator. A share-of-voice number without that context is not comparable over time and should not be reported to a client.
Because it compares you with named competitors, share of voice turns AI visibility into something actionable: you can see which prompts a rival owns, then target the source those answers cite. It is the metric that most resembles traditional rank tracking, with the answer as the unit.
Related: Share of voice feature · Share of voice in AI answers · AI visibility · Full glossary