How do I measure GEO visibility and ROI?

Measuring GEO visibility is simple in concept: run the same questions before and after, score the answers the same way, and see what moved. ROI is harder because a mention does not always come with a click. The practical approach is to value a mention based on what one new customer is worth, then compare that to the cost of the build.

The visibility score

Pick fifteen questions. Run each through ChatGPT, Grok, Perplexity, and Google AI Overviews. Score each result:

• — 0 — your business is not mentioned and no page from your site is cited.
• — 1 — your site is cited or paraphrased, but your business is not named as the answer.
• — 2 — your business is named in the answer body.

Fifteen prompts times four engines gives sixty scores and a maximum of 120 points. Most small sites start between 0 and 8. The direction matters more than the absolute number.

What to track alongside the score

• — Which engine moved and which did not.
• — Which questions moved and which stayed flat.
• — Whether the answer is correct, wrong, or outdated.
• — Whether an AI Overview appeared for each query.

How to think about ROI

Work out the lifetime value of one customer. If a $750 build produces two customers worth $500 each over a year, it paid for itself. If a customer is worth thousands, the math is easier. GEO is usually cheaper than a sustained ad campaign, but it is also slower and less predictable.

What not to measure

• — Keyword rank alone. It says nothing about ChatGPT or Perplexity.
• — Total impressions from Search Console. They include surfaces GEO does not touch.
• — Clicks from AI citations. Most engines do not pass click data.

Sources

Search Console documents what Google reports about AI feature clicks. Engine-specific behavior must be observed manually; vendors do not publish full citation logs.