Share of Answer is a metric that shows how much space your brand takes up in AI answers related to your industry, compared to competitors. It’s the AI-search-era equivalent of “market share” or “share of voice” from classic SEO.

Why is a new metric needed?

Classic ranking doesn’t measure AI answers. “What position am I in?” is meaningless in an answer given by ChatGPT; there’s no ranking there, there’s mention. Share of answer emerged to measure this new reality: in what share of relevant answers, and how prominently, is your brand mentioned?

How is share of answer measured?

  1. Build a question panel. Prepare a representative list from your industry’s commercial and informational questions.
  2. Run it across platforms. Ask these questions at regular intervals on platforms like ChatGPT, Google AI Overviews, Perplexity and Copilot.
  3. Record the mentions. Note which brands are mentioned in each answer and who is cited.
  4. Calculate the share. Work out your share and competitors’ share within total mentions.

What to watch out for

  • Variability. AI answers change by time, location and model. A single measurement is misleading; regular, multi-question measurement is needed.
  • Bias. If you build the panel only from questions you win, the measurement becomes meaningless. A representative and honest panel is essential.
  • Context. Alongside the mention, whether you’re mentioned accurately and positively also matters.

Growth with share of answer

Tracking share of answer regularly shows whether GEO work is paying off. It identifies questions where competitors stand out but you don’t appear, and sets your priority list. This is at the center of our visibility measurement service.

Summary

Share of answer is a new metric that measures your total visibility in AI answers compared to competitors. It becomes meaningful with regular, representative and multi-platform measurement. To see your own share of answer, you can request a sample report.