ChatGLM-6BOpen Weight

ChatGLM-6B was released by Z.ai on Tuesday, Mar 14 2023.

ChatGLM-6B 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.

ChatGLM-6B is reported at 6B parameters.

Partly. ChatGLM-6B 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.

It was followed by GLM-4 on Jan 16 2024.