Perplexity Cites a Foreign Website in 49.3% of Answers to US Questions vs 5.5% for ChatGPT

    Ask Perplexity an everyday question from the United States and 49.3% of the time its answer cites a website from another country, against 5.5% for ChatGPT. Across five AI engines, 14% of answers to US questions cite at least one foreign site, led by Britain's NHS and BBC.

    Answers citing a foreign website by AI engine
    Perplexity
    49.3%
    Google AI Overviews
    15.4%
    Google AI Mode
    10.9%
    Gemini
    7.1%
    ChatGPT
    5.5%

    Source: Suff Digital analysis of 25,940 AI answers to questions asked from the US · answers from ChatGPT, Gemini, Perplexity and Google's AI features, September 2026

    Citations in answers to US questions by foreign website
    nhs.uk
    365
    bbc.co.uk
    336
    rhs.org.uk
    138
    canada.ca
    105
    betterhealth.vic.gov.au
    103
    europa.eu
    90
    amazon.co.uk
    76
    aboutamazon.co.uk
    76
    gismeteo.ru
    68
    bhf.org.uk
    63
    moneyhelper.org.uk
    59
    raisingchildren.net.au
    58

    Source: Suff Digital analysis of 25,940 AI answers to questions asked from the US · answers from ChatGPT, Gemini, Perplexity and Google's AI features, September 2026

    AI answers citing a foreign website by question topic
    Fitness
    26.5%
    Sleep
    26%
    Pets
    23.3%
    Beauty
    22.3%
    Gardening
    21.5%
    Mental health
    21.4%
    Mortgages
    5.5%
    Real estate
    3.9%
    Taxes
    3.8%
    Insurance
    3.1%

    Source: Suff Digital analysis of 25,940 AI answers to questions asked from the US · answers from ChatGPT, Gemini, Perplexity and Google's AI features, September 2026

    Source: Perplexity Cites a Foreign Website in 49.3% of Answers to US Questions vs 5.5% for ChatGPT - Suff Digital