Z.ai: GLM 4.5 Air
Analysis Summary
Z.ai's GLM 4.5 Air is a text model with a 131,072-token context window, tool use, and function calling. Its measured profile includes an intelligence index of 16.7, a math index of 80.7, and a live coding measure of 0.684. The agentic measure is more moderate at 0.465, so the evidence is more encouraging for technical tasks than for highly autonomous workflows.
At $0.13 per million input tokens and $0.85 per million output tokens, it is a cost-conscious option for structured technical work, tool-assisted tasks, and internal content operations. Its instruction-following measure is modest, which calls for review when tone, precise formatting, or client-ready language matters. The provided modality is text-only.
Consider it for budget-sensitive workloads with clear acceptance checks. For complex agentic tasks or high-stakes editorial output, test carefully and retain human oversight.
Assessed September 23, 2026
Editorial notes
GLM 4.5 Air combines low listed prices and a 131K context window with tool support; benchmark results show stronger math and coding measures than its overall reasoning profile.
The DFO score ranks models on the Artificial Analysis Intelligence Index and is refreshed as new models launch. The write-up and verdict are our own. Feedback?
DFO Verdict
GLM 4.5 Air combines low listed prices and a 131K context window with tool support; benchmark results show stronger math and coding measures than its overall reasoning profile.
Benchmarks
Artificial Analysis data refreshed Oct 24, 2026. Arena ratings from the Oct 20, 2026 text leaderboard, with style control. Bars: magenta = reasoning, ink = coding and agents, cyan = instructions and long context.
Artificial Analysis has not published coding or agentic results for Z.ai: GLM 4.5 Air yet. Until it does, the model sits below tested models on the Coding and AI Agents lists.
How Z.ai: GLM 4.5 Air compares
Z.ai: GLM 4.5 Air ranks #216 of 443 AI models we track for overall intelligence. Its 131K-token context window is larger than 50% of the models we list. At $0.13 per million input tokens it is cheaper than 59% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.13 | $0.000130 |
| Output | $0.85 | $0.000850 |
What would Z.ai: GLM 4.5 Air cost your business?
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A website chatbot handling around 100 customer conversations a day, a few short messages each.
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Talk to our teamAbout Z.ai: 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..
Frequently asked questions about Z.ai: GLM 4.5 Air
How much does Z.ai: GLM 4.5 Air cost?
Z.ai: GLM 4.5 Air costs $0.13 per million input tokens and $0.85 per million output tokens.
What is the context window of Z.ai: GLM 4.5 Air?
Z.ai: GLM 4.5 Air has a context window of 131,072 tokens (131K).
What can Z.ai: GLM 4.5 Air do?
Z.ai: GLM 4.5 Air supports tool use and function calling.
Who created Z.ai: GLM 4.5 Air?
Z.ai: GLM 4.5 Air is developed by Z.ai and was released on July 25, 2025.