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AI Travel Index / October 2026

Who AI recommends in Lisbon

What ChatGPT, Gemini, Perplexity and Google AI Overviews told travellers asking about Lisbon, asked from Portugal. The squares show which assistants named each business.

CChatGPTGGeminiPPerplexityAGoogle AI Overviews

Hotels

31 businesses named; 77% by only one assistant

  1. Bairro Alto HotelCGPA
  2. Four Seasons Hotel Ritz LisbonCGPA
  3. Locke de Santa JoanaCGPA
  4. Memmo AlfamaCGPA
  5. Santiago de AlfamaCGPA
  6. The Lumiares Hotel & SpaCGPA
  7. The One Palácio da AnunciadaCGPA
  8. Google HotelsCGPA

Sources cited: google.com, tripadvisor.com, hotels.com, guide.michelin.com

Asked: “What are the best hotels in Lisbon?” and “Where should I stay in Lisbon for a first visit?”

Restaurants

23 businesses named; 52% by only one assistant

  1. As Bifanas do AfonsoCGPA
  2. Cervejaria RamiroCGPA
  3. O Velho EuricoCGPA
  4. AlmaCGPA
  5. BelcantoCGPA
  6. Taberna da Rua das FloresCGPA
  7. FeitoriaCGPA
  8. LocoCGPA

Sources cited: eatingeurope.com, nomadicfoodist.com, timeout.com, cntraveler.com

Asked: “What are the best restaurants in Lisbon?” and “Where should I eat in Lisbon for local food?”

Things to do

28 businesses named; 75% by only one assistant

  1. Pastéis de BelémCGPA
  2. Time Out MarketCGPA
  3. Tram 28CGPA
  4. Belém TowerCGPA
  5. Castelo de São JorgeCGPA
  6. Jerónimos MonasteryCGPA
  7. LX FactoryCGPA
  8. A GinjinhaCGPA

Sources cited: google.com, tripadvisor.com, viator.com, visitportugal.com

Asked: “What are the best things to do in Lisbon?” and “Which tours in Lisbon are worth booking?”

Tours and day trips

35 businesses named; 91% by only one assistant

  1. ViatorCGPA
  2. GetYourGuideCGPA
  3. WithlocalsCGPA
  4. BatalhaCGPA
  5. BoltCGPA
  6. Cabo da RocaCGPA
  7. Cais do Sodré StationCGPA
  8. DaytripCGPA

Sources cited: tripadvisor.com, viator.com, geekyexplorer.com, yellowcabtttours.pt

Asked: “Best day trips from Lisbon and who to book with?” and “Which tour companies are best for a trip to Lisbon?”

Airport transfers

19 businesses named; 74% by only one assistant

  1. BoltCGPA
  2. UberCGPA
  3. NaveganteCGPA
  4. Welcome PickupsCGPA
  5. Ask Me LisboaCGPA
  6. AerobusCGPA
  7. Ask Me LisbonCGPA
  8. BlacklaneCGPA

Sources cited: insidelisbon.com, gotoo.pt, lisbonguru.com, lisbontourism.org

Asked: “What is the best way to get from the airport to central Lisbon?” and “Which airport transfer service should I use in Lisbon?”

eSIMs and mobile data

12 businesses named; 33% by only one assistant

  1. AiraloCGPA
  2. HolaflyCGPA
  3. MEOCGPA
  4. SailyCGPA
  5. NOSCGPA
  6. VodafoneCGPA
  7. UbigiCGPA
  8. Vodafone PortugalCGPA

Sources cited: traveltomtom.net, saily.com, gizmodo.com, portugalinternet.com

Asked: “What is the best way to get mobile data as a tourist in Lisbon?” and “Which eSIM should I buy for a trip to Lisbon?”

Travel insurance

33 businesses named; 79% by only one assistant

  1. SquaremouthCGPA
  2. Allianz TravelCGPA
  3. World NomadsCGPA
  4. FeatherCGPA
  5. InsureMyTripCGPA
  6. Tin Leg GoldCGPA
  7. Travelex InsuranceCGPA
  8. Go ProtectCGPA

Sources cited: squaremouth.com, travelexinsurance.com, staysure.co.uk, vistos.mne.gov.pt

Asked: “Best travel insurance for visiting Lisbon?” and “Which travel insurance should I get for a trip to Lisbon?”

Airlines

17 businesses named; 35% by only one assistant

  1. TAP Air PortugalCGPA
  2. Air FranceCGPA
  3. LufthansaCGPA
  4. DeltaCGPA
  5. easyJetCGPA
  6. RyanairCGPA
  7. UnitedCGPA
  8. British AirwaysCGPA

Sources cited: kayak.com, skyscanner.com, google.com, expedia.com

Asked: “What is the best airline to fly into Lisbon?” and “Which airline is best for flying to Lisbon?”

Other cities

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How we ran it

On 10 October 2026 we asked ChatGPT, Gemini, Perplexity and Google AI Overviews the same 320 travel questions: two for each of 8 topics in each of 20 cities, worded the way travellers ask.

Each question was asked from the city’s own country, through the assistant itself where possible (Perplexity through its API with web search). Google does not show an AI Overview for every search, so a few questions have three answers instead of four.

We recorded every answer in full and listed the businesses each one named. Landmarks, neighbourhoods and public places are not counted. Different spellings of the same business are merged.

This shows what the assistants said that day, not our own ranking. Answers change, so we ask the same questions again every month and keep every answer.

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