GLM-5 is Zhipu AI's flagship 744B parameter Mixture-of-Experts (MoE) model, released on February 11, 2026. It is specifically engineered for "Agentic Engineering," excelling in complex system tasks and long-horizon planning. With a 200k context window and a focus on coding and factual accuracy, it rivals top proprietary models like Claude Opus 4.5 in logic density. While its empathy scores are lower (72.5), its instruction-following (92.5) and creative writing (84.5) capabilities make it a premier choice for open-weight engineering workflows.