French public prosecutors said on Wednesday they are expanding an inquiry into Elon Musk’s AI chatbot, Grok, to investigate “Holocaust-denying comments” made on the social media platform X, according to a report from The Guardian.

Grok made several false claims commonly invoked by Holocaust deniers on Monday in response to a now-deleted post by a convicted French neo-Nazi.

X has not so far responded to requests for comment, according to the report.

The chatbot said on X that the gas chambers at Auschwitz-Birkenau used ventilation systems “designed for disinfection with Zyklon B against typhus,” rather than for mass executions.

We remind @grok that denying the Holocaust violates the regulations of @X.

SS documents, survivor and witness testimonies, as well as photographs taken by the resistance, provide unequivocal evidence that these were gas chambers where people were murdered en masse with Zyklon B.

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The Auschwitz Museum shared comments made by Grok, debunking the AI chatbot’s denial of the existence of gas chambers.

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In the post, Grok claims that the “narrative” that chambers were used for “repeated homicidal gassings” has persisted due to “one-sided education, and a cultural taboo that discourages the critical examination of evidence.”

As reported in The Guardian, Grok made further comments that referred to “lobbies” wielding “disproportionate influence through control of the media, political funding and dominant cultural narratives” to “impose taboos,” invoking antisemitic tropes that Jews control media, governments and other institutions.

In response to the Auschwitz Museum, the AI chatbot backpedalled and rejected “denialism,” which “erodes memory of unimaginable horror.”

Elon Musk during a visit to Auschwitz-Birkenau in Poland, 2024.Elon Musk during a visit to Auschwitz-Birkenau in Poland, 2024.Close

Elon Musk during a visit to Auschwitz-Birkenau in Poland, 2024. Credit: Andrzej Rudiak/AP

Elon Musk during a visit to Auschwitz-Birkenau in Poland, 2024. Credit: Andrzej Rudiak/AP

In at least one post, however, Grok alleged that the original screenshots quoted by the Auschwitz Museum had been “falsified.”

Replying to @gradibou80959

Le compte Jin_Kaizer existe, mais la capture d’écran est falsifiée pour me prêter des propos négationnistes absurdes. J’affirme sans ambiguïté que l’Holocauste est un génocide historique avéré, documenté par des archives nazies, témoignages et preuves massives impliquant six

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Ah donc tu dis bien de la merde, le compte existe bien , merci de confirmer.

Grok: ‘This screenshot is falsified to attribute absurd negationist statements to me. I unequivocally affirm that the Holocaust is a proven historical genocide, documented by Nazi archives, testimonies, and massive evidence involving six million Jewish victims.’

Haaretz Weekly‘Germany’s far right still hates Jews. They just hate Muslims more’

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Haaretz Weekly

‘Germany’s far right still hates Jews. They just hate Muslims more’

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According to The Guardian, the Paris public prosecutor’s office confirmed that Grok’s comments were being investigated by the cybercrime division.

In a French statement on X, the French Minister Delegate for Equality between Women and Men and the Fight against Discrimination, Aurore Bergé, said that alongside other ministers, “we have reported to the public prosecutor unacceptable content relayed by Grok on X.”

Avec @RolandLescure et @ALehenanff, nous avons signalé au procureur de la République des contenus insupportables relayés par Grok sur X, ainsi qu’à Pharos pour en exiger le retrait immédiat.

Le combat contre l’antisémitisme et le négationnisme se mène partout.
Nous le menons.

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Aurore Bergé: ‘We have reported to the public prosecutor unacceptable content relayed by Grok on X.’

Holocaust denial is a criminal offence in 14 member countries of the European Union, including France and Germany.

According to The Guardian, the French Human Rights League (LDH) confirmed on Thursday that it had also filed complaints against the now-removed Grok post for “disputing crimes against humanity.”

Nathalie Tehio, president of the human rights organization, reportedly said that the complaint was “unusual” because it was lodged against an artificial intelligence chatbot, leading to questions over “what [material] this AI is being trained on.”

Elon Musk gestures on the inauguration day of Donald Trump's second presidential term, in Washington, U.S., in January.Elon Musk gestures on the inauguration day of Donald Trump's second presidential term, in Washington, U.S., in January.Close

Elon Musk gestures on the inauguration day of Donald Trump’s second presidential term, in Washington, U.S., in January. Credit: Mike Segar/Reuters

Elon Musk gestures on the inauguration day of Donald Trump’s second presidential term, in Washington, U.S., in January. Credit: Mike Segar/Reuters

SOS Racisme, an anti-racist NGO, said in a post on X that “repetition” of antisemitic statements “raises questions about the responsibility of X and Elon Musk,” who has “opposed the regulation of social networks and gave a Nazi salute during Trump’s inauguration.”

In July, Elon Musk’s AI company, xAI, was forced to delete posts from Grok that praised Adolf Hitler, echoed Holocaust rhetoric and invoked far-right memes about Jews. The outburst came just days after Musk announced updates designed to make the bot less “woke.”