Question 1

What is Z.ai (Zhipu AI) known for?

Accepted Answer

The GLM models, spun out of Tsinghua University's KEG lab; GLM-4.5 and later are open weights. Landmarks: GLM: General Language Model Pretraining with Autoregressive Blank Infilling (2021); GLM-130B: An Open Bilingual Pre-trained Model (2022); ChatGLM: A Family of Large Language Models from GLM-130B to GLM-4 All Tools (2024); GLM-4.5: Agentic, Reasoning, and Coding (ARC) Foundation Models (2025).

Question 2

What kind of organization is Z.ai (Zhipu AI)?

Accepted Answer

Startup lab, founded in 2019, based in Beijing.

Z.ai (Zhipu AI)

Landmark work

GLM: General Language Model Pretraining with Autoregressive Blank Infilling

GLM-130B: An Open Bilingual Pre-trained Model

ChatGLM: A Family of Large Language Models from GLM-130B to GLM-4 All Tools

GLM-4.5: Agentic, Reasoning, and Coding (ARC) Foundation Models

Models

GLM-5.3

Funding and compute

IPO

Links

Added to Labs.