Lawyers in Brasília that AI assistants recommend

Name: AI assistant recommendations: Lawyers in Brasília, November 2026
Creator: AIGROW
License: https://creativecommons.org/licenses/by/4.0/

SiqueiraCastro is named most, in 22% of 36 answers.

The ranking

AI Recommendation Rate

1SiqueiraCastro22%
95%: 12 to 38%
ChatGPT
17%
Claude
0%
Gemini
50%
Questions
3 of 4
Avg. position
1.5
Named in answers to
- Who is the best lawyer in Brasília?, from Gemini
- I was injured in a car accident in Brasília. Which personal injury lawyer should I call?, from Gemini
- Which law firm in Brasília would you recommend for a small business?, from ChatGPT and Gemini
Also written SiqueiraCastro Advogados
Is this your business?
2TozziniFreire Advogados22%
95%: 12 to 38%
ChatGPT
17%
Claude
0%
Gemini
50%
Questions
2 of 4
Avg. position
2.1
Named in answers to
- Who is the best lawyer in Brasília?, from ChatGPT and Gemini
- Which law firm in Brasília would you recommend for a small business?, from Gemini
Is this your business?
3Nelson Wilians Advogados17%
95%: 8 to 32%
ChatGPT
33%
Claude
0%
Gemini
17%
Questions
3 of 4
Avg. position
2
Named in answers to
- I'm getting divorced in Brasília. Which family lawyer would you recommend?, from ChatGPT
- I was injured in a car accident in Brasília. Which personal injury lawyer should I call?, from Gemini
- Which law firm in Brasília would you recommend for a small business?, from ChatGPT
Is this your business?
4Pinheiro Neto Advogados17%
95%: 8 to 32%
ChatGPT
33%
Claude
0%
Gemini
17%
Questions
2 of 4
Avg. position
2.8
Named in answers to
- Who is the best lawyer in Brasília?, from ChatGPT and Gemini
- Which law firm in Brasília would you recommend for a small business?, from ChatGPT
Is this your business?
5Ibaneis Advocacia14%
95%: 6 to 29%
ChatGPT
0%
Claude
0%
Gemini
42%
Questions
2 of 4
Avg. position
1
Named in answers to
- I'm getting divorced in Brasília. Which family lawyer would you recommend?, from Gemini
- I was injured in a car accident in Brasília. Which personal injury lawyer should I call?, from Gemini
Is this your business?
6BMA Advogados11%
95%: 4 to 25%
ChatGPT
17%
Claude
0%
Gemini
17%
Questions
2 of 4
Avg. position
3
Named in answers to
- Who is the best lawyer in Brasília?, from ChatGPT
- Which law firm in Brasília would you recommend for a small business?, from Gemini
Is this your business?
7Mattos Filho11%
95%: 4 to 25%
ChatGPT
17%
Claude
0%
Gemini
17%
Questions
1 of 4
Avg. position
3
Named in answers to
- Who is the best lawyer in Brasília?, from ChatGPT and Gemini
Also written Mattos Filho Advogados, Mattos Filho, Veiga Filho, Marrey Jr. e Quiroga Advogados
Is this your business?
8Mendes & Mendes Advocacia6%
95%: 2 to 18%
ChatGPT
8%
Claude
0%
Gemini
8%
Questions
2 of 4
Avg. position
1.5
Named in answers to
- I'm getting divorced in Brasília. Which family lawyer would you recommend?, from Gemini
- Which law firm in Brasília would you recommend for a small business?, from ChatGPT
Is this your business?
9Ribeiro & Silva Advocacia6%
95%: 2 to 18%
ChatGPT
17%
Claude
0%
Gemini
0%
Questions
1 of 4
Avg. position
1.5
Named in answers to
- I was injured in a car accident in Brasília. Which personal injury lawyer should I call?, from ChatGPT
Also written Advocacia Ribeiro Silva, Ribeiro & Silva Advocacia de Trânsito
Is this your business?
10Sérgio Merola Advogados Associados6%
95%: 2 to 18%
ChatGPT
17%
Claude
0%
Gemini
0%
Questions
1 of 4
Avg. position
1.5
Named in answers to
- I was injured in a car accident in Brasília. Which personal injury lawyer should I call?, from ChatGPT
Is this your business?
11Motta Fernandes Advogados6%
95%: 2 to 18%
ChatGPT
8%
Claude
0%
Gemini
8%
Questions
2 of 4
Avg. position
2
Named in answers to
- Who is the best lawyer in Brasília?, from ChatGPT
- Which law firm in Brasília would you recommend for a small business?, from Gemini
Is this your business?
12Barroso Fontelles, Barcellos, Mendonça & Associados6%
95%: 2 to 18%
ChatGPT
0%
Claude
0%
Gemini
17%
Questions
1 of 4
Avg. position
3.5
Named in answers to
- Who is the best lawyer in Brasília?, from Gemini
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. 38 more names came up in a single answer and are counted above but not listed.

Lawyers in Brasília: is this your field?

50different names in 36 answers, 38 of them only once. The assistants change their minds from one answer to the next.

Check whether AI names you

Is this your business?

Named on this list? Get the badge for your website and a free scan of who AI assistants recommend to your customers. Use the badge only for a business named here. It records this edition, without verifying ownership or promising future mentions.

AIGROW ScoreIs this your business? See your AIGROW ScoreHow 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 lawyers in Brasília, ChatGPT, Claude and Gemini named SiqueiraCastro most often, in 22% of answers (its AI Recommendation Rate), then TozziniFreire Advogados (22%) and Nelson Wilians Advogados (17%). Across 36 answers they named 50 different businesses, 38 of them only once. Each of four buyer questions was asked three times, in Portuguese, 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.

22% of answers named SiqueiraCastro

Answers: 36
Businesses named: 50
Named only once: 38
Named by 2+ assistants: 8 of 12
Named again on a rerun: 41%

Edition November 2026. Download the data

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	Nelson Wilians Advogados33%	No other name twice	SiqueiraCastro50%
2	Pinheiro Neto Advogados33%		TozziniFreire Advogados50%
3	SiqueiraCastro17%		Ibaneis Advocacia42%
4	TozziniFreire Advogados17%		Nelson Wilians Advogados17%
5	BMA Advogados17%		Pinheiro Neto Advogados17%

Claude named no business in 8 of its 12 answers.

Questions about lawyers in Brasília

How AI assistants recommend lawyers

ChatGPT, Claude and Gemini named SiqueiraCastro most often, in 22% of 36 answers, then TozziniFreire Advogados (22%) and Nelson Wilians Advogados (17%). 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 Nelson Wilians Advogados most often (33% of its answers) and Gemini SiqueiraCastro (50%). Claude named none of the listed businesses. 8 of the 12 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, 41% 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 lawyers, 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 lawyers 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.

Correct or remove a listing

<a href="https://aigrow.gg/index/lawyers/brasilia"><img src="https://aigrow.gg/badges/index/2026-11/lawyers/brasilia.svg" width="312" height="100" alt="Named by AI assistants: Lawyers in Brasília, AIGROW AI Visibility Index, November 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 o melhor advogado em Brasília?Who is the best lawyer in Brasília?
2Estou me divorciando em Brasília. Qual advogado de família você recomenda?I'm getting divorced in Brasília. Which family lawyer would you recommend?
3Fiquei ferido em um acidente de carro em Brasília. Qual advogado especializado em acidentes de trânsito devo procurar?I was injured in a car accident in Brasília. Which personal injury lawyer should I call?
4Qual escritório de advocacia em Brasília você recomendaria para uma pequena empresa?Which law firm in Brasília would you recommend for a small business?

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.