GLM-4

GLM-4 was Zhipu AI's hosted flagship generation introduced in early 2024, before the company adopted the Z.ai name. The release continued the GLM model line into a larger commercial assistant and API offering. It is useful to distinguish that original hosted model from subsequent downloadable models that also carried the GLM-4 name.

The GLM-4 technical report later described the family's work on pretraining, alignment and tool use. Those reports covered multiple models and later updates, so a result for one GLM-4 checkpoint is not automatically a launch result for every member of the family. The original release sits between the earlier bilingual ChatGLM assistants and the open-weight GLM-4-9B models published later in 2024.