Z.ai: every model, side by side

GLM-5.1's gain over its predecessor is duration. Where earlier models were built around minute-long interactions, it works a single task for more than 8 hours, planning, executing and correcting itself until it has something engineering-grade to hand back.

Z.ai's GLM-5 Turbo, for fast inference in agent-driven environments such as OpenClaw. Tuned for long execution chains: instruction decomposition, tool use, scheduled and persistent execution, and stability across extended tasks.