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Z.ai

Z.ai develops the GLM model family and publishes open-weight coding, reasoning, multimodal, and agent-oriented models.

Official siteVerified Oct 5, 2026
Model families
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Models
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Company details

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Model families

Model Familyactive

GLM-5.3

GLM-5.3 is Z.ai's current open-weight GLM generation for coding, reasoning, long-horizon agentic tasks, and efficient multimodal inference.

Models

Modelactive

GLM-5.3

GLM-5.3 is Z.ai's 744B-parameter open-weight MoE flagship with 40B active parameters and a 1,048,576-token context window for coding, reasoning, and long-horizon agentic work.

Modelactive

GLM-5.3-Flash

GLM-5.3-Flash is Z.ai's 320B-parameter open-weight efficiency model with 18B active parameters, a 1,048,576-token context window, and a hybrid sparse/linear-attention multimodal architecture.