智谱 AI 推出 GLM-5.3-Flash 夜间免费使用活动

On September 4, 2026, IT Home reported that ZhiPu AI announced the launch of a 'Flash × ZCode' night-time free usage promotion for its GLM Coding Plan. The promotion, which runs from September 3 to 20, 2026, offers free usage of GLM-5.3-Flash model credits from 23:00 to 09:00 daily, automatically applied to all paid plan users. The promotion is exclusive to the GLM-5.3-Flash model, which is the first native multimodal model in the GLM-5 series, supporting a 1 million token context window and multimodal input. The model previously appeared under the anonymous name 'Ox Alpha' on the OpenRouter platform and has since ranked first on the platform, with usage exceeding that of DeepSeek. It scored 57 on the Artificial Analysis Intelligence Index (AA), placing it in the global forefront of model capabilities. The model is suitable for code generation, understanding, and repair, as well as office and document tasks, and has shown significant improvements in financial and legal tasks.