Are China's Open-Source Models 'Exposed'? Artificial Analysis v5 Reshuffle Reorders the Leaderboard
After Artificial Analysis upgraded its Intelligence Index to v5, Chinese open-source models collectively slipped as U.S. frontier closed models led. Kimi K3.1 Pro entered the top ten but has not opened weights; among active open-weight domestic models, DeepSeek V4.1 Flash 1017 and GLM 5.3 ranked 14th and 15th, below Anthropic's entry-level Claude Haiku 5.5. The new index for the first time weights 60% on private test sets, adds FrontierCode 2.0 and Terminal-Bench-Science, and upgrades HLE, omniscience and physics reasoning. Some revived old critiques of distillation and benchmark overfitting, but analysts note the "ruler" changed: the v5 puts far more weight on real-world coding and long-horizon scientific workflows, not just general ability.
Source: NetEase / Weijin Research, Oct 30, 2026 | 2026-10-30
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