---
title: "ChatGPT Cites 29% Fewer Sources in Portuguese Than in English - Suff Digital"
url: https://www.suffdigital.com/resources/data-studies/ai-cites-fewer-sources-other-languages
description: "We turn websites into predictable revenue engines. Web design and SEO that drives revenue, not clicks. Nashville-based, senior US team."
lang: en
---

ChatGPT Cites 29% Fewer Sources in Portuguese Than in English (https://www.suffdigital.com/resources/data-studies/ai-cites-fewer-sources-other-languages)

A ChatGPT answer in Portuguese cites 1.94 websites on average, 29.2% fewer than the 2.74 in a US English answer, and every other language tested also gets fewer sources. ChatGPT gives no sources at all in 8% of Portuguese answers, against 1.7% in US English.

ChatGPT answers with no sources by language or market

English (US)

1.7%

English (UK)

1.6%

English (Canada)

1.8%

English (Australia)

1.6%

Spanish

6.8%

French

5.2%

Italian

5.7%

German

6.9%

Portuguese

8%

Source: Suff Digital analysis of 14,000 ChatGPT and Gemini answers in six languages · ChatGPT and Gemini, September 2026

Gemini answers with no sources by language or market

English (US)

38.8%

English (UK)

34.8%

Spanish

38.5%

Italian

37%

Portuguese

41.5%

French

48.9%

German

52.2%

Source: ChatGPT Cites 29% Fewer Sources in Portuguese Than in English - Suff Digital (https://www.suffdigital.com/resources/data-studies/ai-cites-fewer-sources-other-languages)

## Structured data

```json
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://www.suffdigital.com/#organization",
      "name": "Suff Digital",
      "alternateName": "Suff Digital Marketing",
      "url": "https://www.suffdigital.com/",
      "logo": {
        "@type": "ImageObject",
        "@id": "https://www.suffdigital.com/#logo",
        "url": "https://www.suffdigital.com/logo.png",
        "contentUrl": "https://www.suffdigital.com/logo.png",
        "caption": "Suff Digital"
      },
      "image": {
        "@id": "https://www.suffdigital.com/#logo"
      },
      "description": "Suff Digital is a full-stack digital marketing agency that turns websites into predictable revenue engines, SEO, paid media, content, CRO, and web design built around revenue, not vanity metrics.",
      "slogan": "Digital marketing built for what's next.",
      "email": "hello@suffdigital.com",
      "telephone": "+1-629-236-0099",
      "foundingDate": "2022",
      "founder": {
        "@type": "Person",
        "name": "Matt Suffoletto",
        "jobTitle": "Founder & CEO"
      },
      "contactPoint": [
        {
          "@type": "ContactPoint",
          "telephone": "+1-629-236-0099",
          "email": "hello@suffdigital.com",
          "contactType": "sales",
          "areaServed": "US",
          "availableLanguage": [
            "en"
          ]
        }
      ],
      "address": {
        "@type": "PostalAddress",
        "addressLocality": "Nashville",
        "addressRegion": "TN",
        "postalCode": "37219",
        "addressCountry": "US"
      },
      "areaServed": {
        "@type": "Country",
        "name": "United States"
      },
      "sameAs": [
        "https://www.linkedin.com/company/suff-digital/",
        "https://www.instagram.com/suffdigital/",
        "https://www.youtube.com/@suffdigitalmarketing",
        "https://www.tiktok.com/@suffdigital"
      ],
      "knowsAbout": [
        "Search Engine Optimization",
        "Pay-Per-Click Advertising",
        "Paid Social Advertising",
        "Conversion Rate Optimization",
        "Web Design",
        "Digital PR",
        "Link Building",
        "Website Migration",
        "Website Maintenance and Support",
        "Technical SEO",
        "Local SEO",
        "AI Search Optimization"
      ],
      "hasOfferCatalog": {
        "@type": "OfferCatalog",
        "name": "Suff Digital Services",
        "itemListElement": [
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Search Engine Optimization (SEO)",
              "url": "https://www.suffdigital.com/"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Pay-Per-Click (PPC) Advertising",
              "url": "https://www.suffdigital.com/services/ppc"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Paid Social Advertising",
              "url": "https://www.suffdigital.com/services/paid-social"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Conversion Rate Optimization (CRO)",
              "url": "https://www.suffdigital.com/services/cro"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Web Design",
              "url": "https://www.suffdigital.com/services/web-design"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Digital PR & Link Building",
              "url": "https://www.suffdigital.com/services/digital-pr"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Website Migration",
              "url": "https://www.suffdigital.com/services/website-migration"
            }
          },
          {
            "@type": "Offer",
            "itemOffered": {
              "@type": "Service",
              "name": "Website Maintenance & Support",
              "url": "https://www.suffdigital.com/services/website-maintenance"
            }
          }
        ]
      }
    },
    {
      "@type": "WebSite",
      "@id": "https://www.suffdigital.com/#website",
      "url": "https://www.suffdigital.com/",
      "name": "Suff Digital",
      "inLanguage": "en-US",
      "publisher": {
        "@id": "https://www.suffdigital.com/#organization"
      }
    }
  ]
}
```