RESEARCH

The Oction AI Visibility Index: methodology

How Oction Agency measures AI search visibility for law firms and dental practices across major North American cities.

Short answerThe Oction AI Visibility Index will measure how often law firms and dental practices are named in AI-generated answers across Google AI Overviews, AI Mode, ChatGPT, Gemini and Perplexity, for common client questions in Vancouver, Calgary, Toronto, Miami, New York and Los Angeles.

What we will measure

Presence rate: the share of tracked questions where a business appears in the AI answer at all.

Top-3 rate: the share of appearances where the business is among the first three named.

Average position: where the business appears inside the answer when it is named.

Citations: the number of links in AI answers that point to the business’s own website.

Questions and markets

For each city, we will track a fixed set of client questions per practice area and treatment type, written the way clients actually ask them, for example “best family lawyer in Calgary” or “emergency dentist open now in Toronto”.

Platforms

Google AI Overviews, Google AI Mode, ChatGPT, Gemini and Perplexity. Each question is run on each platform on a recurring schedule, because AI answers change.

Limits

AI answers vary by location, account, wording and time. The index is a directional benchmark, not a guarantee of what any one person will see. We will publish the question sets and collection dates with each report.

Publication

The first index report will be published here once data collection is complete. Businesses that want their own numbers in the meantime can request an AI visibility check.

Published by Oction Agency, October 31, 2026.

Next step

See how AI tools answer for your business.

We check ChatGPT, Gemini, Perplexity and Google AI Overviews for your services and market.