GLM-5.2 from Z.ai leads Artificial Analysis Intelligence Index among open weights — 744B parameters, beats GPT-5.5 on long-horizon coding benchmarks at roughly one-sixth the price
Z.ai's GLM-5.2 (744B parameters) leads the Artificial Analysis Intelligence Index among open-weight models, beating GPT-5.5 on long-horizon coding benchmarks at roughly one-sixth the price. The combined leadership-and-economics positioning establishes GLM-5.2 as the H2 2026 open-weight benchmark-and-cost reference.
The substantive piece is the leadership-plus-economics combination at scale. GLM-5.2's 744B-parameter scale matches closed-source frontier-lab parameter counts; the Artificial Analysis Intelligence Index leadership among open weights and the GPT-5.5 beat on long-horizon coding establish capability parity; the 1/6 price establishes economics dominance. Each dimension individually is meaningful; the combination across all three is what positions GLM-5.2 as the H2 2026 open-weight reference point.
The competitive read against earlier GLM-5.2 coverage with detailed benchmark numbers is that the Intelligence Index leadership claim adds further validation alongside the SWE-Bench Pro and FrontierSWE numbers. MiniMax M3's SWE-Bench Pro leadership at 59% and GLM-5.2's broader Intelligence Index leadership represent parallel Chinese-open-weight leadership claims on different benchmark dimensions.
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