GLM-5.2 tops open model leaderboard with 1.51TB weights

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.