GLM-5.2 from Chinese lab Z.ai ranks #1 on the Artificial Analysis Intelligence Index at 51, ahead of MiniMax-M3 and DeepSeek V4 Pro. The Mixture-of-Experts model has 753 billion total parameters, 40 billion active per token, a million-token context, and an MIT license. Full weights are 1.51TB.
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Summary by ByteBrief
GLM-5.2 is probably the most powerful text-only open weights LLM