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Z.ai model

GLM 5.1

GLM 5.1 is a Z.ai model tracked in Sim. It supports a 200k token context window. Pricing starts at $1.4/1M input tokens and $4.4/1M output tokens. Key capabilities include Temperature 0-1, Tool choice, Structured outputs. Best for reasoning-heavy tasks that need more deliberate model control.

Input price$1.4/1M
Cached inputN/A
Output price$4.4/1M
Context window200k
Max output131k tokens
ProviderZ.ai
UpdatedJul 10, 2026
Best forBest for reasoning-heavy tasks that need more deliberate model control.
Temperature0 to 1
Reasoning effortNot supported
VerbosityNot supported
Thinking levelsdisabled, enabled (default: enabled)
Structured outputsSupported
Tool choiceSupported
Computer useNot supported
Deep researchNot supported
Memory supportSupported
Max output tokens131k

Frequently asked questions

GLM 5.1 is a Z.ai model available in Sim. GLM 5.1 is a Z.ai model tracked in Sim. It supports a 200k token context window. Pricing starts at $1.4/1M input tokens and $4.4/1M output tokens. Key capabilities include Temperature 0-1, Tool choice, Structured outputs.

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