Simulate Prompt Caching Savings, Cache Write Premiums & Cache Read Discounts Across Claude, GPT-4o, DeepSeek & Gemini
Model multi-turn agent context caching, 5-minute TTL write/read economics, and break-even thresholds across Anthropic Claude 3.5/3.7 Sonnet, OpenAI GPT-4o, DeepSeek V3/R1, and Google Gemini 1.5/2.0 Pro.
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How to Use the Prompt Caching Cost Calculator
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STEP 01Select your LLM provider and model (Claude 3.5/3.7 Sonnet, OpenAI GPT-4o, DeepSeek V3/R1, or Gemini 1.5 Pro).
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STEP 02Select your expected cache hit rate (50%, 75%, or 90% based on request repetition within TTL).
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STEP 03Enter your monthly total input tokens (Millions), monthly output tokens (Millions), and percentage of tokens eligible for caching.
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STEP 04Review side-by-side total monthly costs without caching vs with caching, net dollar savings, percentage saved, and cross-model comparison.
Frequently Asked Questions (Prompt Caching Cost Calculator)
How does prompt caching pricing differ between Anthropic Claude and OpenAI GPT-4o?
Anthropic Claude applies an explicit 5-minute TTL cache: writing to the cache costs 25% extra ($3.75/M vs $3.00/M base), but reading from the cache gives a massive 90% discount ($0.30/M). OpenAI automatically caches repeated prompt prefixes longer than 1,024 tokens with no write surcharge and applies a flat 50% discount on cached input tokens ($1.25/M vs $2.50/M base).
What is the break-even threshold for Anthropic Claude prompt caching?
Because Anthropic charges a 25% premium on cache write ($3.75/M vs $3.00/M), you break even on the very second request using that cached prefix within 5 minutes ($3.75 write + $0.30 read = $4.05 for 2 calls vs $6.00 uncached, saving 32.5%). Every subsequent cache read delivers pure 90% savings.
Does DeepSeek support prompt caching?
Yes, DeepSeek natively supports prompt caching on their official API and through OpenRouter. DeepSeek cache hits cost an ultra-low $0.014 per 1M tokens (90% discount off the already low $0.14/M base rate), making context caching virtually free for heavy agentic workflows.