Posts tagged gpt-5.6

1 post about gpt-5.6.

• GPT-5.6 Cost Guide: Prompt Caching 90% Off, Reasoning Effort

  July 10, 2026 · gpt-5.6 · prompt-cache · reasoning · cost

  GPT-5.6's two cost levers, measured: explicit breakpoints bill cached input at 10% of the rate, and not sending reasoning_effort bills 1.5x as much as none.