Glossary
What is cache read?
Cache read counts tokens served from a prompt cache instead of processed as new input. Coding agents hit this on later turns that repeat the same prefix. Cache write is the separate charge for storing that prefix.
Create account Token cost calculator
Definition
Cache read counts tokens served from a prompt cache instead of processed as new input. Coding agents hit this on later turns that repeat the same prefix. Cache write is the separate charge for storing that prefix.
Where to use it
Next page: Token cost calculator.
Details
- What is cache read?
- Cache read counts tokens served from a prompt cache instead of processed as new input. Coding agents hit this on later turns that repeat the same prefix. Cache write is the separate charge for storing that prefix.
Related
- Token cost calculator — Enter cache read and cache write next to input and output.
- Glossary — Short definitions that link to setup, pricing, and usage pages.
- GPT-5.6 Sol — A concrete model page that uses these terms.