GLM-4-9BOpen Weight

GLM-4-9B was released by Z.ai on Wednesday, Jun 5 2024.

GLM-4-9B was built by Z.ai. Chinese AI lab spun out of Tsinghua University (formerly Zhipu AI), building the open-weight GLM family. Rebranded internationally as Z.ai in 2025.

GLM-4-9B is reported at 9B parameters.

Partly. GLM-4-9B is an open-weight model: the trained weights are free to download and run locally or on your own infrastructure, but the training data and code are not fully released and the license may restrict some commercial uses. It is not open source in the strict sense.

Z.ai's previous tracked release was GLM-4 on Jan 16 2024, 141 days earlier. It was followed by GLM-4-Plus on Aug 29 2024.