How we measure
How we measure which businesses ChatGPT names.
We ask ChatGPT the same questions customers ask, several times each. Then we count which businesses it names, and how often.
Free. No account, no credit card.
- Loodgieter Rotterdam Oostnamed in 16 of 20 answers
- Loodgieter Erasmusnamed in 13 of 20 answers
- Noah & Co.named in 12 of 20 answers
Filled = named in that answer.
How we count
Each answer is one dot.
The dots above are the 20 answers ChatGPT gave in its app on 26 Oct 2026. If a business is named in an answer, its dot is filled in. That gives each business a simple score: named in so many of the 20 answers.
The ongoing measurement uses ChatGPT with web search on, including the business cards shown in its answers.
The questions
Real customer questions, per trade and city.
People type full sentences into ChatGPT. We ask the same kind of questions: ten per trade and city, each one several times.
What we found
Reviews go hand in hand with being named. Your Maps position does not.
Your position in our Maps grid versus how often ChatGPT names you: Spearman −0.03, so no correlation. Number of reviews: 0.64. Businesses with 80+ reviews and a 4.8+ rating were named 8.3 times out of 20 on average. All others: 0.9 times.
Measured 26 Oct 2026 · plumbers in Rotterdam · 20 answers in the ChatGPT app, 5×5 Maps grid · one city, one trade: an indication, not a rule.
Limits
What we don't claim
- One answer is one sample, not a verdict.
- ChatGPT gives a different answer every time. That is why we count across many answers.
- We don't promise that ChatGPT will name you.
- So far we measure one city and one trade: plumbers in Rotterdam.
Your own market
Start with the free scan.
The free scan shows where you rank in Google Maps. Which Rotterdam plumbers ChatGPT names is in the public measurement.