Interactive LLM Cost Calculator
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Launch LLM Cost Calculator1. Claude 3.5 Sonnet and Haiku Token Pricing
Claude 3.5 Sonnet is priced at $3.00 per million input tokens and $15.00 per million output tokens. The faster Claude 3.5 Haiku costs $0.80 per million input tokens and $4.00 per million output tokens. While Haiku is cheaper, Sonnet is often chosen due to its vastly superior code generation.
2. The Power of Claude's 90% Prompt Caching Discount
Anthropic provides highly advanced prompt caching. Writing a prompt to the cache costs a 25% premium (e.g. $3.75/MTok for Sonnet), but subsequent reads cost only $0.30 per million tokens—a 90% discount. For agents that carry long conversation histories or document context, this makes Claude extremely cost-competitive.
3. Estimating Monthly Operational Expenses
Without caching, 5,000 queries per day on Claude 3.5 Sonnet (assuming 3,000 input and 600 output tokens per query) costs approximately $2,700/month. By structuring system prompts to leverage caching, you can reduce this bill to under $600/month.
Frequently Asked Questions
Does Claude offer a free developer API?
Anthropic does not offer a free production API. However, developers receive a small amount of free credits ($5) upon signing up to test integration.
How long does a Claude prompt cache last?
Claude's prompt cache has a time-to-live (TTL) of 5 minutes. If no requests hit the cache within 5 minutes, it expires and must be re-written.