Cost calculator
Prompt Cache Savings Calculator
Compare standard and cached GPT-5 input charges for a reused prompt prefix.
Estimated cost
$0.00 monthly
$0.00 annually
Methodology and assumptions
Compares the same GPT-5 prefix tokens billed as standard versus cached input for each modeled hit. Cache eligibility, writes, misses, eviction, storage, output, taxes, and discounts are excluded; savings are modeled, not guaranteed.
Pricing last verified:
Frequently Asked Questions
What does the Prompt Cache Savings Calculator calculate?
Compare standard and cached GPT-5 input charges for a reused prompt prefix.
How accurate is the Prompt Cache Savings Calculator?
It is a planning estimate based on the inputs, formula, assumptions, and sources shown on this page. Actual prices, invoices, taxes, discounts, and outcomes can differ.
Are calculator inputs saved or sent to analytics?
Inputs are processed in your browser. Calculator values are not included in analytics events.