Gyms in Chicago that AI assistants recommend

Equinox is named most, in 69% of 36 answers.

Gyms in Chicago named by AI assistants, November 2026

  1. 1Equinox69%

    95%: 53 to 82%

    ChatGPT
    8%
    Claude
    100%
    Gemini
    100%
    Questions
    4 of 4
    Avg. position
    1.1

    Named in answers to

    • What is the best gym in Chicago?, from Claude and Gemini
    • I want to join a gym in Chicago. Which ones would you recommend?, from Claude and Gemini
    • Which gym in Chicago is good for beginners?, from Claude and Gemini
    • Where can I find a gym in Chicago with good group classes?, from ChatGPT, Claude and Gemini

    Also written Equinox Lincoln Park, Equinox Gold Coast, Equinox Chicago

    Is this your business?
  2. 2East Bank Club67%

    95%: 50 to 80%

    ChatGPT
    83%
    Claude
    92%
    Gemini
    25%
    Questions
    4 of 4
    Avg. position
    2.9

    Named in answers to

    • What is the best gym in Chicago?, from ChatGPT, Claude and Gemini
    • I want to join a gym in Chicago. Which ones would you recommend?, from ChatGPT, Claude and Gemini
    • Which gym in Chicago is good for beginners?, from ChatGPT and Claude
    • Where can I find a gym in Chicago with good group classes?, from ChatGPT and Claude
    Is this your business?
  3. 3Fitness Formula Clubs56%

    95%: 40 to 71%

    ChatGPT
    100%
    Claude
    58%
    Gemini
    8%
    Questions
    4 of 4
    Avg. position
    4.3

    Named in answers to

    • What is the best gym in Chicago?, from ChatGPT, Claude and Gemini
    • I want to join a gym in Chicago. Which ones would you recommend?, from ChatGPT and Claude
    • Which gym in Chicago is good for beginners?, from ChatGPT and Claude
    • Where can I find a gym in Chicago with good group classes?, from ChatGPT and Claude

    Also written FFC Gold Coast, FFC, FFC Union Station

    Is this your business?
  4. 4Chicago Athletic Clubs50%

    95%: 35 to 66%

    ChatGPT
    50%
    Claude
    100%
    Gemini
    0%
    Questions
    4 of 4
    Avg. position
    3.4

    Named in answers to

    • What is the best gym in Chicago?, from Claude
    • I want to join a gym in Chicago. Which ones would you recommend?, from ChatGPT and Claude
    • Which gym in Chicago is good for beginners?, from ChatGPT and Claude
    • Where can I find a gym in Chicago with good group classes?, from ChatGPT and Claude

    Also written Lincoln Park Athletic Club, East Lakeview Athletic Club

    Is this your business?
  5. 5Life Time39%

    95%: 25 to 55%

    ChatGPT
    33%
    Claude
    83%
    Gemini
    0%
    Questions
    4 of 4
    Avg. position
    2.6

    Named in answers to

    • What is the best gym in Chicago?, from Claude
    • I want to join a gym in Chicago. Which ones would you recommend?, from ChatGPT and Claude
    • Which gym in Chicago is good for beginners?, from Claude
    • Where can I find a gym in Chicago with good group classes?, from ChatGPT and Claude

    Also written Life Time Chicago, Lifetime Fitness, Life Time River North, Lifetime Fitness Chicago

    Is this your business?
  6. 6Planet Fitness31%

    95%: 18 to 47%

    ChatGPT
    25%
    Claude
    50%
    Gemini
    17%
    Questions
    2 of 4
    Avg. position
    4

    Named in answers to

    • I want to join a gym in Chicago. Which ones would you recommend?, from ChatGPT and Claude
    • Which gym in Chicago is good for beginners?, from ChatGPT, Claude and Gemini
    Is this your business?
  7. 7Lakeshore Sport & Fitness28%

    95%: 16 to 44%

    ChatGPT
    50%
    Claude
    8%
    Gemini
    25%
    Questions
    4 of 4
    Avg. position
    2.2

