Z.ai: GLM 4.5 Air
Z.ai: GLM 4.5 Air is designed to handle text inputs within a context length of 131,072 tokens and supports both reasoning and tools integration. This model can process various tasks without structured output requirements, making it versatile for multiple use cases. While Z.ai: GLM 4.5 Air scores moderately well with a blended benchmark score of 26.3 across one independent benchmark, its price point of $0.13 per million input tokens and $0.85 per million output tokens could make it less competitive in scenarios requiring frequent text generation or extensive computational resources. Users who prioritize cost-effectiveness for general text processing tasks might find this model a suitable choice.
Benchmark results
Independent, published benchmarks. Blended score 26.3 across 1 benchmark, last refreshed 2026-08-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 27.5 |
- Model ID
- z-ai/glm-4.5-air
- Vendor
- z-ai
- Released
- July 2025
- Tokenizer
- Other
- Input Modalities
- text
- Output Modalities
- text
- Max Output
- 98,304 tokens
- Tool Calling
- ✓ supported
- Structured Output
- not supported
- Reasoning Mode
- ✓ supported
- Vision
- text only
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.13/M input and $0.85/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | under $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.11 |
| A month of a busy support chatbot | 5M in / 2M out | $2.35 |
Similar models
Z.ai: GLM 4.5V
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Z.ai: GLM 5 Turbo
Z.ai: GLM 5.2
Z.ai: GLM 5
Quick answers
- How much does Z.ai: GLM 4.5 Air cost?
- $0.13 per million input tokens and $0.85 per million output tokens.
- What is Z.ai: GLM 4.5 Air's context window?
- 131,072 tokens, roughly 196 pages of text in a single request.
- Does Z.ai: GLM 4.5 Air support tool calling?
- It supports tool calling, a reasoning mode.
- Can Z.ai: GLM 4.5 Air process images?
- No, it is text-only on the input side.