Measuring Success in 2026: Voice Search Metrics & AEO KPIs
Clicks are dead. How do you measure "brand mentions" in a spoken conversation? We define the new KPIs for the AEO era: Share of Model (SoM) and Citation Velocity.
In traditional SEO, we measured success by clicks, sessions, and conversion rate. But when a user asks Siri "Who is the best AI agency?", and Siri replies "Vibe Marketing," zero clicks happen. The user got the answer, trusted the brand, and maybe walked into your store or direct-navigated to your site later.
This is the "Zero-Click" attribution nightmare. Marketing teams are seeing organic traffic drop while revenue holds steady. If you cannot explain this gap to your CFO, your budget will be cut.
New KPI: Share of Model (SoM)
We are moving from "Share of Voice" to "Share of Model." You need to track how often your brand is cited as the primary answer for your core questions across the "Big 3" engines: Perplexity, SearchGPT, and Gemini-Nano.
| Old Metric (SEO) | New Metric (AEO) | How to Track It |
|---|---|---|
| Click-Through Rate (CTR) | Citation Rate | Perplexity Pro Search (Manual/API Audit) |
| Keyword Ranking (#1) | Entity Sentiment Score | Custom LLM Scrapers (Sentiment Analysis) |
| Time on Page | Context Window Inclusion | Token Analysis (Are you in the RAG context?) |
| Backlinks | Information Provenance | Knowledge Graph Validation |
The "Direct-to-Brand" Funnel
In 2026, the funnel is shorter. Users don't "browse." They "decide."
Scenario: User asks: "Plan a 3-day trip to Tokyo."
- Old World: User clicks 5 blogs, reads "Top 10 Things to Do," experiences ad fatigue.
- New World: Gemini builds the itinerary. It cites "Timeout" for restaurants and "Marriott" for hotels. The user books immediately.
If you are not the cited entity, you are not in the consideration set to begin with. You cannot "retarget" someone who never visited your site.
How to Calculate "Zero-Click" ROI
We use a correlation model. We track Brand Search Volume (people typing "Vibe Marketing" directly) and overlay it with AEO Citation Growth.
ROI = (Direct Traffic ↑ + Brand Search ↑) - (Generic Traffic ↓)
If your generic traffic drops by 50% but your brand search doubles, you are winning. You are trading low-intent browsers for high-intent buyers who were educated by the AI before they even arrived.