Glossary · Measurement
Prompt Coverage
The percentage of prompts in a tracked set that return at least one mention of a brand, out of the total number of prompts tracked.
How it works
Prompt coverage divides the number of tracked prompts that surface a brand anywhere in the answer by the total number of prompts in the set. A brand tracked against 100 prompts that shows up in 40 of them has 40% prompt coverage — regardless of how many times it's mentioned within any single answer.
Why it matters
Coverage measures breadth, not depth. A brand can have narrow but intense visibility — mentioned repeatedly across a handful of prompts — or broad but thin visibility, mentioned once across many. Tracking coverage alongside mention frequency shows whether a brand's presence is concentrated in one topic or spread across the full range of questions its buyers actually ask.
See more terms in the full glossary, or read the AI Visibility 101 guide for the full picture.