First Mention Rate
The percentage of AI answers where your brand is the first recommendation listed — the AI equivalent of the top organic position.
Plain Language Definition
First Mention Rate tracks how often your brand is the very first recommendation presented by an AI assistant — not just mentioned at some point in the answer, but listed first before any other brand. Being first in an AI recommendation list is analogous to having the top organic position in traditional search, and research consistently shows first-position effects dramatically increase click and conversion rates.
Technical Definition
Ratio of AI-generated conversational responses where the target brand entity or citation appears before any competing brand entity in the output text sequence — calculated across a standardized query panel as a primary-position frequency indicator.
Why This Matters for AI Search Visibility
Position-one effects are as powerful in AI recommendations as in traditional search. Users presented with a list of AI suggestions disproportionately choose the first option. First Mention Rate is the metric that reveals whether your visibility is genuinely leading or merely participatory.