Architects in Stuttgart that AI assistants recommend
We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for architects in Stuttgart, three times each, in German, 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
- 29
- Named only once
- 11
- Named by 2+ assistants
- 9 of 18
- Named again on a rerun
- 51%
Edition September 2026. Download the data
Asked for architects in Stuttgart, ChatGPT, Claude and Gemini most often named Behnisch Architekten (58% of answers), Lederer Ragnarsdóttir Oei (50%) and Wulf Architekten (44%). Across 36 answers they named 29 different businesses, 11 of them only once. Each of four buyer questions was asked three times, in German, 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 | Behnisch ArchitektenIs this your business? | 95%: 42 to 73% | 33% | 42% | 100% | 4 of 4 | 2.1 |
| 2 | Lederer Ragnarsdóttir OeiAlso written LRO Lederer Ragnarsdóttir OeiIs this your business? | 95%: 35 to 66% | 25% | 25% | 100% | 4 of 4 | 1.8 |
| 3 | Wulf ArchitektenAlso written wulf architektenIs this your business? | 95%: 30 to 60% | 25% | 25% | 83% | 4 of 4 | 2.3 |
| 4 | Blocher PartnersAlso written blocher partnersIs this your business? | 95%: 18 to 47% | 33% | 0% | 58% | 3 of 4 | 3.2 |
| 5 | kauffmann theilig partnerAlso written Kauffmann Theilig & PartnerIs this your business? | 95%: 10 to 35% | 0% | 17% | 42% | 3 of 4 | 4.7 |
| 6 | Fuchs Wacker ArchitektenIs this your business? | 95%: 6 to 29% | 33% | 0% | 8% | 3 of 4 | 2.2 |
| 7 | AllmannwappnerIs this your business? | 95%: 6 to 29% | 0% | 0% | 42% | 3 of 4 | 5.2 |
| 8 | Bottega + Ehrhardt ArchitektenIs this your business? | 95%: 4 to 25% | 33% | 0% | 0% | 2 of 4 | 2 |
| 9 | asp ArchitektenAlso written ASP Architekten, ASP Architekten StuttgartIs this your business? | 95%: 4 to 25% | 17% | 17% | 0% | 1 of 4 | 3.3 |
| 10 | Hammeskrause ArchitektenIs this your business? | 95%: 4 to 25% | 0% | 0% | 33% | 3 of 4 | 4.8 |
| 11 | Ippolito Fleitz GroupIs this your business? | 95%: 3 to 22% | 25% | 0% | 0% | 1 of 4 | 2.7 |
| 12 | Steimle ArchitektenIs this your business? | 95%: 3 to 22% | 17% | 8% | 0% | 2 of 4 | 3 |
| 13 | Auer WeberAlso written Auer Weber ArchitektenIs this your business? | 95%: 3 to 22% | 0% | 25% | 0% | 1 of 4 | 4 |
| 14 | Ackermann ArchitektenIs this your business? | 95%: 3 to 22% | 0% | 0% | 25% | 2 of 4 | 6.7 |
| 15 | wittfoht architektenIs this your business? | 95%: 2 to 18% | 0% | 0% | 17% | 2 of 4 | 1 |
| 16 | Alexander Brenner ArchitektenIs this your business? | 95%: 2 to 18% | 17% | 0% | 0% | 2 of 4 | 1.5 |
| 17 | Hascher JehleAlso written Hascher Jehle Architektur, Hascher Jehle DesignIs this your business? | 95%: 2 to 18% | 0% | 8% | 8% | 1 of 4 | 4 |
| 18 | Henn ArchitektenIs this your business? | 95%: 2 to 18% | 0% | 0% | 17% | 1 of 4 | 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. 11 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 | Behnisch Architekten33% | Behnisch Architekten42% | Behnisch Architekten100% |
| 2 | Blocher Partners33% | Lederer Ragnarsdóttir Oei25% | Lederer Ragnarsdóttir Oei100% |
| 3 | Fuchs Wacker Architekten33% | Wulf Architekten25% | Wulf Architekten83% |
| 4 | Bottega + Ehrhardt Architekten33% | Auer Weber25% | Blocher Partners58% |
| 5 | Lederer Ragnarsdóttir Oei25% | kauffmann theilig partner17% | kauffmann theilig partner42% |
Claude named no business in 7 of its 12 answers.
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/architects/stuttgart"><img src="https://aigrow.gg/badges/index/2026-09/architects/stuttgart.svg" width="312" height="100" alt="Named by AI assistants: Architects in Stuttgart, AIGROW AI Visibility Index, September 2026"></a>The questions
Asked word for word, three times each, to every assistant, in German. 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.
- 1Wer ist der beste Architekt in Stuttgart?Who is the best architect in Stuttgart?
- 2Ich möchte mein Haus in Stuttgart renovieren. Welchen Architekten würdest du empfehlen?I want to renovate my house in Stuttgart. Which architect would you recommend?
- 3Welches Architekturbüro in Stuttgart ist gut darin, neue Häuser zu entwerfen?Which architecture firm in Stuttgart is good at designing new homes?
- 4Welchen Architekten in Stuttgart würdest du für die Renovierung einer Wohnung empfehlen?Which architect in Stuttgart would you recommend for an apartment renovation?
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 Germany. From the AI Source Map: 8 answers.
- wikipedia.org
- Read in 88% of the answers
- baunetz-architekten.de
- Read in 38% of the answers
- realestatearchitectureawards.com
- Read in 25% of the answers
Elsewhere in the Index
- Also in Stuttgart
- DentistsLawyersAccountantsPlumbersGymsReal estate agencies
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