GLM 4.5

The GLM-4.5 series is built on a self-developed Mixture of Experts architecture, designed to integrate reasoning, coding, and agentic decision-making into a single, cohesive framework. By moving away from specialized models that focus on a single skill, this architecture provides a balanced intelligence capable of handling the multifaceted requirements of modern agentic applications. The flagship model utilizes 355 billion total parameters with 32 billion active parameters, while the streamlined GLM-4.5-Air version uses 106 billion total parameters and 12 billion active parameters, ensuring that developers can choose between maximum performance and high-efficiency deployment.

These models feature a dual-mode design that allows users to toggle between a thinking mode for complex, multi-step reasoning and a non-thinking mode for instant, snappy responses. This flexibility makes the series particularly well-suited for high-volume agent deployments and tool orchestration tasks where both accuracy and speed are critical. By securing top-tier performance rankings among open-source models across multiple benchmarks, the series offers a robust foundation for developers looking to build scalable, cost-effective AI agents that maintain high standards in tool selection and logical execution.