Z.ai (Zhipu) · Released Jul 28, 2025GLM-4.5-Air
Lighter GLM-4.5 variant for fast coding assistance and cheaper agents.
- Capability
- —No ECI score yet
- Input
- $0.20per 1M tokens
- Output
- $1.10per 1M tokens
- Context
- 131K98K max output
What it costs
- Input
- $0.20per million tokens
- Output
- $1.10per million tokens
- Cached input
- $0.03per million tokens
- Blended (3:1)
- $0.425cheaper than 64% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $0.95 |
| Team assistant25M input + 5M output tokens | $10.50 |
| Production app250M input + 50M output tokens | $105.00 |
Official Z.AI API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for GLM-4.5-Air yet.
The details
- Lab
- Z.ai (Zhipu)
- Released
- Jul 28, 2025
- Knowledge cutoff
- Apr 2025
- Context window
- 131,072 tokens
- Max output
- 98,304 tokens
- Inputs
- Text
- Output
- Text
- Reasoning
- Can be switched on or off
- Tool calling
- Yes
- Structured output
- No
- Weights
- Open weights
- API model ID
glm-4.5-airon Z.AI- Availability
- 13 API providerslisted on models.dev
What Z.ai (Zhipu) claims
Published by the lab at launch. Settings vary, so compare these only with care.
More from Z.ai (Zhipu)
About GLM-4.5-Air
How much does GLM-4.5-Air cost?
GLM-4.5-Air costs $0.20 input / $1.10 output per million tokens (official Z.AI API price). Cached input is $0.03 per million tokens. At a 3:1 input-to-output mix that is $0.425 per million tokens, cheaper than 64% of the 360 priced models we track.
What is the context window of GLM-4.5-Air?
GLM-4.5-Air accepts up to 131,072 tokens per request and can write up to 98,304 tokens in one response.
How good is GLM-4.5-Air?
Epoch AI has not published a Capabilities Index score for GLM-4.5-Air yet.
Is GLM-4.5-Air open source?
Yes. Z.ai (Zhipu) publishes the weights, so it can be downloaded and self-hosted.
What inputs does GLM-4.5-Air support?
GLM-4.5-Air accepts text and replies in text. It is a reasoning model, supports tool calling.
When was GLM-4.5-Air released?
Z.ai (Zhipu) released GLM-4.5-Air on Jul 28, 2025. Its training data runs to Apr 2025.
What are the best alternatives to GLM-4.5-Air?
The closest current models from other labs on capability, price and release date are Seed 1.6 Vision (ByteDance Seed, $0.119 / $1.19), Gemma-SEA-LION-v4-27B-IT (AI Singapore, $0.351 / $0.555), Qwen3 Coder Flash (Alibaba (Qwen), $0.30 / $1.50) and Llama 3.1 Nemotron 70B Instruct (NVIDIA, $0.478 / $0.504).