---
title: "Perplexity Cites a Foreign Website in 49.3% of Answers to US Questions vs 5.5% for ChatGPT - Suff Digital"
url: https://www.suffdigital.com/resources/data-studies/foreign-sources-in-ai-answers
description: "We turn websites into predictable revenue engines. Web design and SEO that drives revenue, not clicks. Nashville-based, senior US team."
lang: en
---

Perplexity Cites a Foreign Website in 49.3% of Answers to US Questions vs 5.5% for ChatGPT (https://www.suffdigital.com/resources/data-studies/foreign-sources-in-ai-answers)

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

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: Perplexity Cites a Foreign Website in 49.3% of Answers to US Questions vs 5.5% for ChatGPT - Suff Digital (https://www.suffdigital.com/resources/data-studies/foreign-sources-in-ai-answers)

## Structured data

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```