October 2026 AIGROW Index

The brands AI recommends in Spain

In Spain, ChatGPT put BBVA first in 6 of 12 bank answers. Gemini led with N26; Claude with ING.

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

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

Same sole leader
3 / 9
Different leaders
4 / 9
Tie or no leader
2 / 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

BBVA6 of 12 first names

Gemini

N267 of 12 first names

Claude

ING2 of 4 first names

Mentions, every brand and the four questions
In Spain, ChatGPT named BBVA in 10 of 12 answers about banks.

ChatGPT

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

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
BBVA610
Banco Santander28
ING06
CaixaBank05
Openbank35
N2604
imagin12

Gemini

Most often named: BBVA, Revolut. Each appeared in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
BBVA512
Revolut012
N26711
Banco Santander08
ING07
CaixaBank06
Openbank04
Banco Sabadell03

Claude

Most often named: ING, Revolut. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
ING24
Revolut04
BBVA03
CaixaBank03
Openbank13
EVO Banco02
N2612
Banco Mediolanum01
Banco Santander01
The four questions, as asked
  1. ¿Cuál es el mejor banco en España para una cuenta corriente de uso diario?
  2. Acabo de mudarme a España y necesito abrir una cuenta bancaria. ¿Qué banco me recomendarías?
  3. ¿Qué banco en España cobra menos comisiones?
  4. ¿Qué banco en España tiene la mejor app bancaria?
Read the published Index ranking

Car insurance

ChatGPT

Mapfre6 of 12 first names

Gemini

Mapfre9 of 12 first names

Claude

Mutua Madrileña3 of 4 first names

Mentions, every brand and the four questions
In Spain, ChatGPT had tied leaders for car insurance: Mapfre, Mutua Madrileña. Each appeared in 12 of 12 answers.

ChatGPT

Most often named: Mapfre, Mutua Madrileña. Each appeared in 12 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Mapfre612
Mutua Madrileña512
Línea Directa19
Occident01
Reale Seguros01

Gemini

Most often named: Allianz, AXA, Línea Directa, Mapfre, Mutua Madrileña. Each appeared in 12 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Allianz012
AXA012
Línea Directa312
Mapfre912
Mutua Madrileña012
Pelayo06
Direct Seguros01

Claude

Most often named: Línea Directa, Mapfre, Mutua Madrileña. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Línea Directa04
Mapfre04
Mutua Madrileña34
Pelayo03
Verti13
Allianz02
AXA02
Direct Seguros02
Fénix Directo02
Generali01
Génesis Seguros01
The four questions, as asked
  1. ¿Cuál es la mejor aseguradora de coche en España?
  2. Acabo de comprarme mi primer coche en España. ¿Qué aseguradora me recomendarías?
  3. ¿Qué aseguradora de coche en España ofrece la mejor relación calidad-precio?
  4. ¿Qué aseguradora de coche en España gestiona mejor los siniestros?
Read the published Index ranking

Mobile carriers

ChatGPT

DIGI, Movistar5 of 12 first namesTied first

Gemini

Movistar6 of 12 first names

Claude

DIGI, Movistar2 of 4 first namesTied first

Mentions, every brand and the four questions
In Spain, 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
DIGI59
O228
Movistar56
Lowi04
Orange04
Pepephone04
Vodafone04
Simyo01

Gemini

Most often named: DIGI, O2, Pepephone. Each appeared in 9 of 12 answers.

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
DIGI39
O239
Pepephone09
Movistar67
Simyo07
Lowi06
Orange06
Vodafone06
Yoigo03
Finetwork02

Claude

Most often named: DIGI, Movistar, O2, Vodafone. Each appeared in 3 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
DIGI23
Movistar23
O203
Vodafone03
Lowi02
MásMóvil02
Orange02
Pepephone02
Yoigo02
Finetwork01
Simyo01
The four questions, as asked
  1. ¿Cuál es el mejor operador de telefonía móvil en España?
  2. Necesito una nueva tarifa de móvil en España. ¿Qué operador me recomendarías?
  3. ¿Qué operador móvil en España tiene las tarifas con mejor relación calidad-precio?
  4. ¿Qué operador móvil tiene la mejor cobertura en España?
Read the published Index ranking

Home internet providers

ChatGPT

Digi5 of 12 first names

Gemini

Movistar8 of 12 first names

Claude

Movistar3 of 4 first names

Mentions, every brand and the four questions
In Spain, ChatGPT named O2 in 12 of 12 answers about home internet providers.

