The battle to determine the world's strongest AI-based chess model will be decided today when Grok 4 takes on o3 in the final.

The event hosted by Google's DeepMind and Kaggle, a data science firm, had eight general-purpose AI language models rolled out by leading research labs, competing in a single-elimination tournament.

DeepSeek R1, Claude Opus 4, Gemini 2.5 Pro, Gemini 2.5 Flash, Kimi K2, and o4-mini were the other AI models.

Grok is an AI chatbot developed by X.AI Corp, an initiative of Elon Musk, while o3 is a generative pre-trained transformer, one of the key products of OpenAI, which Sam Altman co-founded.

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According to Take Take Take, the platform hosting the tournament, hardcoded chess engines such as Stockfish and AlphaZero are not participating in the event. The participating AI models are ones that were "designed for broad reasoning tasks such as writing, coding and problem-solving".

Three years ago, Musk said: Chess is a simple game. "Understandable when all we had to play with were squirrels and rocks, but now we have computers," he said as a reason.

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Grok defeated Gemini 2.5 Pro 3-2 in the semifinals, while o3 has had an unbeaten campaign, starting with a 4-0 drubbing of Kimi K2 and victory by the same margin en route to the final.

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