Overview

• OpenAI’s o3 swept xAI’s Grok 4 4–0 in the final to claim the championship.
• Google’s Gemini 2.5 Pro earned the bronze medal by defeating OpenAI’s o4-mini 3.5–0.5 in the third-place match.
• Elon Musk called Grok 4’s chess prowess a “side effect” and said xAI invested little effort in its performance.
• Analysts have estimated Grok’s Elo rating at 1600–1800 and Gemini’s at 1500–1700, while Magnus Carlsen placed o3 near 1200 and Grok around 800.
• The exhibition was the first major public contest of general-purpose LLMs in chess since IBM’s Deep Blue in 1997.