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.

Year	Contribution	Source
2021	GLM: General Language Model Pretraining with Autoregressive Blank Infillingarxiv.org	arxiv.org
2022	GLM-130B: An Open Bilingual Pre-trained Modelarxiv.org	arxiv.org
2024	ChatGLM: A Family of Large Language Models from GLM-130B to GLM-4 All Toolsarxiv.org	arxiv.org
2025	GLM-4.5: Agentic, Reasoning, and Coding (ARC) Foundation Modelsarxiv.org	arxiv.org

Model	Standing
GLM-5.3Flagship	#21 on the Models podium
GLM 4.6	#30 on the Models podium

Where	Link
Website	z.ai
GitHub	zai-org
Hugging Face	zai-org
X	@Zai_org
Models	2 ranked models on Models

Z.ai (Zhipu AI)

Known for

Models

Funding and compute

Links

Lab changes by email