Prompt Caching & Batch ROI CalculatorsOpenAI
OpenAI: GPT-5.1-Codex-Mini Prompt Caching Calculator
Base Input Rate$0.25/M
Cache Hit Read$0.030/M(-88%)
Cache Write SurchargeFree (Automatic)
Output Rate$2/M
Simulation Parameters
Monthly Requests100,000
Input Tokens / Req8,000
Prompt Cache Hit Rate75%
Output Tokens800
Gross Uncached Cost$360.00
Net Bill$228.00
Cache Savings$132.00 (-37%)