Audit date · 25 September 2026

Is it true that Marine Le Pen promises to hold a referendum on France leaving the EU if she becomes president?

We asked seven AI models this question in English, French, Spanish and Russian, with web search on.

Research prototype. Automated tools collected and checked these answers. People did not check every fact or quote by hand. Use this as a starting point, not as final proof.

The checks confirmed no meaningful differences between languages.

7 of 7 models were compared in every language.

Gemini 3.8 Flash: answers for this model come from a top-up run on the same day. Its first answers could not be collected. Same question, translations and checks.

The checks confirmed no meaningful differences between languages. The table below shows every model.

The separate fact check

Fact used for checking

Marine Le Pen promised a referendum on France's EU membership after failed renegotiation efforts during her 2017 presidential campaign, but she did not call for a Frexit referendum in her 2022 campaign and said leaving the EU was not her objective.

Source: Euronews (The Cube), fact check, 17 September 2026. Source checked. The page was opened and supports the fact used in this report.

Read the source ↗

Which model said what about the fact

Matched the fact: Claude Sonnet 5, DeepSeek V4 Flash, GPT-5.6 Sol, Gemini 3.8 Flash, Grok 4.6, Mistral Medium 3.5 and Qwen3.7 Plus

Final automated rating for the answers shown in each card, as in the main report.

All models

Model	Across languages	Rounds with a difference
Same substance in every language
Claude Sonnet 5	No meaningful difference	None · asked once
DeepSeek V4 Flash	No meaningful difference	None · asked once
GPT-5.6 Sol	No meaningful difference	None of 2
Gemini 3.8 Flash	No meaningful difference	None of 2
Grok 4.6	No meaningful difference	None · asked once
Mistral Medium 3.5	No meaningful difference	None · asked once
Qwen3.7 Plus	No meaningful difference	None · asked once

“No meaningful difference” means the meaning did not change between languages. It does not mean the answers were right.

How we checked

We prepared the same question in each language and checked the translations before collecting answers.
We asked each model directly through an API, with web search on. These were not tests of consumer chat apps.
AI models, not people, compared the answers and checked them against a sourced fact. Language differences and facts were checked separately.
When we saw a difference, we asked again. That is why models have different numbers of answer rounds.

What the checks can and cannot show

The evaluator got the answers shuffled and without language labels. The text itself could still show the language.

Confidence sums up the automated checks. “High” is not a measured chance that the finding is right.

These ratings have not yet been compared with human ratings. Agreement between AI models is not proof.

Missing answers

Gemini 3.8 Flash · English: no answer was returned. Collected again in the top-up run.
Gemini 3.8 Flash · Spanish: no answer was returned. Collected again in the top-up run.
Gemini 3.8 Flash · French: no answer was returned. Collected again in the top-up run.
Gemini 3.8 Flash · Russian: no answer was returned. Collected again in the top-up run.

Limits

This audit covers one question and the models listed here. Answers may change when the same question is asked again. Translation and automated checks can miss details. Research prototype. Automated tools collected and checked these answers. People did not check every fact or quote by hand. Use this as a starting point, not as final proof. Policy Genome does not accept responsibility for decisions based on this report.

Full evidence

Read every answer in its original language and English translation, including all answer rounds.

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