AI SEO Glossary

Share of Voice in AI Search is the percentage of relevant AI-generated responses in which your brand appears, relative to the total responses across a defined set of queries. If 100 relevant prompts are tested and your brand is mentioned in 34 of the AI responses, your Share of Voice for that query set is 34 percent. It is a competitive metric. The question is not just whether you appear, but how often you appear compared to direct competitors being mentioned in the same response set. Share of Voice in AI is becoming a primary benchmark for brand performance in the AI search era, especially for agencies reporting to clients.

Measuring Share of Voice in AI requires defining a representative set of prompts that reflect the queries your target audience is asking across AI platforms, running those prompts systematically across the platforms you care about, recording which brands appear in each response, and calculating the percentage of responses where your brand is present versus competitors. This process needs to be repeated on a regular cadence to track changes over time. Because AI responses vary with every query, statistical sampling across a meaningful number of prompt variations is necessary to produce reliable Share of Voice estimates.

Why it matters: This is how you quantify AI search performance in a world where there are no rank positions to report. It gives you a comparable, trackable number.