GLM-5.2 is the new leading open weights model on Artificial Analysis

Z ai's GLM-5.2 has become the leading open weights model on the Artificial Analysis Intelligence Index with a score of 51, outperforming competitors like MiniMax-M3 (44) and DeepSeek V4 Pro (44), while maintaining comparable performance to proprietary models like GPT-5.5. The 744B parameter model achieved significant improvements over its predecessor GLM-5.1, particularly in scientific reasoning, and offers competitive pricing at $1.4/$4.4/$0.26 per million tokens on the first-party API. GLM-5.2 features an expanded 1M token context window and is available through multiple third-party providers including DeepInfra and Fireworks.