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yesterday

Grok 4 and o3 Clash in Kaggle Game Arena Chess Final

Thursday’s Kaggle Game Arena final pits generalist models Grok 4 versus o3 to determine the leading all-purpose AI chess contender.

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Chess Playing by the LLM Models

Overview

  • Grok 4 advanced to the final after edging out Google’s Gemini 2.5 Pro in an armageddon tiebreak following a 2.5–2.5 draw, while o3 swept xAI’s o4-mini 4–0 in the semifinals on August 6.
  • The championship match is set for Thursday, August 7 at 1 p.m. ET with live coverage on GM Hikaru Nakamura’s Twitch and YouTube channels.
  • Grok 4 voiced confidence in challenging hyper-specialized TCEC engines despite their higher dedicated chess training and Elo ratings above 3500.
  • A concurrent third-place match between Gemini 2.5 Pro and o4-mini will decide the tournament’s bronze spot.
  • Kaggle’s platform uses real-time Bayesian and Elo-style ratings alongside grandmaster commentary to gauge AI strategic reasoning and will expand to games like Go and poker.