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reasoning-models

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JUN 24, 2026

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The open-weight reasoning gap is now 3.4 months, and the math is public

On June 16, GLM-5.2 became the leading open-weight model on the Artificial Analysis Intelligence Index v4.1 at 51, just 3.4 months behind an equally capable closed model, down from a 9.8-month gap in December 2024.