Alvaro Peña de Luna 
GEO metrics are the key performance indicators that measure how visible your brand is inside AI-generated answers. Where traditional SEO metrics track your position in a list of links, GEO metrics (Generative Engine Optimization metrics) track whether engines like ChatGPT, Perplexity, and Google AI mention your brand, how prominently, and in what tone.
As users shift from scanning search results to reading AI answers, the metrics that describe success have to change with them. A brand can rank well in classic search and still be invisible inside the AI answers that increasingly shape decisions.
Why GEO needs its own metrics
Traditional SEO metrics assume a list of links and a click. Rankings, impressions, and organic clicks all describe a world where the user sees ten blue links and chooses one. AI answers break that model. The engine reads dozens of sources and synthesizes a single response, often without sending a click anywhere.
In that world, “what position do I rank for this keyword” is the wrong question. The right questions are: does the AI mention my brand, how does it describe me, and how do I compare to competitors in the same answer. GEO metrics exist to answer those questions.
The core GEO metrics
Mention rate
The percentage of tracked queries where your brand appears in the AI answer. This is the headline GEO metric, because you cannot shape an answer you never appear in. Track it per engine, since presence on ChatGPT can differ sharply from Google AI Overviews. See our AI visibility entry for the full picture.
Share of voice
Your share of brand mentions compared to competitors for the same set of queries, ideally weighted by mention quality rather than raw counts. A direct recommendation should not weigh the same as a passing reference in a list. Read the share of voice definition for the formula and detail.
Sentiment
Whether mentions are positive, neutral, or negative, often expressed as a positivity index from 0 to 100. Sentiment tells you whether an appearance helps or hurts. A high mention rate with negative framing is a problem, not a win. See AI brand sentiment for how this is scored.
Mention type
How the brand is referenced: a direct recommendation, a comparison against alternatives, an entry in a list, an illustrative example, or a cited source. The same mention count can mean very different things depending on type.
Citations
Which of your pages the AI links to or draws from when it answers. Citations tell you which content earns trust, so you can create more of it and strengthen the pages that already work.
Position and volatility
Where your mention sits in the answer, and how stable that position is over time. High volatility means the engine cites you inconsistently, a sign of fragile authority rather than a consolidated presence.
GEO metrics vs traditional SEO metrics
| Dimension | SEO metric | GEO metric |
|---|---|---|
| Unit of success | Ranking position | Mention in an answer |
| Visibility | Impressions, clicks | Mention rate, share of voice |
| Quality signal | CTR | Sentiment, mention type |
| Source insight | Backlinks | Citations |
| Stability | Ranking history | Position volatility |
The two are complementary. SEO metrics still matter, because organic results feed AI answers. GEO metrics tell you what happens after the engine reads those results and writes its own response.
How to measure GEO metrics
- Define a fixed query set. Choose the prompts where your brand could reasonably appear, grouped into topic clusters.
- Sample across engines, repeatedly. Run the prompts on ChatGPT, Perplexity, Google AI Overviews, and Google AI Mode, more than once, since answers vary between runs.
- Classify every mention. Record presence, sentiment, mention type, and citations for each appearance.
- Benchmark against competitors. Calculate share of voice per cluster to see where you lead and where you lag.
- Track the trend. Watch movement over time rather than a single snapshot, and tie changes back to content or PR actions.
How Mencoro tracks GEO metrics
Mencoro turns every brand appearance across ChatGPT, Perplexity, Google AI Overview, Google AI Mode, and Google SERP into concrete GEO metrics: mention rate, SERP rate, a positivity index, share of voice, mention type, and position volatility. Metrics roll up at project, cluster, and individual query level, so you can move from the big picture down to a single prompt. The search visibility feature page covers the metrics in depth, and our AI search guide explains how to act on them.