    Named in answers to

    • What is the best gym in Chicago?, from ChatGPT and Gemini
    • I want to join a gym in Chicago. Which ones would you recommend?, from ChatGPT and Gemini
    • Which gym in Chicago is good for beginners?, from ChatGPT
    • Where can I find a gym in Chicago with good group classes?, from ChatGPT and Claude
    Is this your business?
  8. 8Studio Three22%

    95%: 12 to 38%

    ChatGPT
    8%
    Claude
    33%
    Gemini
    25%
    Questions
    2 of 4
    Avg. position
    4.9

    Named in answers to

    • What is the best gym in Chicago?, from Claude
    • Where can I find a gym in Chicago with good group classes?, from ChatGPT, Claude and Gemini

    Also written Studio Three Chicago

    Is this your business?
  9. 9F45 Training19%

    95%: 10 to 35%

    ChatGPT
    0%
    Claude
    0%
    Gemini
    58%
    Questions
    4 of 4
    Avg. position
    3.4

    Named in answers to

    • What is the best gym in Chicago?, from Gemini
    • I want to join a gym in Chicago. Which ones would you recommend?, from Gemini
    • Which gym in Chicago is good for beginners?, from Gemini
    • Where can I find a gym in Chicago with good group classes?, from Gemini
    Is this your business?
  10. 10Midtown Athletic Club Chicago19%

    95%: 10 to 35%

    ChatGPT
    58%
    Claude
    0%
    Gemini
    0%
    Questions
    4 of 4
    Avg. position
    3.7

    Named in answers to

    • What is the best gym in Chicago?, from ChatGPT
    • I want to join a gym in Chicago. Which ones would you recommend?, from ChatGPT
    • Which gym in Chicago is good for beginners?, from ChatGPT
    • Where can I find a gym in Chicago with good group classes?, from ChatGPT
    Is this your business?
  11. 11XSport Fitness19%

    95%: 10 to 35%

    ChatGPT
    17%
    Claude
    42%
    Gemini
    0%
    Questions
    3 of 4
    Avg. position
    5.9

    Named in answers to

    • What is the best gym in Chicago?, from Claude
    • I want to join a gym in Chicago. Which ones would you recommend?, from ChatGPT and Claude
    • Which gym in Chicago is good for beginners?, from ChatGPT and Claude

    Also written Xsport Fitness, XSport Fitness – Chicago Loop

    Is this your business?
  12. 12LA Fitness17%

    95%: 8 to 32%

    ChatGPT
    8%
    Claude
    0%
    Gemini
    42%
    Questions
    2 of 4
    Avg. position
    2.8

    Named in answers to

    • I want to join a gym in Chicago. Which ones would you recommend?, from Gemini
    • Which gym in Chicago is good for beginners?, from ChatGPT and Gemini

    Also written LA Fitness Chicago – Lincoln Park

    Is this your business?
  13. 13Crunch Fitness14%

    95%: 6 to 29%

    ChatGPT
    0%
    Claude
    42%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    3.6

    Named in answers to

    • I want to join a gym in Chicago. Which ones would you recommend?, from Claude
    • Which gym in Chicago is good for beginners?, from Claude
    Is this your business?
  14. 14Barry's Chicago11%

    95%: 4 to 25%

    ChatGPT
    8%
    Claude
    0%
    Gemini
    25%
    Questions
    1 of 4
    Avg. position
    3.3

    Named in answers to

    • Where can I find a gym in Chicago with good group classes?, from ChatGPT and Gemini
    Is this your business?
  15. 15Quads Gym8%

    95%: 3 to 22%

    ChatGPT
    0%
    Claude
    0%
    Gemini
    25%
    Questions
    1 of 4
    Avg. position
    3

    Named in answers to

    • What is the best gym in Chicago?, from Gemini
    Is this your business?
  16. 16CorePower Yoga8%

    95%: 3 to 22%

    ChatGPT
    0%
    Claude
    8%
    Gemini
    17%
    Questions
    1 of 4
    Avg. position
    4

