GLM 4.5 vs GPT Audio Mini: cost comparison
Prices updated 2026-10-27 · computed from live provider data
Short answer: GLM 4.5 is cheaper on a
3:1 input/output blend — $1.00 per million tokens versus
$1.05, a 5% difference.
GLM 4.5 offers the larger context window at 131,072 tokens, against 128,000 for GPT Audio Mini.
Head to head
| GLM 4.5 | GPT Audio Mini | |
|---|---|---|
| Input, per 1M tokens | $0.600 | $0.600 |
| Output, per 1M tokens | $2.20 | $2.40 |
| Blended 3:1, per 1M | $1.00 | $1.05 |
| Context window | 131,072 | 128,000 |
| Vendor | z-ai | gpt |
Monthly cost at real volumes
| Workload (input / output) | GLM 4.5 | GPT Audio Mini |
|---|---|---|
| 1M in / 250K out | $1.15 | $1.20 |
| 10M in / 2.5M out | $11.50 | $12.00 |
| 100M in / 25M out | $115 | $120 |
Which should you pick?
Pick GLM 4.5 when you need the longer context window (131,072 vs 128,000 tokens). Pick GLM 4.5 when price per token dominates your workload — high-volume classification, extraction, or batch summarisation.