KV Cache Economics50% to 90% Savings
Prompt Caching Cost & ROI Calculator
Determine exact cost savings and write amortizations for Anthropic, OpenAI, and DeepSeek prompt caching. Simulate prefix sizes, cache hit ratios, and net monthly returns.
Prompt Caching Inputs
KV Cache ModelingCached Prefix Tokens (System, RAG, Tools)12,000 tokens
Minimum cache threshold: 1,024 tokens for most providers.Dynamic User Query Tokens800 tokens
Expected Generation Output Tokens600 tokens
Cache Hit Rate (%)80%
Monthly Request Volume250,000 reqs
Monthly Cash Savings
+$7,020.00
59.2% bill reductionAnnual Projected ROI
+$84,240.00
Net 12-month savingsEconomics Comparison: Uncached vs Cached
Standard Uncached Monthly Cost:$11,850.00
Optimized Prompt Caching Cost:$4,830.00
Cache Break-Even Threshold:1 hit per write
Provider Cache Discount:93% Off Prefix
Claude Sonnet 5 Prompt Caching Details
Read: $0.2/M • Write: $2.5/M