GLM-5.2 is a new open weights model that has achieved the highest score on the Artificial Analysis Intelligence Index, surpassing other models such as MiniMax-M3 and DeepSeek V4 Pro. The model has shown improvements in various evaluations, particularly in scientific reasoning, and is available for use on multiple platforms. GLM-5.2 uses more output tokens per task than other leading open weights models, but is still considered cost-efficient. The model's performance is seen as a significant step forward in the development of artificial intelligence.