Z.ai: GLM 4.5 Air (free)z-ai
Bottom Line
Z.ai: GLM 4.5 Air (free): Free/1M input, Free/1M output, 131K context. 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...
API Pricing (per 1M tokens)
| Input | Free |
| Output | Free |
| Cache Read | — |
| Cache Write | — |
| Blended (3:1) | $0.00 |
Specs & Performance
| Context Length | 131K |
| Max Output | 96K |
| Intelligence | — |
| Coding | — |
| Math | — |
| Speed | — |
| TTFT | — |
| CPS Grade | — |
| Input / Output Modalities | text → text |
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FAQ
How much does the Z.ai: GLM 4.5 Air (free) API cost?
Z.ai: GLM 4.5 Air (free) costs Free/1M input tokens and Free/1M output tokens. Blended cost at a 3:1 ratio is about $0.00/1M tokens.
What is the context window of Z.ai: GLM 4.5 Air (free)?
Z.ai: GLM 4.5 Air (free) supports a 131K token context window with up to 96K output tokens.
Is Z.ai: GLM 4.5 Air (free) worth it?
Z.ai: GLM 4.5 Air (free) has a CPS grade of — (score —), intelligence index —, coding index —. Use the compare page to benchmark against rivals.