October 2026 AIGROW Index

The brands AI recommends in Portugal

In Portugal, ChatGPT put ActivoBank first in 11 of 12 bank answers. Gemini led with ActivoBank; Claude with ActivoBank.

Study by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0

Categories in Portugal, by whether the three assistants put the same brand first

Same sole leader
3 / 9
Different leaders
5 / 9
Tie or no leader
1 / 9

Four questions combined, without web search. Ties do not count as agreement.

First is the most frequent first name in the four-question sample. Named counts answers mentioning a brand anywhere. An answer may name several brands, so mention counts do not sum to the answer total.

Banks

ChatGPT

ActivoBank11 of 12 first names

Gemini

ActivoBank5 of 12 first names

Claude

ActivoBank3 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT named ActivoBank in 12 of 12 answers about banks.

ChatGPT

Most often named: ActivoBank, in 12 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
ActivoBank1112
Moey!19
Banco CTT05
Millennium bcp03
Caixa Geral de Depósitos02
Revolut02
Crédito Agrícola01

Gemini

Most often named: ActivoBank, in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
ActivoBank512
Moey!211
Banco Best49
Millennium bcp16
Revolut06
Novo Banco05
Banco Big04
Banco BPI04
Santander03
Banco CTT01

Claude

Most often named: ActivoBank, Banco CTT, Revolut. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
ActivoBank34
Banco CTT04
Revolut14
Millennium bcp03
N2603
Novo Banco02
The four questions, as asked
  1. Qual é o melhor banco em Portugal para uma conta à ordem do dia a dia?
  2. Acabei de me mudar e preciso de abrir uma conta bancária em Portugal. Que banco me recomendarias?
  3. Que banco em Portugal cobra as comissões mais baixas?
  4. Que banco em Portugal tem a melhor app?
Read the published Index ranking

Car insurance

ChatGPT

Fidelidade10 of 12 first names

Gemini

Fidelidade9 of 12 first names

Claude

Fidelidade3 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT named Fidelidade in 10 of 12 answers about car insurance.

ChatGPT

Most often named: Fidelidade, in 10 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Fidelidade1010
Ageas Seguros07
Allianz05
OK! Seguros15
Seguro Directo13
Zurich03
Generali Tranquilidade02
LOGO02

Gemini

Most often named: Allianz, Fidelidade. Each appeared in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Allianz012
Fidelidade912
LOGO011
Ageas Seguros09
Zurich09
OK! Seguros06
Generali Tranquilidade02
Seguro Directo22
Médis01
Seguros Continente11

Claude

Most often named: Fidelidade, Zurich. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Fidelidade34
Zurich04
Ageas Seguros03
Generali03
Generali Tranquilidade03
LOGO13
Allianz02
Liberty Seguros02
Açoreana Seguros01
Lusitania01
MAPFRE01
OK! Seguros01
The four questions, as asked
  1. Qual é a melhor seguradora de automóveis em Portugal?
  2. Acabei de comprar o meu primeiro carro em Portugal. Que seguradora me recomendarias?
  3. Que seguradora de automóveis em Portugal oferece a melhor relação qualidade-preço?
  4. Que seguradora de automóveis em Portugal é melhor a tratar sinistros?
Read the published Index ranking

Mobile carriers

ChatGPT

DIGI, MEO4 of 12 first namesTied first

Gemini

MEO6 of 12 first names

Claude

MEO3 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT named DIGI in 9 of 12 answers about mobile carriers.

ChatGPT

Most often named: DIGI, in 9 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
DIGI49
MEO47
Vodafone26
WOO26
Amigo05
NOS03
UZO03

Gemini

Most often named: UZO, WOO. Each appeared in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
UZO512
WOO112
Vodafone011
MEO69
NOS09
NOWO05
Amigo02
DIGI01
VODAFONE YORN01

Claude

Most often named: MEO, NOS, Vodafone. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
MEO34
NOS04
Vodafone04
DIGI02
NOWO12
UZO02
Lobster01
The four questions, as asked
  1. Qual é a melhor operadora de telemóvel em Portugal?
  2. Preciso de um novo tarifário de telemóvel em Portugal. Que operadora me recomendarias?
  3. Que operadora de telemóvel em Portugal tem os tarifários com melhor relação qualidade-preço?
  4. Que operadora de telemóvel tem a melhor cobertura em Portugal?
Read the published Index ranking

Home internet providers

ChatGPT

DIGI7 of 12 first names

Gemini

MEO7 of 12 first names

Claude

MEO3 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT had tied leaders for home internet providers: MEO, Vodafone. Each appeared in 10 of 12 answers.

