z-ai

Z.ai: GLM 4.5 Air

The GLM 4.5 Air from z-ai is a model that processes text inputs with a maximum context length of 131072 tokens and supports up to 98304 completion tokens per request. It can handle reasoning tasks and offers tool support for users who require these capabilities. This model may be worth considering by those seeking a balance between price and performance, as its blended benchmark score of 26.3 indicates decent results across independent assessments. However, the relatively high output token price of $0.85/M could offset potential benefits if not carefully managed. Its input token cost of $0.13/M is lower but still noteworthy in comparison to other models.

Open weights 106B parameters, about 59.2 GiB at Q4_K_M: fits comfortably on 0 of 17 consumer graphics cards in the PicksByCard catalog. See which cards run it →
Quality Score
85/100
price + capability + benchmarks
Input Price
$0.13
per 1M tokens · checked 2026-09-04
Output Price
$0.85
per 1M tokens · checked 2026-09-04
Context Window
131,072
tokens

Benchmark results

Independent, published benchmarks. Blended score 26.3 across 1 benchmark, last refreshed 2026-09-04. How scoring works →

BenchmarkMeasuresScore
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 →

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

Similar models

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.