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AI Visibility Index · September 2026

Architects in Porto that AI assistants recommend

We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for architects in Porto, three times each, in Portuguese, 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.

Architects · Porto
56%of answers named Fala Atelier
Answers
36
Businesses named
34
Named only once
15
Named by 2+ assistants
8 of 19
Named again on a rerun
51%

Edition September 2026. Download the data

Asked for architects in Porto, ChatGPT, Claude and Gemini most often named Fala Atelier (56% of answers), OODA (56%) and depA (39%). Across 36 answers they named 34 different businesses, 15 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.

Architects in Porto named by AI assistants, September 2026
#BusinessAI Recommendation RateChatGPTClaudeGeminiQuestionsAvg. position
1Fala AtelierAlso written fala atelierIs this your business?56%95%: 40 to 71%58%8%100%4 of 41.8
2OODAIs this your business?56%95%: 40 to 71%42%42%83%4 of 44
3depAAlso written DepA Architects, depA architects, Arquitetos Associados, DepA Arquitectos, DepA ArquitetosIs this your business?39%95%: 25 to 55%17%0%100%4 of 43.4
4Álvaro Siza VieiraAlso written Álvaro Siza Vieira - AtelierIs this your business?25%95%: 14 to 41%17%33%25%2 of 41.4
5Souto de MouraAlso written Eduardo Souto de Moura, Souto de Moura Arquitectos, Souto Moura ArquitectosIs this your business?25%95%: 14 to 41%17%33%25%2 of 41.6
6Nuno Brandão CostaAlso written Nuno Brandão Costa ArquitectosIs this your business?22%95%: 12 to 38%25%0%42%3 of 44.3
7Aires MateusAlso written Aires Mateus & AssociadosIs this your business?19%95%: 10 to 35%0%0%58%3 of 42.1
8Menos é Mais ArquitectosIs this your business?19%95%: 10 to 35%0%25%33%3 of 45.1
9Pedra LíquidaIs this your business?14%95%: 6 to 29%0%42%0%2 of 45.2
10Correia/Ragazzi ArquitectosIs this your business?11%95%: 4 to 25%8%25%0%1 of 43
11Aurora ArquitectosIs this your business?11%95%: 4 to 25%0%0%33%2 of 44.8
12SummaryAlso written SUMMARYIs this your business?11%95%: 4 to 25%0%0%33%3 of 45.5
13FAHR 021.3Is this your business?8%95%: 3 to 22%25%0%0%2 of 41.7
14Rui Vieira Campos ArquitectosAlso written Rui Vieira Campos - ArquitectosIs this your business?8%95%: 3 to 22%0%25%0%1 of 43.3
15Paulo MerliniAlso written Paulo Merlini Architects, Paulo Merlini ArquitectosIs this your business?6%95%: 2 to 18%17%0%0%2 of 42
16Paulo Moreira ArchitecturesIs this your business?6%95%: 2 to 18%17%0%0%2 of 42
17Arquitectos AssociadosIs this your business?6%95%: 2 to 18%0%0%17%2 of 42.5
18COR ArquitectosIs this your business?6%95%: 2 to 18%0%0%17%1 of 44.5
19Nuno ValentimAlso written Atelier Nuno Valentim, Nuno Valentim ArquitectoIs this your business?6%95%: 2 to 18%0%17%0%2 of 46.5

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. 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
1Fala Atelier58%OODA42%Fala Atelier100%
2OODA42%Pedra Líquida42%depA100%
3Nuno Brandão Costa25%Álvaro Siza Vieira33%OODA83%
4FAHR 021.325%Souto de Moura33%Aires Mateus58%
5depA17%Menos é Mais Arquitectos25%Nuno Brandão Costa42%

Claude named no business in 6 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.

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

  1. 1Quem é o melhor arquiteto no Porto?Who is the best architect in Porto?
  2. 2Quero renovar a minha casa no Porto. Que arquiteto me recomendas?I want to renovate my house in Porto. Which architect would you recommend?
  3. 3Que gabinete de arquitetura no Porto é bom a projetar casas novas?Which architecture firm in Porto is good at designing new homes?
  4. 4Que arquiteto no Porto me recomendas para renovar um apartamento?Which architect in Porto would you recommend for an apartment renovation?

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.

Elsewhere in the Index

Architects elsewhere
LisbonBelo HorizonteRio de JaneiroSão PauloAarhusAmsterdam
Also in Porto
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.

Run the free AI scanRead the method

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