OpenAI’s 12-hour prompt cache pays off from the third request
GPT-5.6 and later can keep a cached prefix for 12 hours at a 2.5x write price. Worked break-even numbers, and the traps in the docs.
Tag: Prompt caching
GPT-5.6 and later can keep a cached prefix for 12 hours at a 2.5x write price. Worked break-even numbers, and the traps in the docs.