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GLM 4.5 Air

Fast and lightTools

Z.ai · Released July 2025 · Knowledge cutoff December 2024

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...

It is part of Z.ai's GLM series, an open-weight line where the 5.x generation leads, Turbo servings cut latency and cost, and 5V adds vision.

Facts and pricing

Provider
Z.ai
Context window
131K tokens
Input price
1.4 credits / 1M tokens ($0.13 raw)
Output price
9.3 credits / 1M tokens ($0.85 raw)
Vision (image input)
No
Tool calling
Yes
Extended reasoning
No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.10x margin. Raw prices shown per 1M tokens.

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GLM 4.5 Air

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What GLM 4.5 Air is best for

Example prompts

Prompts that suit a fast and light model like GLM 4.5 Air:

Z.ai family

ModelContextInput cr/MOutput cr/MReleased
GLM 5.3 Flash (batch)1.0M1.75.5August 2026
GLM 5.3 Flash1.0M0.832.8August 2026
GLM 5.31.0M15.448.4August 2026
GLM 5.21.0M10.633.4June 2026
GLM 5.2 (free)256K00June 2026
GLM 5.1200K10.633.4April 2026
GLM 5V Turbo203K13.244.0April 2026
GLM 5 Turbo203K13.244.0March 2026
GLM 5198K6.621.1February 2026
GLM 4.7 Flash203K0.664.4January 2026

All 16 Z.ai models

Frequently asked questions

What is GLM 4.5 Air?
GLM 4.5 Air is an AI model by Z.ai. 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...
How much does GLM 4.5 Air cost on Zeplik?
Input tokens cost 1.4 credits per million and output tokens 9.3 credits per million (1 credit = $0.10; the raw provider rates are $0.13 and $0.85 per million). New accounts start with free credits.
How long can a conversation with GLM 4.5 Air be?
GLM 4.5 Air has a 131K-token context window (131,072 tokens), which covers the conversation plus any documents you attach.
Does GLM 4.5 Air support images and tools?
GLM 4.5 Air is text-only and supports tool calling.

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More you can do with GLM 4.5 Air

GLM 4.5 Air - Z.ai AI Model | Zeplik Chat