z-ai

Z.ai: GLM 4.5 Air

Z.ai: GLM 4.5 Air is designed for extensive text-based tasks with a context length of 131,072 tokens and supports both reasoning and tool integration. It accepts text inputs and can generate substantial responses, up to 98,304 output tokens at once. The model is equipped to handle complex queries requiring logical reasoning and external tools. Given its benchmark blended score of 26.3 across one independent test, Z.ai: GLM 4.5 Air performs well in text-focused applications. It should be considered by users prioritizing cost-effectiveness, with a pricing structure of $0.13 per thousand input tokens and $0.85 per thousand output tokens. For those seeking robust text processing capabilities without the need for structured outputs or extensive benchmark coverage, this model stands as a competitive choice in its price range.

Quality Score
85/100
price + capability + benchmarks
Input Price
$0.13
per 1M tokens
Output Price
$0.85
per 1M tokens
Context Window
131,072
tokens

Benchmark results

Independent, published benchmarks. Blended score 26.3 across 1 benchmark, last refreshed 2026-07-21. How scoring works →

BenchmarkMeasuresScore
AI Index broad capability composite 27.3
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 →

JobTokensCost
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

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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.