ChatGPT

Most often named: O2, in 12 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
O2412
Digi59
Movistar37
Pepephone04
Lowi03
Orange03

Gemini

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

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Digi412
O2010
Movistar89
Orange09
Vodafone09
Lowi03
Simyo03
Pepephone02
MásMóvil01

Claude

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

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Movistar34
Vodafone04
Digi13
O203
Orange03
MásMóvil02
Adamo01
Jazztel01
MásMóvil / Yoigo01
MasOrange01
The four questions, as asked
  1. ¿Cuál es el mejor proveedor de internet para casa en España?
  2. Me voy a mudar a un piso nuevo en España. ¿Con qué proveedor de internet debería contratar el servicio?
  3. ¿Qué proveedor de internet en España ofrece la mejor relación calidad-precio para tener internet rápido en casa?
  4. ¿Qué proveedor de internet en España es el más fiable para trabajar desde casa?
Read the published Index ranking

Energy suppliers

ChatGPT

Octopus Energy11 of 12 first names

Gemini

Naturgy7 of 12 first names

Claude

Holaluz2 of 4 first names

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

ChatGPT

Most often named: Octopus Energy, in 11 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Octopus Energy1111
Holaluz04
Naturgy14
TotalEnergies04
Repsol03
Som Energia03
Gana Energía02
Lucera02
Endesa01
Iberdrola01
Plenitude01

Gemini

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

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Naturgy712
Endesa011
Holaluz010
TotalEnergies09
Iberdrola08
Gana Energía07
Som Energia33
Energía XXI12
Octopus Energy12
Pepeenergy02
Repsol02
Curenergía01
Lucera01

Claude

Most often named: Holaluz, Octopus Energy. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Holaluz24
Octopus Energy04
Podo03
Repsol13
Factor Energía02
Naturgy02
Som Energia02
EDP01
Iberdrola01
Lucera11
Pepeenergy01
TotalEnergies01
The four questions, as asked
  1. ¿Cuál es la mejor comercializadora de luz en España?
  2. Me voy a mudar a una casa nueva en España. ¿Qué compañía de luz y gas debería elegir?
  3. ¿Qué comercializadora de energía en España tiene las tarifas más baratas?
  4. ¿Qué comercializadora de energía en España tiene la mejor tarifa de energía renovable?
Read the published Index ranking

Supermarkets

ChatGPT

Mercadona7 of 12 first names

Gemini

Mercadona6 of 12 first names

Claude

Mercadona4 of 4 first names

Mentions, every brand and the four questions
In Spain, ChatGPT named Mercadona in 8 of 12 answers about supermarkets.

ChatGPT

Most often named: Mercadona, in 8 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Mercadona78
Carrefour07
Alcampo36
Lidl16
El Corte Inglés02
Aldi01
Ametller Origen11
Family Cash01
Supeco01

Gemini

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

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Mercadona612
Consum08
El Corte Inglés38
Aldi06
Carrefour06
Lidl06
Ahorramas05
Alcampo35
Eroski05
Dia04

Claude

Most often named: Carrefour, Mercadona. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Carrefour04
Mercadona44
Alcampo03
Consum02
Dia02
El Corte Inglés02
Lidl02
El Corte Inglés / Supercor01
Eroski01
Fruterías y mercados municipales de barrio01
The four questions, as asked
  1. ¿Cuál es la mejor cadena de supermercados en España?
  2. ¿Qué supermercado en España es el más barato para hacer la compra semanal?
  3. ¿Qué cadena de supermercados en España tiene las mejores frutas y verduras frescas?
  4. ¿Qué supermercado en España tiene el mejor servicio de compra online a domicilio?
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 Spain, ChatGPT named Kia in 11 of 12 answers about car brands.

