Z.ai

GLM-4.5-Air

CTX131K

59Quality

Reasoning · Tools

Input$0.20/M

Output$1.10/M

Lighter GLM-4.5 variant for fast coding assistance and cheaper agents

Open weightsMIT611/1044

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Z.aiTextCommon

GLM-4.5-Air

Lighter GLM-4.5 variant for fast coding assistance and cheaper agents

glm-4.5-air

Type: Text
Quality: 59 · Top 41% on the LMArena Text
Context window: 131,072 tokens
Max output: 98,304 tokens
Input price: $0.20 / 1M tokens
Output price: $1.10 / 1M tokens
Cache read: $0.03 / 1M tokens
Cache write: Free
Parameters: 110B (110,468,824,832)
Downloads: 760K in the last 30 days
Likes: 650
Access to weights: Open download
Released: Jul 28, 2025
Knowledge cutoff: Apr 2025
Takes in: Text
Puts out: Text
Reasoning: Yes
Tool calling: Yes
Structured output: No
File attachments: No
Access: Open weights
License: MIT
Rarity: Common
Set number: 611/1044

Open Z.ai docs Weights on Hugging Face Quality 59 Where to run it 20 Race it 88 tok/s Meet its creature Battle Step 3.7 Flash

License read from the model’s Hugging Face card. Specs from models.dev, downloads from Hugging Face, last changed Oct 19, 2026. Official source: docs.z.ai.

How good is it?

Public leaderboard scores for GLM-4.5-Air, refreshed daily from Epoch AI and LMArena.

Top 41% of the 416 models on the LMArena Text: #171.

Quality is the share of a leaderboard’s models this one beats, from 0 to 100. Chat models are rated on Epoch AI’s Capabilities Index when it lists them, otherwise on LMArena; image and video models on LMArena’s image and video arenas.

Leaderboards

LMArena Text#171 of 416
People compare two anonymous answers and vote for the better one.1,384 rating
LMArena Text · Coding#178 of 411
The text arena’s coding prompts only.1,397 rating
LMArena Text · Math#167 of 400
The text arena’s math prompts only.1,396 rating
LMArena Text · Creative writing#176 of 414
The text arena’s creative writing prompts only.1,343 rating

Scores from LMArena, licensed CC BY 4.0. Boards list models under their own names, so a close match is shown with the name it was scored under. Credits

Where to run it

18 providers sell GLM-4.5-Air through an API, and 2 Hugging Face hosts serve it. Prices are per million tokens, cheapest first.

CheapestZenMux$0.12 in · $0.29 out
From the labZ.AI$0.20 in · $1.10 out
Fastest on Hugging FaceNovita88 tokens/s

API providers

Provider	Input	Output	Context
ZenMuxCheapest paid`z-ai/glm-4.5-air`	$0.12	$0.29	128K
submodel`zai-org/GLM-4.5-Air`	$0.10	$0.50	131K
NanoGPT`z-ai/GLM-4.5-Air`	$0.12	$0.80	128K
DevPass (LLM Gateway)`glm-4.5-air`	$0.13	$0.85	131K
Kilo Gateway`z-ai/glm-4.5-air`	$0.13	$0.85	131K
LLM Gateway`embercloud/glm-4.5-air`	$0.13	$0.85	131K
Novita AI`zai-org/glm-4.5-air`	$0.13	$0.85	131K
OpenRouter`z-ai/glm-4.5-air`	$0.13	$0.85	131K
SiliconFlow`zai-org/GLM-4.5-Air`	$0.14	$0.86	131K
SiliconFlow (China)`zai-org/GLM-4.5-Air`	$0.14	$0.86	131K

Show 8 more providers

Provider	Input	Output	Context
Impossibl`zai/glm-4.5-air`	$0.20	$1.10	131K
Merge Gateway`zai/glm-4.5-air`	$0.20	$1.10	128K
OrcaRouter`z-ai/glm-4.5-air`	$0.20	$1.10	131K
Tempr Gateway`zai/glm-4.5-air`	$0.20	$1.10	131K
Vercel AI Gateway`zai/glm-4.5-air`	$0.20	$1.10	128K
Z.AIOfficial`glm-4.5-air`	$0.20	$1.10	131K
Zhipu AI`glm-4.5-air`	$0.20	$1.10	131K
Qiniu`glm-4.5-air`	—	—	131K

Hugging Face Inference Providers

Host	Input	Output	Context	Speed	First token
NovitaFastestTools	$0.13	$0.85	131K	88 tok/s	1.1s
Z.aiTools	—	—	—	72 tok/s	1.9s

From models.dev and Hugging Face, checked daily. Resellers’ listings can lag behind their price pages, so confirm with the provider before you commit.

Face off

Current text models from other labs at a similar output price.

GLM-4.5-Air

GLM-4.5-Air

How good is it?

Leaderboards

Where to run it

API providers

Hugging Face Inference Providers

Face off

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