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

Usage period

Daily usage is converted using a 30-day month.

Requests / day

Avg input tokens

Avg output tokens

Cache hit rate0%

Channels without a published cache price use the regular input price.

Batch request share0%

Assumes the common 50% Batch discount; confirm channel eligibility before use.

30K

requests/mo

30M

input/mo

15M

output/mo

2. Models and region

Step 3.5 Flash1/4

Monthly cost comparison

Paid channels are sorted by USD-normalised monthly cost.

Model	Channel	Input price	Output price	Cache	Est. monthly
Step 3.5 Flash	OpenRouterGlobal	$0.10/1M	$0.30/1M	$0.02	$7.50Lowest paidUSD normalised
Step 3.5 Flash	阶跃星辰 (StepFun)China	¥0.70/1M	¥2.10/1M	¥0.14	$7.61¥52.50 native