OpenAI Developers (@OpenAIDevs) announced prompt-caching improvements for the GPT-6 API: higher default cache-hit rates so more input tokens get cached-input discounts of up to 90%, helping agents run faster and cheaper. OpenAI docs also point developers to the Prompt Caching Dashboard and miss Diagnostics.

Key Takeaways

  • ✓GPT-6 API prompt caching now hits more often by default for agent workloads.
  • ✓Cached input tokens discounted up to about 90%.
  • ✓Dashboard monitors hit rates; Diagnostics help fix cache misses.
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