Z.ai: GLM 4.5 Air
Analysis Summary
Z.ai: GLM 4.5 Air sits in the Professional tier on our leaderboard, ranked #10 of 565 published models on overall intelligence. At $0.125 input and $0.850 output per 1M tokens, it is among the most expensive on the market. It offers a standard large context window and supports tool use, function calling, and reasoning.
Editorial notes
Z.ai GLM 4.5 Air delivers strong coding and agentic benchmarks at low cost with tool use and function calling; math scores are high and the price-performance ratio is competitive, though provider adoption outside Asia is limited.
Assessed May 31, 2026
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How Z.ai: GLM 4.5 Air compares
Z.ai: GLM 4.5 Air ranks #148 of 370 AI models we track for overall intelligence, #119 of 307 for coding, #125 of 282 for agentic tasks. Its 131K-token context window is larger than 60% of the models we list. At $0.13 per million input tokens it is cheaper than 60% of comparable models.
About Z.ai: GLM 4.5 Air
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..
Capabilities
Performance Indices
Source: Artificial Analysis
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does Z.ai: GLM 4.5 Air stack up?
Compare side-by-side with other professional models.
Model Information
| OpenRouter ID |
z-ai/glm-4.5-air
|
| Provider | z-ai |
| Release Date | July 25, 2025 |
| Context Length | 131,072 tokens |
| Max Completion | 131,070 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.13 | $0.000125 |
| Output | $0.85 | $0.000850 |
Live Performance
Live endpoint metrics, refreshed every 30 minutes.
Leaderboard Categories
External Resources
Frequently asked questions about Z.ai: GLM 4.5 Air
How much does Z.ai: GLM 4.5 Air cost?
Z.ai: GLM 4.5 Air costs $0.13 per million input tokens and $0.85 per million output tokens.
What is the context window of Z.ai: GLM 4.5 Air?
Z.ai: GLM 4.5 Air has a context window of 131,072 tokens (131K).
Is Z.ai: GLM 4.5 Air good for coding?
On our coding benchmark index, Z.ai: GLM 4.5 Air ranks #119 of 307 models, placing it in the broader range of the field for code generation and debugging.
What can Z.ai: GLM 4.5 Air do?
Z.ai: GLM 4.5 Air supports tool use and function calling.
Who created Z.ai: GLM 4.5 Air?
Z.ai: GLM 4.5 Air is developed by Z.ai and was released on July 25, 2025.
