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Most Cited Sources in Google AI Mode Answers in Spain

Jose Luis García del RíoGrowthatOmnia

To find out which sources Google AI Mode cites most when someone in Spain asks it a question, we ran the same non-branded prompts every day, from January to October 2026, across sectors from insurance to travel, and recorded the sources of every answer.

1.1Manswers that cite sources

25,567non-branded prompts

30sectors

Method

How we measured it

  • Every day, the same prompts. 25,567 prompts that name no brand, run in Google AI Mode from Spain between January and October 2026, such as "which health insurance is best?". Branded prompts like "is Sanitas health insurance worth it?" are left out.
  • Only answers that cite sources. We call a source any website Google AI Mode cites, and keep the answers that cite at least one: 1.1 million, with 247,368 different sources.
  • Presence is the metric: the share of answers that cite sources in which a source appears.
  • 30 sectors, the same weight. A sector with 3,707 prompts weighs as much in the ranking as one with 62.
  • Google's own viewer links don't count. Links to Google's internal result viewers (google.com/searchviewer) open another Google page, not a website, so they are not counted as sources.
Cite this study

Free to use with attribution.

Please link to this page when you quote the data.

Omnia (2026). Most Cited Sources in Google AI Mode Answers in Spain. Data Hub. useomnia.com/data/google-ai-mode-sources-spain
The ranking

Google AI Mode's 20 most cited sources in Spain

How to read it

"Presence 32.5%" means that youtube.com appears in 1 of every 3 answers that cite sources to non-branded prompts in Spain.

All percentages are calculated over answers that cite sources, not over all Google AI Mode answers.

#SourcePresenceSectors
01youtube.comSocial & forums32.5%30 of 30
02instagram.comSocial & forums14.0%30 of 30
03tiktok.comSocial & forums8.4%30 of 30
04reddit.comSocial & forums7.9%30 of 30
05facebook.comSocial & forums7.6%30 of 30
06linkedin.comSocial & forums3.9%30 of 30
07rastreator.comComparison sites3.2%19 of 30
08selectra.esComparison sites2.7%15 of 30
09kelisto.esComparison sites2.6%15 of 30
10amazon.esRetail2.5%29 of 30
11elpais.comNews2.3%30 of 30
12lavanguardia.comNews2.1%30 of 30
13ocu.orgComparison sites2.1%28 of 30
14mayoclinic.orgReference2.0%19 of 30
15nih.govReference1.9%25 of 30
16elcorteingles.esRetail1.8%29 of 30
17wikipedia.orgReference1.8%30 of 30
18acierto.comComparison sites1.8%17 of 30
19rankia.comNews1.8%20 of 30
20elmundo.esNews1.7%30 of 30
By source type

Company websites have a presence of 83.8%, but none goes above 1.2%.

  • Company websites83.8%
  • News57.4%
  • Social & forums52.0%
  • Retail43.6%
  • Comparison sites37.9%
  • Government19.4%
  • Reference18.6%
  • Unclassified9.2%
  • Company directories and jobs4.9%
  • App stores0.9%
  • Developer sites0.2%
News · 57.4%

News comes second

elpais.com and lavanguardia.com lead news, with a presence of 2.3% and 2.1%, both in all 30 sectors.

Top 10 by type

The leaders of each source type

Each type ranked by the same presence metric.

  1. 01elpais.comGeneral news2.3%30/30
  2. 02lavanguardia.comGeneral news2.1%30/30
  3. 03rankia.comMagazine & blog1.8%20/30
  4. 04elmundo.esGeneral news1.7%30/30
  5. 05eleconomista.esTrade publication1.4%29/30
  6. 06elindependiente.comGeneral news1.3%30/30
  7. 07elperiodico.comGeneral news1.3%30/30
  8. 08elespanol.comGeneral news1.2%30/30
  9. 09okdiario.comGeneral news1.2%29/30
  10. 10larazon.esGeneral news1.2%30/30
Presence: 57.4%

News

elpais.com leads, with a presence of 2.3% in all 30 sectors. lavanguardia.com follows with 2.1%.

