Measuring GEO: Five KPIs That Actually Matter
"Did GEO bring more business?" is a fair question — but "our rankings improved" is not an answer.
GEO results sit in layers: are you cited, are you seen, do people visit, do they enquire. These five KPIs map to those layers.
KPI 1: citation rate
Definition: of a fixed set of 30 prompts, how many AI answers mention your brand.
- Test monthly, same prompts, same platform versions
- Log: mentioned or not, position, whether a link appears
- Target: 20–30% improvement over baseline within three months
KPI 2: AI impressions in Search Console
Impressions from AI Overviews and AI Mode are available in the Generative AI performance report in Search Console.
- Watch the trend, not a single month
- See which pages generate AI impressions
- Rising impressions with falling clicks is normal — summaries absorb clicks
KPI 3: AI referral traffic
In GA4 or server logs, track referrals from chatgpt.com, perplexity.ai, gemini.google.com and copilot.microsoft.com.
- Low volume but high intent — the user already saw a recommendation
- Check landing pages: service pages or articles
- Compare conversion rate against other channels
KPI 4: branded search volume
Queries containing your brand name in the GSC query report. This is the most underrated GEO metric.
- After an AI mention, many users search the brand name directly
- Compare three months before and after the work
- Also track "brand + service" combinations
KPI 5: share of answer
For the same question, how many companies the AI answer names — and how often you are one of them.
- Pick ten core questions and record the companies named each time
- Share of answer = your appearances ÷ total tests
- Log the competitor set to see who appears consistently
What a monthly report should contain
- One-page summary: changes, biggest finding, next actions
- KPI table: current versus baseline for all five metrics
- Prompt detail: results for all 30 questions
- Content log: what was published or rewritten
- Technical log: indexing, schema and speed fixes
When is it working?
- Months 1–2: your brand starts appearing for core questions, even low down
- Months 3–4: at least 20% of core questions mention you; AI referral traffic appears
- Month 6: visible lift in branded search, enquiries attributed to AI platforms
FAQ
How do we measure without tools?
Manually: open a fresh conversation each time (to avoid context carry-over) and log every prompt. Thirty prompts takes 30–45 minutes.
AI answers vary each time — how do we compare?
Fix the prompts, the platform and the cadence (for example the first Monday of each month), and average multiple runs.
Impressions rose but revenue did not — is it useless?
Find which layer broke: mentions without clicks suggests low brand familiarity; traffic without enquiries points to weak service-page persuasion.
Should we buy a third-party AI monitoring tool?
Useful if budget allows, but not required. A spreadsheet and a fixed process are enough at the start.
Want a ready reporting framework?
Our monthly report covers all five KPIs with the 30-prompt detail and next actions. Details: SEO & GEO AI search optimization.
Further reading: The complete GEO guide for Hong Kong, How ChatGPT chooses citations