GLM-4.5-Air pricing
GLM-4.5-Air, Small-tier from Z.ai, costs $0.20 per 1M input tokens and $1.10 per 1M output tokens.
Input$0.20per 1M tokens
Output$1.10per 1M tokens
Context window128Ktokens
TierSmallZ.ai
Price your own workload against GLM-4.5-Air in the calculator →
Specs and pricing
| Provider | Z.ai |
| Tier | Small |
| Context window | 128K tokens |
| Max output | — |
| Input price | $0.20 / 1M tokens |
| Output price | $1.10 / 1M tokens |
| Cache read | $0.03 / 1M tokens |
| Modalities | text |
Note. Cheapest non-free usable GLM text model, per 1M tokens.
What it costs at realistic volumes
Assuming a 4:1 input:output token ratio, a common shape for chat and RAG-style workloads:
| Volume (4:1 in:out ratio) | Input cost | Output cost | Total / month |
|---|---|---|---|
| 1,000,000 in / 250,000 out | $0.20 | $0.28 | $0.48 |
| 10,000,000 in / 2,500,000 out | $2.00 | $2.75 | $4.75 |
| 100,000,000 in / 25,000,000 out | $20.00 | $27.50 | $47.50 |
Cheaper alternatives
Same tier (Small), a different provider, and a lower blended cost at the 4:1 ratio used above:
| Model | Provider | $/1M in | $/1M out | At the 4:1 ratio |
|---|---|---|---|---|
| Meta-Llama-3.1-8B-Instruct-Turbo | DeepInfra | $0.02 | $0.04 | 93.7% cheaper blended |
| Solar Pro 4 | OpenRouter | $0.03 | $0.12 | 87.4% cheaper blended |
| GPT-OSS 20B | OpenRouter | $0.03 | $0.13 | 86.8% cheaper blended |
| schematron-v2-turbo | inference.net | $0.03 | $0.15 | 85.8% cheaper blended |
| Amazon Nova Micro | Amazon (Nova) | $0.035 | $0.14 | 85.3% cheaper blended |