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AI Visibility Index · September 2026

Gyms in Amsterdam that AI assistants recommend

We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for gyms in Amsterdam, three times each, in Dutch, and counted who they named. These are the businesses named in two or more of the 36 answers.

Check whether AI names youSee the ranking

Names are printed as the assistants wrote them. We have not checked that any of them is good, open, or real.

Gyms · Amsterdam
75%of answers named Basic-Fit
Answers
36
Businesses named
29
Named only once
15
Named by 2+ assistants
7 of 14
Named again on a rerun
80%

Edition September 2026. Download the data

Asked for gyms in Amsterdam, ChatGPT, Claude and Gemini most often named Basic-Fit (75% of answers), David Lloyd Amsterdam (67%) and TrainMore (64%). Across 36 answers they named 29 different businesses, 15 of them only once. Each of four buyer questions was asked three times, in Dutch, in September 2026.

The ranking

The AI Recommendation Rate is the fraction of the 36 answers that named a business. The range under it is a 95% confidence interval: where two ranges overlap, the gap between those businesses could be chance.

Gyms in Amsterdam named by AI assistants, September 2026
#BusinessAI Recommendation RateChatGPTClaudeGeminiQuestionsAvg. position
1Basic-FitIs this your business?75%95%: 59 to 86%50%75%100%4 of 42.4
2David Lloyd AmsterdamIs this your business?67%95%: 50 to 80%8%92%100%4 of 43.2
3TrainMoreIs this your business?64%95%: 48 to 78%92%0%100%4 of 42.4
4SportCityAlso written SportcityIs this your business?64%95%: 48 to 78%83%100%8%4 of 42.7
5VondelgymIs this your business?61%95%: 45 to 75%75%8%100%4 of 42.4
6Fit For FreeIs this your business?42%95%: 27 to 58%0%100%25%4 of 43
7CrossFit AmsterdamIs this your business?31%95%: 18 to 47%0%92%0%4 of 44.3
8Club SportiveAlso written Clubsportive, ClubSportiveIs this your business?28%95%: 16 to 44%8%0%75%3 of 44.6
9Saints & StarsIs this your business?11%95%: 4 to 25%33%0%0%2 of 41.8
10BasefitAlso written Basefit AmsterdamIs this your business?8%95%: 3 to 22%0%25%0%1 of 41.3
11RocycleIs this your business?6%95%: 2 to 18%17%0%0%1 of 44
12BigGymIs this your business?6%95%: 2 to 18%0%0%17%1 of 46
13HealthCityIs this your business?6%95%: 2 to 18%0%0%17%1 of 46
14Bootcamp AmsterdamIs this your business?6%95%: 2 to 18%0%17%0%1 of 47

Each assistant column is the share of that assistant's own answers. Questions counts how many of the four produced the name at least once; position is where it came in the answer's list, 1 being first. 15 more names came up in a single answer and are counted above but not listed.

Is this your business?

See what the assistants say about your business today. The free checker asks ChatGPT, Claude, Gemini and Grok two of the Index questions for this category, with the category and the place already filled in, and shows every answer word for word. About 30 seconds, no sign-up.

Check your businessNamed above? Add the badgeWhat the audit does

What each assistant said

The same questions, the same number of times, and often different names. Each column is one assistant's top five from the ranking above, with the share of its own answers that named them.

#ChatGPTClaudeGemini
1TrainMore92%SportCity100%Basic-Fit100%
2SportCity83%Fit For Free100%David Lloyd Amsterdam100%
3Vondelgym75%David Lloyd Amsterdam92%TrainMore100%
4Basic-Fit50%CrossFit Amsterdam92%Vondelgym100%
5Saints & Stars33%Basic-Fit75%Club Sportive75%

Named here? Put it on your site

Every business in the ranking was named in two or more answers. The badge says that and nothing more: no position, because the ranges above do not support one. It links back to this page, so anyone can check.

Correct or remove a listing
Named by AI assistants: Gyms in Amsterdam, AIGROW AI Visibility Index, September 2026
<a href="https://aigrow.gg/index/gyms/amsterdam"><img src="https://aigrow.gg/badges/index/2026-09/gyms/amsterdam.svg" width="312" height="100" alt="Named by AI assistants: Gyms in Amsterdam, AIGROW AI Visibility Index, September 2026"></a>

The questions

Asked word for word, three times each, to every assistant, in Dutch. The English under each is our translation. The prompt is the one the free scan uses. No web search, no location and no chat history, so every answer starts from the same place.

  1. 1Wat is de beste sportschool in Amsterdam?What is the best gym in Amsterdam?
  2. 2Ik wil me inschrijven bij een sportschool in Amsterdam. Welke sportscholen zou je aanraden?I want to join a gym in Amsterdam. Which ones would you recommend?
  3. 3Welke sportschool in Amsterdam is goed voor beginners?Which gym in Amsterdam is good for beginners?
  4. 4Waar kan ik in Amsterdam een sportschool met goede groepslessen vinden?Where can I find a gym in Amsterdam with good group classes?

How to read this page

The full method
What it measures
Which names these models produce when asked cold, from what they learned in training. It is not a review, a rating or our recommendation, and a business missing here may simply be one the models were never shown.
Why the ranges matter
36 answers is a sample. Asked again next month, most shares will move by a few points; the ranges say how far they could move by chance alone.
One business, several spellings
Branches, legal suffixes and spellings of one business are merged, and the other spellings are printed under its name. Names that might be two businesses are kept apart.
A name is wrong
If a business here is closed, misnamed or yours and you want it removed, tell us. We correct or remove it when the page is next published.

Where the assistants look

The sites read most often, with web search on, before the assistants answer about this category in the Netherlands. From the AI Source Map: 5 answers.

See every site for this category
reddit.com
Read in 80% of the answers
trainmore.com
Read in 60% of the answers
basic-fit.com
Read in 40% of the answers

Elsewhere in the Index

Gyms elsewhere
RotterdamThe HagueUtrechtAntwerpGhentAarhus
Also in Amsterdam
DentistsLawyersAccountantsPlumbersReal estate agenciesRestaurants

Is your business on this list?

The free scan asks the same assistants the questions your customers ask, scores whether they name you, and lists who they name instead.

Run the free AI scanRead the method

Edition September 2026 · published by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0