LLM Price Calc is a pricing calculator for developers budgeting Claude API usage. Its headline tool estimates the cost of Claude Haiku 5.5 requests across Anthropic’s two prompt-length tiers: prompts up to 100,000 tokens are priced at $0.10 per million input tokens and $0.50 per million output tokens, while longer prompts use $0.50 input and $2.50 output. The calculator also models prompt-cache read and write rates, a batch-processing discount for asynchronous workloads, and a US-only inference multiplier, turning token counts and monthly request volume into a monthly spend estimate and a comparison against Haiku 4.5. A published rate card and a plain calculation method keep every figure inspectable, and the site links to companion calculators for longer prompt caching and for Gemini pricing changes. It is built for developers and teams who want to forecast API bills before they scale a workload, with no signup and no data sent anywhere for the estimate itself.