GLM 5.2 Performance Benchmarks (artificialanalysis.ai)

OpenAI has announced the release of GLM-5.2 (max), an advanced language model that debuted in June 2026. This model stands out in the AI/ML community due to its impressive performance on the Artificial Analysis Intelligence Index, scoring 51, which is significantly above the average score of 24 for similar open weight models. GLM-5.2 (max) is particularly noted for its capacity to generate responses at a speed of 112 tokens per second, making it one of the fastest in its class. However, its usage comes at a premium price, costing $1.40 per million input tokens and $4.40 per million output tokens, well above the industry average. Key technical features include a substantial context window of 1 million tokens and a total of 753 billion parameters, although only 40 billion are active during inference. This model employs a Mixture of Experts design, facilitating the use of numerous parameters while optimizing performance. Its ability to handle extensive reasoning tasks effectively positions GLM-5.2 (max) as a formidable tool for various applications, despite its verbosity and higher costs, suggesting important implications for budget-conscious researchers and developers in the rapidly evolving landscape of AI technologies.