Four engines, in numbers
Given an identical question, the engines differ completely on whether they search, whether they cite, and whether they name anyone. Aggregated across everything collected from 2026-07-18 to 2026-08-01.
- Tracked questions
- 81
- Parsed answers
- 324
- Collections to date
- 714
- Citations captured
- 1,371
What this data says
Four things fall straight out of the measurements. These figures move as more collections land.
Grok runs a real web search on 100% of its answers; Claude manages only 72%. When an engine doesn't search, only brands already baked into its training data can appear.
Grok produces 47% of all citations to Korean local sources — Naver blogs, Instagram, community forums. The other engines stick to official sites and platform profiles, so local review marketing effectively reaches one engine out of four.
Gemini names an average of 5.9 businesses or services per answer. It is the engine where competition for a named slot is fiercest.
Across the four engines, Law firms questions have the lowest rate of naming anyone at all, at 75%. Nobody has locked this category down yet, which makes it the easiest to enter.
How the engines behave
81 questions × 4 engines, latest collection. The reason GEO strategy has to differ per engine is contained in these six numbers.
Share of answers where the engine ran at least one web search first
Share of answers with at least one source link attached
Share of answers naming at least one business or service
Average number of businesses or services named in a single answer
Average number of source links attached to a single answer
Average character count of the latest collected answers
View as a table
| Engine | Search rate | Citation rate | Naming rate | Named / answer | Citations / answer | Avg length |
|---|---|---|---|---|---|---|
| GPT | 91% | 84% | 83% | 3.3 | 3.8 | 1,194 |
| Claude | 72% | 72% | 72% | 2.6 | 3.8 | 595 |
| Gemini | 85% | 85% | 100% | 5.9 | 7.7 | 1,769 |
| Grok | 100% | 100% | 100% | 5.9 | 5.1 | 1,423 |
Where the engines will name names
Share of answers naming at least one business, by vertical and engine. Darker means more willing to name — and every pale cell is a slot still open.
| Vertical | GPT | Claude | Gemini | Grok |
|---|---|---|---|---|
| Vet clinics (22) | 68% | 68% | 100% | 100% |
| Law firms (13) | 62% | 38% | 100% | 100% |
| Restaurants (14) | 100% | 79% | 100% | 100% |
| Tech & fintech (13) | 100% | 85% | 100% | 100% |
| Insurance (9) | 89% | 100% | 100% | 100% |
| Fortune telling (5) | 80% | 60% | 100% | 100% |
| GEO & AI marketing (5) | 100% | 80% | 100% | 100% |
The 15 brands AI recommended most
Ranked by how many times the four engines named them across all verticals. The coloured dots show which engines named each one — a brand hitting all four owns that part of the answer space. Names are left in Korean, as returned.
- 1법무법인 대륜Law firms · 12 questions23×
- 2카카오페이Tech & fintech · 8 questions16×
- 3뱅크샐러드Tech & fintech · 11 questions15×
- 4현대해상Insurance · 7 questions12×
- 5KB손해보험Insurance · 5 questions12×
- 6DB손해보험Insurance · 6 questions9×
- 7토스Tech & fintech · 4 questions8×
- 8점신Fortune telling · 4 questions8×
- 9법무법인 오현Law firms · 6 questions8×
- 10보맵Tech & fintech · 3 questions7×
- 11삼성화재Insurance · 4 questions7×
- 12토스 (비바리퍼블리카)Tech & fintech · 5 questions7×
- 13법무법인 YKLaw firms · 6 questions7×
- 14예은동물의료센터Vet clinics · 3 questions6×
- 15카카오뱅크Tech & fintech · 4 questions6×
What the answers are built on — source types
The 1,371 measured citations, broken down by type. Colour shows which engine produced each citation — the Naver blog and social segments are effectively Grok on its own. Domain-level detail lives on source analysis.
Slots still empty — where to get in
Question × engine combinations where no brand has been named yet. A filled dot means that engine has recommended nobody for this question — publish the right content and you take the slot.
- Vet clinicsIs there a vet clinic in Suwon that treats exotic pets like rabbits and hamsters?7 brands competing · 2 engines emptyGPTClaudeGeminiGrok
- Law firmsWhich Korean law firm is known for winning traffic accident settlements?8 brands competing · 2 engines emptyGPTClaudeGeminiGrok
- Law firmsI was scammed in an investment — which Korean law firm is known for recovering fraud losses?12 brands competing · 2 engines emptyGPTClaudeGeminiGrok
- Vet clinicsMy dog was diagnosed with a mammary tumour — recommend a vet clinic in Seoul that's good at tumour surgery14 brands competing · 2 engines emptyGPTClaudeGeminiGrok
- Fortune tellingWhere can I get a saju reading in Korea from someone with a real reputation?14 brands competing · 2 engines emptyGPTClaudeGeminiGrok
- Law firmsI'm getting divorced — which Korean law firm is known for winning division of assets?15 brands competing · 2 engines emptyGPTClaudeGeminiGrok
- Law firmsI was unfairly dismissed — which Korean law firm is known for labour cases?18 brands competing · 2 engines emptyGPTClaudeGeminiGrok
- Vet clinicsCan you recommend a vet clinic in Gangnam that does patellar luxation surgery well?7 brands competing · 1 engine emptyGPTClaudeGeminiGrok
- Vet clinicsRecommend a vet clinic in Ilsan that's good at heart check-ups for senior dogs7 brands competing · 1 engine emptyGPTClaudeGeminiGrok
- Vet clinicsRecommend a vet clinic in Suwon that's good at dental scaling for dogs8 brands competing · 1 engine emptyGPTClaudeGeminiGrok
- Vet clinicsWhich 24-hour emergency vet near Songpa is open right now?8 brands competing · 1 engine emptyGPTClaudeGeminiGrok
- Vet clinicsIs there a cats-only vet clinic in Busan?8 brands competing · 1 engine emptyGPTClaudeGeminiGrok
Method: search rate, citation rate, citations per answer and average length come from the latest collection per question × engine; naming rate, businesses named per answer and the open slots come from the parsed answer entries. Answers that named nobody are counted as measured, not discarded. Every timestamp and raw answer is in the collection log.