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OpenAI beats Elon Musk's Grok in AI chess tournament

KAGGLE PLATFORM, AUG 8 – OpenAI's o3 AI won the Kaggle chess tournament without losses, defeating Elon Musk's Grok 4 and outperforming seven other large language models in a three-day event.

  • OpenAI's o3 model defeated Elon Musk's Grok 4 4-0 in the final of an AI chess tournament on Google's Kaggle Game Arena held on Thursday.
  • The event featured eight large language models including Grok 4, which had dominated until the final but then committed repeated blunders.
  • Magnus Carlsen and David Howell commentated live, noting Grok's play seemed limited to openings and rules, while o3 played ruthlessly like a true chess player.
  • Carlsen quipped Grok was like a player knowing only theory who makes 'the worst blunders' such as repeatedly losing its queen at bad moments.
  • The tournament outcome intensified the rivalry between OpenAI and xAI and showed that, despite talent at everyday tasks, AI still has room to improve at chess.
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The Independent broke the news in London, United Kingdom on Thursday, August 7, 2025.
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