GLM-5.3 hits the API at $1.4/$4.4 per million tokens

GLM-5.3, the open-source language model from Chinese startup z.ai, is now available via API with pricing unchanged from GLM-5.2 at $1.40 per million input tokens and $4.40 per million output tokens, while cached input costs $0.26 per million tokens and storage is temporarily free. The model reportedly delivers substantially stronger coding and long-horizon agent performance, and z.ai plans to release its weights publicly, though the exact release date and licensing terms have not been announced.