ChatGPT

Most often named: MEO, Vodafone. Each appeared in 10 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
MEO410
Vodafone110
DIGI78
NOS05
WOO02
Amigo01
LigaT01

Gemini

Most often named: DIGI, MEO, NOS, Vodafone. Each appeared in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
DIGI312
MEO712
NOS012
Vodafone212
NOWO04

Claude

Most often named: MEO, NOS, Vodafone. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
MEO34
NOS04
Vodafone04
NOWO13
The four questions, as asked
  1. Qual é a melhor operadora de internet fixa em Portugal?
  2. Vou mudar-me para um apartamento novo em Portugal. Que operadora de internet devo contratar?
  3. Que operadora em Portugal oferece a melhor relação qualidade-preço em internet rápida para casa?
  4. Que operadora de internet em Portugal é mais fiável para trabalhar a partir de casa?
Read the published Index ranking

Energy suppliers

ChatGPT

Goldenergy5 of 12 first names

Gemini

EDP6 of 12 first names

Claude

Galp2 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT named Goldenergy in 11 of 12 answers about energy suppliers.

ChatGPT

Most often named: Goldenergy, in 11 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Goldenergy511
EDP17
Endesa04
Galp03
Iberdrola13
Plenitude13
Coopérnico22
Luzboa22

Gemini

Most often named: EDP, Goldenergy, Iberdrola. Each appeared in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
EDP612
Goldenergy512
Iberdrola012
Endesa010
Galp08
Plenitude05
Coopérnico11

Claude

Most often named: Coopérnico, EDP, Iberdrola. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Coopérnico04
EDP14
Iberdrola04
Endesa03
Galp23
Goldenergy13
Luzboa02
EndesaX01
The four questions, as asked
  1. Qual é a melhor empresa de eletricidade em Portugal?
  2. Vou mudar-me para uma casa nova em Portugal. Que empresa de eletricidade e gás devo escolher?
  3. Que empresa de energia em Portugal tem as tarifas mais baratas?
  4. Que empresa de energia em Portugal tem o melhor plano de energia renovável?
Read the published Index ranking

Supermarkets

ChatGPT

Continente5 of 12 first names

Gemini

Continente6 of 12 first names

Claude

Mercadona2 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT named Continente in 9 of 12 answers about supermarkets.

ChatGPT

Most often named: Continente, in 9 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Continente59
Mercadona48
Lidl36
Pingo Doce06
ALDI03
Auchan03
El Corte Inglés01
Mercadão01

Gemini

Most often named: Auchan, Continente, Pingo Doce. Each appeared in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Auchan012
Continente612
Pingo Doce312
Mercadona18
El Corte Inglés26
Lidl06
ALDI03
Intermarché03
Minipreço01

Claude

Most often named: Continente, Pingo Doce. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Continente14
Pingo Doce04
Auchan03
Mercadona23
El Corte Inglés12
Lidl02
ALDI01
Mercados Municipais01
Minipreço01
The four questions, as asked
  1. Qual é a melhor cadeia de supermercados em Portugal?
  2. Que supermercado em Portugal tem os preços mais baixos para as compras da semana?
  3. Que cadeia de supermercados em Portugal tem os melhores produtos frescos?
  4. Que supermercado em Portugal tem o melhor serviço de entrega de compras online?
Read the published Index ranking

Car brands

ChatGPT

Toyota6 of 12 first names

Gemini

Toyota6 of 12 first names

Claude

Toyota2 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT had tied leaders for car brands: Hyundai, Toyota. Each appeared in 9 of 12 answers.

ChatGPT

Most often named: Hyundai, Toyota. Each appeared in 9 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Hyundai09
Toyota69
Kia38
Skoda08
Dacia36
Honda03
Tesla03
Renault01

Gemini

Most often named: Kia, in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Kia012
Hyundai010
Toyota69
Volvo09
BMW06
Skoda06
Dacia34
Renault04
Tesla34
Honda03
Peugeot03
Porsche03
Volkswagen03
Mazda02
Audi01

Claude

Most often named: Hyundai, Kia. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Hyundai04
Kia04
Dacia13
Toyota23
BMW02
Skoda02
Volkswagen02
BYD01
Honda01
Mercedes-Benz01
Peugeot01
Porsche01
Renault01
Tesla11
The four questions, as asked
  1. Que marca de automóveis me recomendarias comprar em Portugal?
  2. Quero comprar um carro familiar fiável em Portugal. Que marca devo escolher?
  3. Que marca de automóveis oferece a melhor relação qualidade-preço em Portugal?
  4. Que marca faz o melhor carro elétrico que se pode comprar em Portugal?
Read the published Index ranking

Online brokers

ChatGPT

XTB4 of 12 first names

Gemini

DEGIRO12 of 12 first names

Claude

Trading 2122 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT had tied leaders for online brokers: DEGIRO, XTB. Each appeared in 11 of 12 answers.

