💰 Anthropic Claude 3.5 • OpenAI GPT-4o • DeepSeek-V3 • 90% Cost Reduction
Prompt Caching & Token ROI Calculator
Model your token economics across multi-turn agent dialogues. Calculate exact break-even turns and monthly billing reductions from prompt caching.
Caching Parameters
20,000 tokens
8 turns
Monthly Cost Reduction
78.5%
Net bill reduction
Total Dollars Saved
$18,840
Saved every 30 days
Break-Even Point
Turn 2
Write cost recovered
Monthly API Bill: Standard vs Cached
Standard Repeated Token Processing $24,000 / mo
With Ephemeral Prompt Caching $5,160 / mo
💡 Architectural Best Practice for Maximum Cache Hits:
Position all static content (system instructions, OpenAPI schemas, large documentation context) at the very top of your prompt before dynamic user messages. Claude and OpenAI cache from the prefix down; even a single whitespace modification in the prefix invalidates downstream cache blocks.