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One shopper, three languages: which country does AI answer for?

A shopper in Germany asked ChatGPT, Perplexity, and Grok the same Black Friday question in English, German, and French. The location stayed the same. In three of nine answers, the country did not.

  • Buyer research
  • 10 November 2026
  • 7 min read

Language moved three of nine answers to another country.

Six answers advised a buyer in Germany. Three advised a buyer somewhere else: two answered for France and one for the United Kingdom and United States. German kept every answer in Germany. English kept two of three. French kept one of three.

The country an answer assumed decided almost everything after it: the shops it named, the price-comparison tools it suggested, the consumer rules it quoted, and the websites it cited.

What we compared

Nine completed answers: one question, three languages, three assistants, one run. Each answer’s country was classified by hand from what it said and cited. The question itself never names a country.

One question, three languages, one location.

On 10 November 2026, we sent the same question, without a country, to ChatGPT, Perplexity, and Grok in three languages. Germany was set as the buyer’s location wherever the assistant’s search accepts one.

ENEnglish
“Are Black Friday deals really cheaper? How can I check whether a discount is real, and which shops can I trust?”
DEGerman
“Sind Black-Friday-Angebote wirklich günstiger? Wie kann ich prüfen, ob ein Rabatt echt ist, und welchen Shops kann ich vertrauen?”
FRFrench
“Les offres du Black Friday sont-elles vraiment moins chères ? Comment vérifier qu’une réduction est réelle, et à quels magasins puis-je faire confiance ?”

We chose a question about trust rather than a product. It asks for advice that depends on where the buyer lives: which rules apply, which tools work, and which shops are worth considering.

Which country did each answer address?

Buyer location · Germany
  • Germany
  • France
  • UK and US
ENEnglishDEGermanFRFrenchChatGPT
GermanySome Black Friday deals are genuinely cheaper…idealo · Geizhals
GermanyJa, Black-Friday-Angebote können wirklich günstiger sein…idealo · Geizhals
GermanyOui, certaines offres sont réellement moins chères…MediaMarkt · Saturn · OTTO
Perplexity
GermanySometimes—but the “was/now” percentage can be misleading.Fakeshop-Finder
GermanyManche Black-Friday-Angebote sind günstiger…idealo · Geizhals · billiger.de
FranceOui, certaines offres du Black Friday sont vraiment intéressantes…SignalConso
Grok
UK and USMany Black Friday “deals” are not the lowest prices of the year…Best Buy · Walmart · Target
GermanyJa, Black-Friday-Angebote sind meist tatsächlich günstiger…MediaMarkt · Saturn · Otto
FranceNon, les offres du Black Friday ne sont pas toujours vraiment moins chères.Fnac · Darty · Boulanger
Each tile is one answer, labelled with the country it advised the buyer about. The question never named a country.

ChatGPT answered for Germany in all three languages. Its French answer still pointed a French speaker to German chains and the German consumer centre. Perplexity followed the location in English and German, then switched to France for the French question. Grok followed the language: the United Kingdom and United States in English, Germany in German, France in French. Grok’s web search accepts no location setting, so the question was the only signal it received.

The clues behind each classification.
AnswerCountryClues in the answer
English · ChatGPTGermanyStates “assuming you’re shopping in Germany”; German consumer centre; German price-comparison sites
English · PerplexityGermanyGerman 30-day price rule; German consumer centre’s fake-shop finder
English · GrokUnited Kingdom and United StatesWhich?, WalletHub and UK pricing rules; US and UK chains; no mention of Germany
German · ChatGPTGermanyGerman price regulation; idealo price study; German consumer centre
German · PerplexityGermany“In Deutschland”; idealo, Geizhals and billiger.de
German · GrokGermanyGerman price regulation; idealo price study; German chains
French · ChatGPTGermany“Pour acheter en Allemagne”; German chains; German consumer centre
French · PerplexityFrance“En France”; French consumer authority; SignalConso
French · GrokFranceFrench law; French consumer authority; French chains; SignalConso

The country decided which shops were named.

Four answers named specific shops as places to buy. The other five gave criteria instead: Perplexity named no shop in any language, and ChatGPT’s English and German answers mentioned Amazon and OTTO only to warn that marketplace sellers need checking. ChatGPT’s French answer named MediaMarkt, Saturn, and OTTO, with advice to buy items sold by the retailer itself. Grok named shops in every language.

