There is plenty of advice about GEO.
There is very little measurement.
Every claim in these guides comes from data Korea AI Pulse collected itself — 324 answers gathered by putting real user questions to four AI engines every week, and 1,371citations pulled out of them. If we can’t show the evidence, the advice doesn’t go in.
What GEO actually is — read off measured AI answers, not theory
A definition of GEO (Generative Engine Optimization) and how it differs from SEO, explained with data collected by asking four AI engines the same real questions week after week.
MeasuredIn 86% of questions, the four engines shared zero recommended brands
The engine playbook — only one AI reads Korea's biggest blog platform
GPT, Claude, Gemini and Grok read different webs. We broke down roughly a thousand measured citations by source type to map which route reaches which engine.
Measured68% of all Naver blog citations came from Grok alone
How brands get recommended — four patterns found in the measured data
We reverse-engineered the brands the engines already recommend. A large share of the stated reasoning turned out to be sentences the business wrote about itself.
Measured64% of measured citations point at the business's own website
How to check whether your brand appears in ChatGPT — and why once isn't enough
How to check properly, and why a single check tells you almost nothing. We show what happens when the same question is asked again a few days later.
MeasuredGPT replaced 97% of its citations when asked again three days later
Every figure quoted in these guides can be traced back to its source on statistics and source analysis, and both are refreshed as more collections land.