Z
GLM 4.5 AirOPEN
GLM-4.5-Air is the lightweight variant of our latest flagship model family, also purpose-built for agent-centric applications.
Prices update automatically — checked daily against provider list prices.
- $0.31 per 1M tokens, assuming 3 input for 1 output the convention used by Artificial Analysis
- cheaper than 51% of the 200 open-weight models tracked here
- 4 of 18 Z.AI models tracked here, from cheapest
Benchmarks & performance
Independent benchmark scores for GLM 4.5 Air, measured by Artificial Analysis. Higher is better.
About this model
GLM 4.5 Air is an open-weight AI model by Z.AI. You can download and self-host it for free; the prices below are hosted-API list prices, tracked daily, for when you prefer convenience over self-hosting.
Frequently asked questions
What is GLM 4.5 Air?
GLM 4.5 Air is an AI language model from Z.AI. It is open-weight: you can download it and run it on your own hardware, for free.
Is GLM 4.5 Air free?
The weights are free and open — you can self-host GLM 4.5 Air and pay nothing per token. If you prefer a hosted API, list prices are $0.13 per million input tokens and $0.85 per million output tokens.
What is GLM 4.5 Air good at?
Independent benchmarks from Artificial Analysis give it GPQA 73.3%, MMLU-Pro 81.5%, Humanity's Last Exam 7%, Long Context Reasoning 46.7%, LiveCodeBench 68.4%, MATH-500 96.5%, AIME 67.3%, AIME 2025 80.7%, IFBench 37.6%, τ²-Bench 46.5%, Terminal-Bench Hard 20.5%. It is particularly used for mathematical reasoning.
Can I self-host GLM 4.5 Air?
Yes. GLM 4.5 Air has open weights, so you can download it and run it on your own GPU or server with tools like Ollama, vLLM or llama.cpp — with no per-token cost.