Gyms in Utrecht that AI assistants recommend
We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for gyms in Utrecht, three times each, in Dutch, and counted who they named. These are the businesses named in two or more of the 36 answers.
Names are printed as the assistants wrote them. We have not checked that any of them is good, open, or real.
- Answers
- 36
- Businesses named
- 23
- Named only once
- 12
- Named by 2+ assistants
- 6 of 11
- Named again on a rerun
- 75%
Edition September 2026. Download the data
Asked for gyms in Utrecht, ChatGPT, Claude and Gemini most often named Basic-Fit (94% of answers), SportCity (86%) and TrainMore (67%). Across 36 answers they named 23 different businesses, 12 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.
| # | Business | AI Recommendation Rate | ChatGPT | Claude | Gemini | Questions | Avg. position |
|---|---|---|---|---|---|---|---|
| 1 | Basic-FitAlso written Basic-Fit UtrechtIs this your business? | 95%: 82 to 99% | 83% | 100% | 100% | 4 of 4 | 1.8 |
| 2 | SportCityAlso written SportCity Utrecht, Sportcity UtrechtIs this your business? | 95%: 71 to 94% | 92% | 92% | 75% | 4 of 4 | 2.7 |
| 3 | TrainMoreAlso written TrainMore UtrechtIs this your business? | 95%: 50 to 80% | 100% | 0% | 100% | 4 of 4 | 2.1 |
| 4 | David Lloyd UtrechtIs this your business? | 95%: 50 to 80% | 17% | 83% | 100% | 4 of 4 | 3.9 |
| 5 | Fit For FreeAlso written Fit For Free UtrechtIs this your business? | 95%: 37 to 68% | 0% | 100% | 58% | 4 of 4 | 3.1 |
| 6 | CrossFit UtrechtIs this your business? | 95%: 10 to 35% | 0% | 58% | 0% | 3 of 4 | 5.3 |
| 7 | Newstyle HealthcentersAlso written Newstyle Health CentersIs this your business? | 95%: 6 to 29% | 8% | 0% | 33% | 3 of 4 | 2.2 |
| 8 | HFCAlso written HFC Utrecht, HFC Fitness Utrecht, HFC Health & Fitness Club UtrechtIs this your business? | 95%: 4 to 25% | 0% | 33% | 0% | 3 of 4 | 4.3 |
| 9 | Club PellikaanIs this your business? | 95%: 4 to 25% | 0% | 0% | 33% | 2 of 4 | 4.8 |
| 10 | De WorkoutIs this your business? | 95%: 3 to 22% | 25% | 0% | 0% | 2 of 4 | 2 |
| 11 | BuitenFit UtrechtIs this your business? | 95%: 2 to 18% | 0% | 0% | 17% | 1 of 4 | 6 |
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. 12 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.
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.
| # | ChatGPT | Claude | Gemini |
|---|---|---|---|
| 1 | TrainMore100% | Basic-Fit100% | Basic-Fit100% |
| 2 | SportCity92% | Fit For Free100% | TrainMore100% |
| 3 | Basic-Fit83% | SportCity92% | David Lloyd Utrecht100% |
| 4 | De Workout25% | David Lloyd Utrecht83% | SportCity75% |
| 5 | David Lloyd Utrecht17% | CrossFit Utrecht58% | Fit For Free58% |
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.
<a href="https://aigrow.gg/index/gyms/utrecht"><img src="https://aigrow.gg/badges/index/2026-09/gyms/utrecht.svg" width="312" height="100" alt="Named by AI assistants: Gyms in Utrecht, 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.
- 1Wat is de beste sportschool in Utrecht?What is the best gym in Utrecht?
- 2Ik wil me inschrijven bij een sportschool in Utrecht. Welke sportscholen zou je aanraden?I want to join a gym in Utrecht. Which ones would you recommend?
- 3Welke sportschool in Utrecht is goed voor beginners?Which gym in Utrecht is good for beginners?
- 4Waar kan ik in Utrecht een sportschool met goede groepslessen vinden?Where can I find a gym in Utrecht with good group classes?
How to read this page
- 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.
- 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
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.
Edition September 2026 · published by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0