How Context Caching Saves 80% on OpenAI Bills

OpenAI and Anthropic prompt caching cuts long-context API costs 50–90%. See the cached-input price table across GPT-4o, Claude 3.5, and Gemini 2.5.

Worked example

OpenAI and Anthropic prompt caching cuts long-context API costs 50–90%. See the cached-input price table across GPT-4o, Claude 3.5, and Gemini 2.5.