  1. 01rastreator.comListicle & affiliate3.2%19/30
  2. 02selectra.esListicle & affiliate2.7%15/30
  3. 03kelisto.esListicle & affiliate2.6%15/30
  4. 04ocu.orgReview platform2.1%28/30
  5. 05acierto.comListicle & affiliate1.8%17/30
  6. 06polizamedica.esListicle & affiliate1.5%9/30
  7. 07tripadvisor.esReview platform1.5%21/30
  8. 08helpmycash.comListicle & affiliate1.3%16/30
  9. 09sincomisiones.orgListicle & affiliate1.0%14/30
  10. 10doctoralia.esReview platform0.9%19/30
Presence: 37.9%

Comparison sites

rastreator.com leads, with a presence of 3.2%, and reaches 34.9% in insurance. ocu.org is cited in 28 of 30 sectors.

  1. 01mayoclinic.orgDictionary & how-to2.0%19/30
  2. 02nih.govAcademic1.9%25/30
  3. 03wikipedia.orgEncyclopedia & wiki1.8%30/30
  4. 04uniscopio.comDictionary & how-to0.7%13/30
  5. 05sciencedirect.comAcademic0.6%26/30
  6. 06elsevier.esAcademic0.6%18/30
  7. 07ensayosclinicos.esDictionary & how-to0.5%8/30
  8. 08iebschool.comAcademic0.4%22/30
  9. 09unirioja.esAcademic0.3%27/30
  10. 10unir.netAcademic0.3%25/30
Presence: 18.6%

Reference

mayoclinic.org leads, with a presence of 2.0%. nih.gov follows with 1.9%: it is a US government website, but we count it here as an academic source. wikipedia.org, with 1.8%, is the only source of this top 10 cited in all 30 sectors.

  1. 01medlineplus.govGovernment1.3%17/30
  2. 02comunidad.madridGovernment0.7%27/30
  3. 03europa.euGovernment0.5%29/30
  4. 04sanidad.gob.esGovernment0.5%20/30
  5. 05gob.mxGovernment0.4%27/30
  6. 06juntadeandalucia.esGovernment0.3%24/30
  7. 07boe.esGovernment0.3%27/30
  8. 08miteco.gob.esGovernment0.3%19/30
  9. 09cnmc.gob.esGovernment0.3%7/30
  10. 10cnmc.esGovernment0.3%21/30
Presence: 19.4%

Government

medlineplus.gov leads, with a presence of 1.3%. comunidad.madrid follows with 0.7%, in 27 sectors.

  1. 01youtube.comVideo32.5%30/30
  2. 02instagram.comSocial network14.0%30/30
  3. 03tiktok.comVideo8.4%30/30
  4. 04reddit.comForum & community7.9%30/30
  5. 05facebook.comSocial network7.6%30/30
  6. 06linkedin.comSocial network3.9%30/30
  7. 07finect.comForum & community1.2%16/30
  8. 08quora.comForum & community0.3%28/30
  9. 09minube.comSocial network0.2%13/30
  10. 10x.comSocial network0.1%26/30
Presence: 52.0%

Social & forums

youtube.com has a presence of 32.5%: it appears in 1 of every 3 answers that cite sources, in all 30 sectors. instagram.com follows with 14.0%.

  1. 01amazon.esMarketplace2.5%29/30
  2. 02elcorteingles.esRetailer1.8%29/30
  3. 03idealista.comMarketplace1.5%24/30
  4. 04tiendanimal.esRetailer1.5%9/30
  5. 05primor.euRetailer1.2%16/30
  6. 06druni.esRetailer1.0%12/30
  7. 07pccomponentes.comRetailer0.9%21/30
  8. 08booking.comMarketplace0.9%16/30
  9. 09leroymerlin.esRetailer0.8%19/30
  10. 10mercadolibre.com.mxMarketplace0.8%23/30
Presence: 43.6%

Retail

amazon.es leads, with a presence of 2.5% in 29 sectors. tiendanimal.es is cited in only 9 sectors, but makes the top 10 thanks to its presence in pets (42.7%), because every sector weighs the same.

Compared with ChatGPT

The same prompts in ChatGPT

Presence of the same sources in ChatGPT, with the same prompts, dates and method.

SourceGoogle AI ModeChatGPT
youtube.com32.5%1.6%
instagram.com14.0%0.2%
reddit.com7.9%10.5%
facebook.com7.6%0.2%
elpais.com2.3%13.2%
wikipedia.org1.8%6.3%
ocu.org2.1%5.8%

The ChatGPT figures come from our study of the sources ChatGPT cites in Spain. See the ChatGPT study

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