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ADL finds Grok is the worst AI chatbot at countering antisemitism

The ADL's AI Index tested six major language models and found xAI's Grok scored lowest at 21, while Anthropic's Claude scored highest with 80 points.

  • On Wednesday, the Anti-Defamation League released its inaugural AI Index testing six major models and found Grok, xAI chatbot, ranked last with a score of 21 while Anthropic's Claude Sonnet 4 led with 80.
  • Using 4,181 chats per model between August and October 2025, researchers tested the six models against anti-Jewish, anti-Zionist and extremist prompts via surveys, open-ended, multi-step, document summaries, and image interpretation.
  • Survey-Format prompts showed Grok, the xAI chatbot, detected bias at high rates, but it scored zero on five of 15 tests and failed image analysis, linked to 1.8 million sexualized images recently.
  • This week, the European Union opened an investigation into xAI's compliance with the Digital Services Act, following a Monday letter from 35 attorneys general led by Pennsylvania Attorney General Dave Sunday, and France's 2025 probe into Holocaust denial outputs.
  • Jonathan Greenblatt, ADL CEO, said the index reveals a troubling reality and hopes it guides companies, noting a 59-point spread and that Grok needs fundamental improvements across multiple dimensions.
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The Verge broke the news in United States on Wednesday, January 28, 2026.
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