Prompt Caching & Batch ROI CalculatorsOpenAI
OpenAI: GPT-5.1-Codex Prompt Caching Calculator
Base Input Rate$1.25/M
Cache Hit Read$0.130/M(-89.6%)
Cache Write SurchargeFree (Automatic)
Output Rate$10/M
Simulation Parameters
Monthly Requests100,000
Input Tokens / Req8,000
Prompt Cache Hit Rate75%
Output Tokens800
Gross Uncached Cost$1,800.00
Net Bill$1,128.00
Cache Savings$672.00 (-37%)