AI API monthly cost calculator
Enter your real request pattern and compare every available channel for up to four models. Native prices stay in their published currency; ranking is normalised to USD.
1. Usage
Daily usage is converted using a 30-day month.
0%
Channels without a published cache price use the regular input price.
0%
Assumes the common 50% Batch discount; confirm channel eligibility before use.
30K
requests/mo
30M
input/mo
15M
output/mo
2. Models and region
GPT 5.1 Codex Max1/4
Monthly cost comparison
Paid channels are sorted by USD-normalised monthly cost.
| Model | Channel | Input price | Output price | Cache | Est. monthly |
|---|---|---|---|---|---|
| GPT 5.1 Codex Max | OpenRouterGlobal | $1.25/1M | $10.00/1M | $0.13 | $187.50Lowest paidUSD normalised |
| GPT 5.1 Codex Max | Azure OpenAIGlobal | $1.25/1M | $10.00/1M | $0.13 | $187.50USD normalised |