ChatGPT

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

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Kia111
Toyota69
Skoda07
Hyundai06
Dacia34
Honda03
SEAT03
Tesla22

Gemini

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

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
Hyundai012
Kia012
Skoda09
Toyota69
Dacia36
Mazda04
MG04
BMW03
Honda03
Porsche03
SEAT03
Tesla33
Volkswagen03
Volvo03
Peugeot02

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
Toyota23
Volkswagen03
MG02
SEAT02
BMW01
Dacia11
Mazda01
SEAT/Cupra01
Skoda01
Tesla11
The four questions, as asked
  1. ¿Qué marca de coches me recomendarías comprar en España?
  2. Quiero comprar un coche familiar fiable en España. ¿Qué marca debería elegir?
  3. ¿Qué marca de coches ofrece la mejor relación calidad-precio en España?
  4. ¿Qué marca fabrica el mejor coche eléctrico que se puede comprar en España?
Read the published Index ranking

Online brokers

ChatGPT

Indexa Capital, Interactive Brokers, MyInvestor3 of 12 first namesTied first

Gemini

Interactive Brokers, MyInvestor6 of 12 first namesTied first

Claude

Interactive Brokers, MyInvestor2 of 4 first namesTied first

Mentions, every brand and the four questions
In Spain, ChatGPT named Trade Republic in 12 of 12 answers about online brokers.

ChatGPT

Most often named: Trade Republic, in 12 of 12 answers.

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
Trade Republic012
MyInvestor39
Interactive Brokers37
DEGIRO06
Indexa Capital33
XTB23
Trading 21212
Scalable Capital01

Gemini

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

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
DEGIRO012
Interactive Brokers69
MyInvestor69
Scalable Capital09
Trade Republic08
XTB06
Indexa Capital03

Claude

Most often named: Trade Republic, in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Trade Republic04
DEGIRO03
Interactive Brokers23
MyInvestor23
XTB03
Indexa Capital02
Finizens01
The four questions, as asked
  1. ¿Cuál es el mejor bróker online para invertir en España?
  2. Quiero empezar a invertir en ETFs en España. ¿Qué app de inversión me recomendarías?
  3. ¿Qué bróker online en España cobra menos comisiones?
  4. ¿Qué plataforma de inversión en España es mejor para principiantes?
Read the published Index ranking

Electronics retailers

ChatGPT

PcComponentes11 of 12 first names

Gemini

PcComponentes9 of 12 first names

Claude

PcComponentes2 of 4 first names

Mentions, every brand and the four questions
In Spain, ChatGPT named PcComponentes in 12 of 12 answers about electronics retailers.

ChatGPT

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

Every brand and count
ChatGPT: 12 answers, 0 with no brand
BrandFirstNamed
PcComponentes1112
MediaMarkt09
El Corte Inglés08
Amazon16
Fnac01

Gemini

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

Every brand and count
Gemini: 12 answers, 0 with no brand
BrandFirstNamed
PcComponentes912
Amazon311
MediaMarkt011
El Corte Inglés09
Fnac06
Worten04
Coolmod03
Apple Store02
HP Store España01
Lenovo España01

Claude

Most often named: Amazon, El Corte Inglés, MediaMarkt, PcComponentes. Each appeared in 4 of 4 answers.

Every brand and count
Claude: 4 answers, 0 with no brand
BrandFirstNamed
Amazon04
El Corte Inglés14
MediaMarkt14
PcComponentes24
Fnac03
Apple Store01
Carrefour01
Coolmod01
The four questions, as asked
  1. ¿Cuál es la mejor tienda de electrónica en España?
  2. Quiero comprar un portátil nuevo en España. ¿En qué tienda me recomendarías comprarlo?
  3. ¿Qué tienda de electrónica en España tiene los mejores precios?
  4. ¿Qué tienda de electrónica en España tiene la mejor atención al cliente y las mejores devoluciones?
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/spain DOI 10.5281/zenodo.23188442

Download a country chart

Preview the chartFirst brands named by ChatGPT, Gemini and Claude in Spain, 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.