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Z.ai: GLM 5.2

z-ai/glm-5.2:free

Model weights

GLM 5.2 is a large-scale reasoning model from Z.ai. It supports text input and output with a 1M-token context window, and is suited for long-horizon agent workflows, project-level software engineering, and complex multi-step automation.

Reasoning efforts high and xhigh are supported; xhigh maps to max reasoning. It is particularly strong at coding and tool use across long-running tasks, able to maintain engineering context and follow standards consistently through a full development workflow, from requirements to multi-platform deployment, in a single task.

Modalities

Price

Free

Context

1M

Released

Jun 16, 2026

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Frequently asked questions

GLM 5.2 is a large-scale reasoning model from Z.ai. It supports text input and output with a 1M-token context window, and is suited for long-horizon agent workflows, project-level software engineering, and complex multi-step automation. Reasoning efforts high and xhigh are supported; xhigh maps to max reasoning.

Yes. The pricing shown on this page for GLM 5.2 is zero, so you are not charged for prompt or completion tokens. Free endpoints are rate limited — see the rate limit docs.

GLM 5.2 has a 1,048,576 token context window.

GLM 5.3 Flash, GLM 5.3, GLM 5.1 and 10 more are other text models from Z.ai.

GLM 5.2 was released on June 16, 2026.