Gyms in Rio de Janeiro that AI assistants recommend
We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for gyms in Rio de Janeiro, three times each, in Portuguese, 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
- 21
- Named only once
- 9
- Named by 2+ assistants
- 7 of 12
- Named again on a rerun
- 66%
Edition September 2026. Download the data
Asked for gyms in Rio de Janeiro, ChatGPT, Claude and Gemini most often named Smart Fit (100% of answers), Bodytech (92%) and Bio Ritmo (58%). Across 36 answers they named 21 different businesses, 9 of them only once. Each of four buyer questions was asked three times, in Portuguese, 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 | Smart FitIs this your business? | 95%: 90 to 100% | 100% | 100% | 100% | 4 of 4 | 1.6 |
| 2 | BodytechAlso written BodyTechIs this your business? | 95%: 78 to 97% | 100% | 75% | 100% | 4 of 4 | 1.9 |
| 3 | Bio RitmoIs this your business? | 95%: 42 to 73% | 0% | 83% | 92% | 4 of 4 | 2.9 |
| 4 | BlueFitAlso written BluefitIs this your business? | 95%: 23 to 52% | 17% | 58% | 33% | 4 of 4 | 2.9 |
| 5 | SelfitAlso written Selfit Academias, Selfit AcademiaIs this your business? | 95%: 20 to 50% | 25% | 58% | 17% | 4 of 4 | 4.5 |
| 6 | Cia AthleticaAlso written Companhia AthleticaIs this your business? | 95%: 18 to 47% | 25% | 67% | 0% | 3 of 4 | 3.9 |
| 7 | Fórmula AcademiaAlso written Academia Fórmula, Formula AcademiaIs this your business? | 95%: 6 to 29% | 17% | 8% | 17% | 3 of 4 | 4.2 |
| 8 | ProformaAlso written Academia ProformaIs this your business? | 95%: 6 to 29% | 0% | 0% | 42% | 3 of 4 | 4.4 |
| 9 | Reserva FitnessIs this your business? | 95%: 4 to 25% | 0% | 33% | 0% | 3 of 4 | 4.3 |
| 10 | Academia DelfimIs this your business? | 95%: 3 to 22% | 0% | 0% | 25% | 2 of 4 | 4 |
| 11 | Runner AcademiaAlso written Runner Fitness ClubIs this your business? | 95%: 3 to 22% | 0% | 25% | 0% | 2 of 4 | 4.7 |
| 12 | Upper Sports ClubIs this your business? | 95%: 3 to 22% | 0% | 0% | 25% | 2 of 4 | 5 |
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. 9 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 | Smart Fit100% | Smart Fit100% | Smart Fit100% |
| 2 | Bodytech100% | Bio Ritmo83% | Bodytech100% |
| 3 | Selfit25% | Bodytech75% | Bio Ritmo92% |
| 4 | Cia Athletica25% | Cia Athletica67% | Proforma42% |
| 5 | BlueFit17% | BlueFit58% | BlueFit33% |
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/rio-de-janeiro"><img src="https://aigrow.gg/badges/index/2026-09/gyms/rio-de-janeiro.svg" width="312" height="100" alt="Named by AI assistants: Gyms in Rio de Janeiro, AIGROW AI Visibility Index, September 2026"></a>The questions
Asked word for word, three times each, to every assistant, in Portuguese. 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.
- 1Qual é a melhor academia no Rio de Janeiro?What is the best gym in Rio de Janeiro?
- 2Quero me matricular em uma academia no Rio de Janeiro. Quais você recomenda?I want to join a gym in Rio de Janeiro. Which ones would you recommend?
- 3Qual academia no Rio de Janeiro é boa para iniciantes?Which gym in Rio de Janeiro is good for beginners?
- 4Onde posso encontrar uma academia no Rio de Janeiro com boas aulas coletivas?Where can I find a gym in Rio de Janeiro 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.
Elsewhere in the Index
- Also in Rio de Janeiro
- 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.
Edition September 2026 · published by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0