Prompt volume is an estimate of how often real users ask a given question, or type of question, of AI assistants. It is the AI-search counterpart to search volume in traditional SEO, helping you judge which prompts are worth tracking and optimizing for based on how much real demand sits behind them.
For brands, prompt volume helps prioritize. A prompt you lose but that almost no one asks matters less than one you lose that many buyers ask daily. The data is harder to obtain than search volume, since AI conversations are private, so volume figures come from panels and sampling and should be treated as directional rather than exact.