GLM-5.2 is the leading open weights model on the Intelligence Index v4.1 (xcancel.com)

Z ai has announced that its GLM-5.2 model is now the leading open weights model on the Artificial Analysis Intelligence Index, scoring 51—an 11-point improvement over its predecessor, GLM-5.1. Maintaining the same scale of 744 billion total parameters and 40 billion active parameters, GLM-5.2 has shown significant advancements particularly in scientific reasoning, making it more competitive against established proprietary models such as GPT-5.5. Its cost-effectiveness is also notable; despite an increase in output token usage (43k per task), it remains the lowest-cost model at its intelligence level, priced at approximately $0.46 per task. This development is significant for the AI/ML community as it demonstrates a pivotal shift in open weights models, showcasing enhanced performance on critical benchmarks like GDPval-AA v2, where GLM-5.2 outperformed other leading models, including MiniMax-M3 and DeepSeek V4 Pro. The findings highlight not only the rapid advancement in open-source AI capabilities but also the potential for these models to rival proprietary counterparts in real-world applications, while still being accessible at a competitive price through various providers. This positioning reflects an exciting evolution in the landscape of AI/ML tools, making high-performance AI more accessible to developers and researchers.