ChatGPT

Most often named: DEGIRO, XTB. Each appeared in 11 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
DEGIRO211
XTB411
Interactive Brokers25
Trading 21234
Trade Republic03
Banco Invest12
ActivoBank01

Gemini

Most often named: DEGIRO, Interactive Brokers, XTB. Each appeared in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
DEGIRO1212
Interactive Brokers012
XTB012
Trading 21206
Banco Invest05
Banco Carregosa01

Claude

Most often named: DEGIRO, XTB. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
DEGIRO14
XTB14
Interactive Brokers03
Trading 21223
Banco Best01
Banco Carregosa01
Trade Republic01
The four questions, as asked
  1. Qual é a melhor corretora online para investir em Portugal?
  2. Quero começar a investir em ETFs em Portugal. Que app de investimento me recomendarias?
  3. Que corretora online em Portugal tem as comissões mais baixas?
  4. Que plataforma de investimento em Portugal é melhor para principiantes?
Read the published Index ranking

Electronics retailers

ChatGPT

PCDIGA5 of 12 first names

Gemini

PCDIGA6 of 12 first names

Claude

Worten4 of 4 first names

Mentions, every brand and the four questions
In Portugal, ChatGPT named Worten in 11 of 12 answers about electronics retailers.

ChatGPT

Most often named: Worten, in 11 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Worten411
Fnac08
PCDIGA58
Globaldata06
Radio Popular03
Amazon11
Castro Electrónica11
El Corte Inglés11

Gemini

Most often named: Worten, in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Worten312
Fnac011
Globaldata010
PCDIGA610
Radio Popular07
Amazon14
PCComponentes22
Switch Technology01

Claude

Most often named: Fnac, MediaMarkt, Worten. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Fnac04
MediaMarkt04
Worten44
PCDIGA03
Radio Popular02
Amazon01
Chip701
El Corte Inglés01
The four questions, as asked
  1. Qual é a melhor loja de eletrónica em Portugal?
  2. Quero comprar um portátil novo em Portugal. Em que loja me recomendarias comprá-lo?
  3. Que loja de eletrónica em Portugal tem os melhores preços?
  4. Que loja de eletrónica em Portugal presta o melhor apoio ao cliente e facilita mais as devoluções?
Read the published Index ranking

Press kit

Use the country URL for local results and the DOI for the frozen October Index dataset. The study files below are derived from that edition; they do not have a separate DOI.

Successful answers
5,040
Countries
20
Categories
9
Guglielmo Paesano (2026). The brands AI recommends in 20 countries. AIGROW. October 2026 Index data. https://aigrow.gg/research/ai-brands-2026/portugal DOI 10.5281/zenodo.23188442

Download a country chart

Preview the chartFirst brands named by ChatGPT, Gemini and Claude in Portugal, October 2026
Image embed code

What we measured

A frozen sample of consumer-brand answers from the October AIGROW Index, not a survey of buyers and not an evaluation of the brands.

Collected from 2026-10-05 to 2026-10-06: 5,040 successful answers across 20 countries and 9 categories. Each cell combines four locally worded questions. ChatGPT and Gemini answered each question three times; Claude once. This study excludes web-search answers and Grok.

Collection, counting and model details

The writer reads the already published October pages and the latest stored answer for each probe up to 2026-10-06T23:59:59.999Z. It checks every published brand count against that page before writing. No new questions, model calls or Index aggregation are run.

A brand counts once per answer, using the Index spellings and stored aliases. First means the first distinct name in the extracted list. Names are not newly merged across countries; a local subsidiary or differently named brand may remain separate. Unlike the public rankings, the downloadable study retains names seen only once.

There were 27 successful answers with no brand. They remain in the denominators. Failed calls are excluded. A tie is reported as a tie, and counts are descriptive: repeated answers are not independent consumer observations.

ChatGPT
gpt-6-sol
Gemini
google/gemini-3.1-flash-lite
Claude
claude-sonnet-5

ChatGPT and Claude were collected through subscription command-line tools; Gemini through an API gateway. The country was named in the local-language prompt. We did not test geolocated public accounts. Model updates, personalization, the wording of a question and web search can change the answer.

Read the full Index methodology

Questions about the study

Does first place mean the best brand?

No. First means the first brand in the extracted list of an answer. It measures ordering in this sample, not product quality, suitability, market share or a promise of a future recommendation.

Why do the assistants have different answer counts?

Each country and category has four questions. ChatGPT and Gemini answered each three times, giving twelve answers each. Claude answered once, giving four. Pooled totals therefore give ChatGPT and Gemini more weight; compare assistants separately in the country tables.

Can I reuse the charts and data?

Yes, under CC BY 4.0. Credit AIGROW, link to this study and include the October dataset DOI. Each country page offers a chart and an image embed code with a link back. The CSV includes every counted brand, including brands named only once.

Do these answers represent the public chatbot apps today?

They are a frozen October 2026 sample from specific models and collection routes, without web search. Answers in a public app can differ with its model, location, personalization, prompt and date. We did not survey consumers or measure purchases.

Check what AI can read about your business.

The free scan checks your website for signals that help assistants understand it. Your results are separate from this consumer-brand study.