GLM 5.2

GLM 5.2 is Z.ai’s flagship model for long-context, long-horizon work. It is a strong fit for sustained coding, research, and tool-driven tasks that need to retain a large amount of context.

Model details

• Identifier: z-ai/glm-5.2
• Context window: 256K tokens
• Capabilities: Text · Reasoning · Tools

Best for

• Understanding large repositories and document collections
• Long-horizon coding and migration work
• Research and synthesis across many sources
• Complex tool use with extended task state
• Difficult reasoning where context retention matters

Platform defaults

When sampling parameters are omitted, Mixlayer applies:

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{
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  "temperature": 1.0,
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  "top_p": 0.95
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}

Working with long context

Provide only relevant material even when a large context window is available. Structure long inputs with clear headings, identify authoritative files or sources, and state the expected output before supplying supporting context.

Break very long agentic tasks into verifiable milestones. This makes tool results easier to evaluate and reduces the cost of recovering from a wrong turn.

See the official GLM 5.2 model card for upstream architecture and capabilities.