All news on the topic: xAI Grok 4

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Paris prosecutors probe Grok over alleged antisemitic, Holocaust-denying posts
French prosecutors initiated a criminal investigation into X, concerning allegations that the company manipulated its algorithms for the purposes of "foreign interference."
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OpenAI beats Elon Musk’s Grok in AI chess tournament final
OpenAI’s AI model 03, developed by the creators of ChatGPT, wins AI chess tournament undefeated