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 size. GLM-4.5-Air also supports hybrid inference modes, offering a "thinking mode" for advanced reasoning and tool use, and a "non-thinking mode" for real-time interaction. Users can control the reasoning behaviour with the `reasoning` `enabled` boolean. [Learn more in our
Context window
This model accepts 128K tokens in one request (~96K words of text).
What fits in one request
- FitsShort documentAbout 1,500 words of text
- FitsLong documentAbout 37K words of text
- Won't fitSmall codebaseAbout 150K words of text
- Won't fitFull novelAbout 375K words of text
Specifications
Context size, pricing, and release info in one place.
- Context window
- 128,000 tokens (128K)
- Max output tokens
- 32,000 tokens (32K)
- Speed tier
- balanced
- Provider
- Z Ai
- Release date
- Jul 2025
- Input cost
- $0.200/M / 1M tokens
- Output cost
- $1.10/M / 1M tokens
Capabilities
See which features this model supports, such as vision, tools, and streaming.
- Tool use
- Can call external tools and APIs
- Supported
- Function calling
- Structured function call interface
- Supported
- Extended thinking
- Shows its chain-of-thought reasoning
- Supported
- Streaming
- Returns tokens as they are generated
- Supported
- Prompt caching
- Reuse repeated prompt prefixes cheaply
- Supported
- Vision
- Accepts image inputs alongside text
- Not supported
- Web search
- Can browse the web during a request
- Not supported
- Batch API
- Process many requests asynchronously
- Not supported
Best for
Jump to a guide or ranking that matches each workload.
Compare GLM 4.5 Air
Open a side-by-side comparison with one click.
- GLM 4.5 Air vs Amazon Titan Text Express
GLM 4.5 Air has 204% larger context window
- GLM 4.5 Air vs Amazon Titan Text Lite
GLM 4.5 Air has 204% larger context window
- GLM 4.5 Air vs Amazon Titan Text Premier
GLM 4.5 Air has 204% larger context window
- GLM 4.5 Air vs Claude Instant
GLM 4.5 Air has 28% larger context window
- GLM 4.5 Air vs Anthropic Claude
GLM 4.5 Air has 28% larger context window
- GLM 4.5 Air vs Codellama 34b Instruct
GLM 4.5 Air has 3025% larger context window
Frequently asked questions
Short answers about context size and how this model behaves.
More from Z Ai
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