    Named in answers to

    • Where can I find a gym in Chicago with good group classes?, from Claude and Gemini
    Is this your business?
  17. 17Orangetheory Fitness8%

    95%: 3 to 22%

    ChatGPT
    0%
    Claude
    25%
    Gemini
    0%
    Questions
    2 of 4
    Avg. position
    6.3

    Named in answers to

    • I want to join a gym in Chicago. Which ones would you recommend?, from Claude
    • Where can I find a gym in Chicago with good group classes?, from Claude
    Is this your business?
  18. 18CrossTown Fitness6%

    95%: 2 to 18%

    ChatGPT
    0%
    Claude
    17%
    Gemini
    0%
    Questions
    1 of 4
    Avg. position
    5

    Named in answers to

    • Where can I find a gym in Chicago with good group classes?, from Claude
    Is this your business?

Open a row to see each assistant's share of its 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. 10 more names came up in a single answer and are counted above but not listed.

Gyms in Chicago: is this your field?

28different names in 36 answers, 10 of them only once. The assistants change their minds from one answer to the next.

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How the AIGROW Score is measured

No business can pay to appear in the Index, rise in it or be removed from it. How the Index stays neutral

AI Visibility Index · November 2026

Asked about gyms in Chicago, ChatGPT, Claude and Gemini named Equinox most often, in 69% of answers (its AI Recommendation Rate), then East Bank Club (67%) and Fitness Formula Clubs (56%). Across 36 answers they named 28 different businesses, 10 of them only once. Each of four buyer questions was asked three times, in English, in November 2026.

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.

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

Gyms · Chicago

69% of answers named Equinox

Answers
36
Businesses named
28
Named only once
10
Named by 2+ assistants
12 of 18
Named again on a rerun
63%

Edition November 2026. Download the data

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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
1Fitness Formula Clubs100%Equinox100%Equinox100%
2East Bank Club83%Chicago Athletic Clubs100%F45 Training58%
3Midtown Athletic Club Chicago58%East Bank Club92%LA Fitness42%
4Chicago Athletic Clubs50%Life Time83%East Bank Club25%
5Lakeshore Sport & Fitness50%Fitness Formula Clubs58%Lakeshore Sport & Fitness25%

Questions about gyms in Chicago

ChatGPT, Claude and Gemini named Equinox most often, in 69% of 36 answers, then East Bank Club (67%) and Fitness Formula Clubs (56%). The names come from what the assistants answered to four buyer questions in November 2026; we have not checked that any of them is good, open or real.

Not always. ChatGPT named Fitness Formula Clubs most often (100% of its answers), Claude Equinox (100%) and Gemini Equinox (100%). 12 of the 18 listed businesses were named by two or more of them.

Each question was asked three times. Of the names an assistant gave for a question, 63% came back in two or more of those runs; the rest came up once. The 95% range beside each rate in the ranking shows how far it could move by chance.

Run the free checker: it asks ChatGPT, Claude, Gemini and Grok two of the Index questions for gyms, with the category and the place already filled in, and shows every answer word for word. About 30 seconds, no sign-up. The page on how AI assistants recommend gyms shows what an owner can work on. Nothing can guarantee that an assistant names you.

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.

Named by AI assistants: Gyms in Chicago, AIGROW AI Visibility Index, November 2026
<a href="https://aigrow.gg/index/gyms/chicago"><img src="https://aigrow.gg/badges/index/2026-11/gyms/chicago.svg" width="312" height="100" alt="Named by AI assistants: Gyms in Chicago, AIGROW AI Visibility Index, November 2026"></a>

The questions

Asked word for word, three times each, to every assistant. 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. 1What is the best gym in Chicago?
  2. 2I want to join a gym in Chicago. Which ones would you recommend?
  3. 3Which gym in Chicago is good for beginners?
  4. 4Where can I find a gym in Chicago 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 United States. From the AI Source Map: 11 answers.

reddit.com
Read in 91% of the answers
wikipedia.org
Read in 73% of the answers
equinox.com
Read in 64% of the answers

AI Visibility Index

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Gyms, Chicago: see whether the assistants name you, or someone else.

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