Z.ai: GLM 4.5 Air

z-ai/glm-4.5-air

Released Jul 25, 2025131,072 context

$0.13/M input tokens$0.85/M output tokens

GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications. Like GLM-4.5, it adopts the Mixture-of-Experts (MoE) architecture but with a more compact parameter size. GLM-4.5-Air also supports hybrid inference modes, offering a "thinking mode" for advanced reasoning and tool use, and a "non-thinking mode" for real-time interaction. Users can control the reasoning behaviour with the reasoning enabled boolean. Learn more in our docs

Z.ai: GLM 4.5 Air

z-ai/glm-4.5-air

Released Jul 25, 2025131,072 context

$0.13/M input tokens$0.85/M output tokens

GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications. Like GLM-4.5, it adopts the Mixture-of-Experts (MoE) architecture but with a more compact parameter size. GLM-4.5-Air also supports hybrid inference modes, offering a "thinking mode" for advanced reasoning and tool use, and a "non-thinking mode" for real-time interaction. Users can control the reasoning behaviour with the reasoning enabled boolean. Learn more in our docs

Recent activity on GLM 4.5 Air

Total usage per day on OpenRouter

Prompt

649M

Completion

31.5M

Reasoning

10.7M

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.