GLM-5
Follows Z.ai’s open-weight GLM-5 flagship line, from 744B base weights and eight-hour autonomous runs to the cheaper 320B Flash, and shows how the generation balances capability against cost.
GLM-5 is Z.ai’s flagship open-weight model line for complex systems engineering and long-horizon agent tasks. Total parameters grew from 355B on GLM-4.5 to 744B, with weights released under MIT on Hugging Face. GLM-5.1 stretches a single autonomous run to eight hours, while GLM-5.3-Flash uses 320B total and 18B active parameters to push API prices to a fraction of the flagship.