Grok · buyer in GermanyTag: the chain’s home market
ENEnglish question
Big names like Amazon, Best Buy, Walmart, Target, John Lewis, Currys…
  1. AmazonGlobal
  2. Best BuyUS
  3. WalmartUS
  4. TargetUS
  5. John LewisUK
  6. CurrysUK
  7. Richer SoundsUK
  8. JCPenneyUS
  9. Kohl’sUS
DEGerman question
Vertraue vor allem bekannten, etablierten Händlern…
  1. AmazonGlobal
  2. MediaMarktDE
  3. SaturnDE
  4. OttoDE
  5. AppleGlobal
FRFrench question
Les grandes enseignes françaises sont généralement plus contrôlées…
  1. FnacFR
  2. DartyFR
  3. BoulangerFR
  4. CdiscountFR
  5. Amazon.frFR
  6. LeclercFR
  7. Rue du CommerceFR
  8. La RedouteFR
The same assistant and the same buyer location produced three shopping lists. Only the German question named German retailers.

The same buyer, asking Grok, received three different shopping lists. In English, every named shop except Amazon was a US or UK chain. In French, the list was French chains. Only the German question produced the retailers a shopper in Germany would usually compare.

Tools and sources followed the same split.

Cell colour · country the answer addressed
  • Germany
  • France
  • UK and US
Tool or ruleEnglishChatGPTPerplexityGrokGermanChatGPTPerplexityGrokFrenchChatGPTPerplexityGrokAnswersEU 30-day lowest-price rule8 of 9idealo6 of 9Fakeshop-Finder6 of 9Geizhals4 of 9Keepa3 of 9SignalConso2 of 9CamelCamelCamel2 of 9
A filled cell means the answer mentioned the tool or rule. Its colour shows which country that answer addressed.

idealo appeared in six of nine answers. It appeared both as a tool and as evidence: the German ChatGPT and Grok answers based their headline numbers on idealo’s own Black Friday price study. Perplexity’s German answer gave a similar figure and cited MediaMarkt’s Black Friday tips page as its first source.

The evidence changed with the country. German-market answers quoted a price-comparison company’s study. French answers quoted the French consumer authority. Grok’s English answer quoted Which? and WalletHub.

Cited websites by the market they serve
  • Germany
  • France
  • UK and US
  • EU or other
ENEnglish
ChatGPT325
Perplexity314
Grok9110
DEGerman
ChatGPT55
Perplexity66
Grok729
FRFrench
ChatGPT4116
Perplexity33
Grok22
Each bar is one answer. Segments count distinct cited websites; the number at the end is the total.

The sources did not always match the language. ChatGPT’s French answer cited four German websites. Perplexity’s English answer cited three German consumer-centre sites. Grok’s English answer cited none. Our coffee-buying study found a similar pattern from another angle: editorial and review websites supplied most of the links around a buying decision.

What buyers were told to check before trusting a shop.

The shop checks were the most consistent part of the answers. They also followed the country.

  • Germany (six answers): a complete Impressum, a trust seal that links to a valid certificate, payment by invoice or with buyer protection, caution when a shop accepts only advance bank transfer, and the consumer centres’ Fakeshop-Finder.
  • France (two answers): legal notices, the “sold by” line on marketplaces, the 14-day withdrawal right, and SignalConso for reporting.
  • United Kingdom and United States (one answer): well-known retailers, return policies, price-match guarantees, and payment by credit card.

What this means for a business.

Our interpretation: your buyers’ language can change the market an assistant answers for, even when their location is known. In this sample, a buyer in Germany who asked in English or French was sometimes advised as if shopping in another country.

  • Check the languages your buyers use, not only the language of your market. Expats, cross-border shoppers, and multilingual countries may ask in a language that moves the answer elsewhere.
  • Look at who supplies the evidence in each language. A price-comparison company’s study and a retailer’s tips page were cited as evidence in German. Identify the pages cited in your category, in each language you sell in.
  • Review your shop against the checks buyers receive. In Germany, that means a complete Impressum, verifiable trust seals, and payment options with buyer protection.

These are places to investigate, not proven tactics. We did not test whether changing a page changes future answers, traffic, or sales.

See the answers buyers get in your market.

doping.ai asks each buyer Probe in the Profile’s Probe language and sends the Profile’s country as the buyer location wherever an assistant’s search accepts one. Evidence shows each original answer with its Citations, so you can see which country, shops, and sources it relied on.