GLM-4.5-Air
zai/glm-4-5-airBy Z.AI / Zhipu · family: glm-air · released 2025-07-28 · knowledge: 2025-04
Prices in USD per 1M tokens. Unknown means the provider does not publish per-token pricing.
Capabilities
Model fit scores
0–100 · higher is betterThese scores reward declared capabilities, context size, price and provider availability — they are not benchmark results. Use them as a directional signal alongside your own evaluation.
Coding62
- Tool calling40/40
- Structured output0/20
- Reasoning10/10
- Context window (100K → 1M)2/20
- Provider availability10/10
Agents75
- Tool calling35/35
- Structured output0/25
- Reasoning15/15
- Output token limit15/15
- Provider availability10/10
JSON / structured output47
- Structured output / JSON mode0/50
- Tool calling20/20
- Temperature control10/10
- Price-friendly for high-volume17/20
Cost efficiency65
- Headline price (log-scaled)60/95
- Has prompt-cache pricing5/5
Long context46
- Context window (100K → 2M)36/90
- Has published price for full window10/10
Production-readiness96
- Number of independent providers40/40
- Has published per-token price20/20
- Context window ≥ 8K15/15
- No data inconsistencies across providers6/10
- Official model (not derivative)15/15
Cost Efficiency Index
Open full calculator →Estimated cost using the recommended provider's headline rate. Each scenario fixes average input/output tokens — the assumptions are shown in the third column.
| Scenario | Cost | Assumption |
|---|---|---|
RAG answer per 1,000 RAG answers | $1.55 < $0.01 per request | 5K input tokens (query + 4 retrieved chunks of ~1K each) and a 500-token answer. Typical SaaS knowledge-base bot. |
Support ticket triage per 10,000 tickets | $3.10 < $0.01 per request | 1K input tokens (ticket body + system prompt) and a 100-token JSON classification reply. High-volume customer support. |
Data extraction per 1,000 documents | $0.95 < $0.01 per request | 2K input tokens (a single document page) and a 500-token JSON extraction. ETL / invoice / form pipelines. |
Code review per 1,000 PRs | $2.70 < $0.01 per request | 8K input tokens (diff + surrounding files) and a 1K-token review comment. PR-bot workloads. |
Agent step per 1,000 steps | $3.06 < $0.01 per request | 12K input tokens (long-running tool history) and a 600-token tool-call decision. Cost per agent step. |
Pricing detail
Recommended pricing from zai · glm-4.5-air
Cheapest provider: zai-coding-plan · Unknown input + Unknown output
Available on 16 providers
| Provider | Provider model id | Input / 1M | Output / 1M | Context | Released |
|---|---|---|---|---|---|
| Z.AI zai | glm-4.5-air | $0.200 | $1.10 | 131K | 2025-07-28 |
| Z.AI Coding Plan zai-coding-plan | glm-4.5-air | Unknown | Unknown | 131K | 2025-07-28 |
| Zhipu AI Coding Plan zhipuai-coding-plan | glm-4.5-air | Unknown | Unknown | 131K | 2025-07-28 |
| Zhipu AI zhipuai | glm-4.5-air | $0.200 | $1.10 | 131K | 2025-07-28 |
| OpenRouter openrouter | z-ai/glm-4.5-air | $0.200 | $1.10 | 128K | 2025-07-28 |
| Vercel AI Gateway vercel | zai/glm-4.5-air | $0.200 | $1.10 | 128K | 2025-07-28 |
| 302.AI 302ai | glm-4.5-air | $0.114 | $0.286 | 131K | 2025-07-29 |
| SiliconFlow (China) siliconflow-cn | zai-org/GLM-4.5-Air | $0.140 | $0.860 | 131K | 2025-07-28 |
| submodel submodel | zai-org/GLM-4.5-Air | $0.100 | $0.500 | 131K | 2025-07-28 |
| ZenMux zenmux | z-ai/glm-4.5-air | $0.110 | $0.560 | 128K | 2025-07-25 |
| NovitaAI novita-ai | zai-org/glm-4.5-air | $0.130 | $0.850 | 131K | 2025-10-13 |
| Qiniu qiniu-ai | glm-4.5-air | Unknown | Unknown | 131K | 2025-08-05 |
| Kilo Gateway kilo | z-ai/glm-4.5-air | $0.130 | $0.850 | 131K | 2025-07-28 |
| Cortecs cortecs | glm-4.5-air | $0.220 | $1.34 | 131K | 2025-08-01 |
| SiliconFlow siliconflow | zai-org/GLM-4.5-Air | $0.140 | $0.860 | 131K | 2025-07-28 |
| LLM Gateway llmgateway | glm-4.5-air | $0.200 | $1.10 | 131K | 2025-07-28 |
Data inconsistencies across providers
- context_window varies: 128000, 131000, 131072
- release_date varies (span 80d): 2025-07-25, 2025-07-28, 2025-07-29, 2025-08-01, 2025-08-05, 2025-10-13
Different providers report different values for this model. Quick facts above use the representative provider; consult the table for per-provider truth.
Frequently asked questions
How much does GLM-4.5-Air cost?
GLM-4.5-Air costs $0.200 per 1M input tokens and $1.10 per 1M output tokens, sourced from zai. Cache reads, audio tokens and >200K-context tiers (where applicable) are listed in the Pricing detail block above.
What is the context window of GLM-4.5-Air?
GLM-4.5-Air has a context window of 131K tokens, with a max output of 98K tokens per reply. This is the total combined size of prompt + completion.
Does GLM-4.5-Air support tool calling?
Yes. GLM-4.5-Air supports tool calling (function calling). This makes it suitable for production agent and automation workloads where the model has to invoke external functions reliably.
Does GLM-4.5-Air support structured output / JSON mode?
Support for structured output / JSON-schema-constrained decoding is not reported for GLM-4.5-Air in our data source. Verify with Z.AI / Zhipu's official documentation before relying on it in production.
Can GLM-4.5-Air accept image input?
No. GLM-4.5-Air only accepts text as input. If you need image input, see our /capabilities/vision list for current vision-capable models.
Is GLM-4.5-Air open-weight?
Yes. GLM-4.5-Air's weights are publicly available, so you can self-host or fine-tune. Note that open weights ≠ open source — the training data and code are typically not released.
What are the best alternatives to GLM-4.5-Air?
If GLM-4.5-Air doesn't fit, consider GLM-5, GLM-4.7, GLM-5.1. Each one targets the same use case — see the Related links below for direct head-to-head pages.
Where does this data come from?
All numbers come from the public models.dev API and are normalised into a single canonical model record. We re-pull daily and write any changes (price, context, capability) to the /changelog page.
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Capability lists this model is in
Last updated:
Data is sourced from models.dev and normalized for comparison. Prices and capabilities may change. Always verify critical production decisions with the provider's official documentation.