---
title: Prompt Caching on the Claude API
description: "Prompt caching makes repeated context on the Claude API much cheaper. How it works on apiToken.sale, when to use it, and how it stacks with your discount."
url: https://apitoken.sale/docs/learn/claude-api-prompt-caching
language: en
---

# Cutting costs with Claude prompt caching

If you send the same large context repeatedly — system prompts, files, tool definitions — caching turns those tokens from expensive to nearly free.

## How caching saves money

Cache writes and cache reads are metered separately, and cache reads cost a fraction of fresh input tokens. Stable, reused context is the ideal candidate.

## It stacks with your discount

Caching lowers the token count; your apiToken.sale discount lowers the price per token. Together they compound into a much smaller bill, and every cache line is visible in your usage breakdown.

## Frequently asked questions

### How much does prompt caching save?

Cache reads cost a fraction of fresh input tokens, so repeated large context becomes far cheaper.

### Does caching work with the discount?

Yes — caching reduces token count and the discount reduces price per token, so the savings multiply.

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