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...
Model details →Z.ai: GLM 4.5 Air vs Anthropic: Claude Opus Latest
Z.ai: GLM 4.5 Air and Anthropic: Claude Opus Latest are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
This model always redirects to the latest model in the Claude Opus family.
Model details →Side-by-side comparison
| Capability | Z.ai: GLM 4.5 Air | Anthropic: Claude Opus Latest | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 131K | 1M | 🏆 Anthropic: Claude Opus Latest |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.13 | $5.00 | 🏆 Z.ai: GLM 4.5 Air |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.85 | $25.00 | 🏆 Z.ai: GLM 4.5 Air |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 Anthropic: Claude Opus Latest |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Z.ai: GLM 4.5 Air better than Anthropic: Claude Opus Latest?
Z.ai: GLM 4.5 Air and Anthropic: Claude Opus Latest are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between Z.ai: GLM 4.5 Air and Anthropic: Claude Opus Latest?
Input: $0.13 vs $5.00 per 1M tokens. Output: $0.85 vs $25.00 per 1M tokens.
What context windows do Z.ai: GLM 4.5 Air and Anthropic: Claude Opus Latest support?
Z.ai: GLM 4.5 Air supports up to 131K tokens. Anthropic: Claude Opus Latest supports up to 1M tokens.
Do both Z.ai: GLM 4.5 Air and Anthropic: Claude Opus Latest support tool calling?
Z.ai: GLM 4.5 Air: yes. Anthropic: Claude Opus Latest: yes.
Compare Z.ai: GLM 4.5 Air with other models
vs Anthropic Claude Haiku Latestvs Anthropic Claude Sonnet Latestvs Anthropic: Claude Fable Latestvs Anthropic: Claude Opus Latest