OpenAI Prompt Cache Diagnostics is generally available in the Responses API
GAVerifiedAdded Sep 22, 2026
For GPT-5.6 and later, developers can compare cache reuse against a previous response, see reasons for cache misses and follow guidance to improve cache hit rates.
Topics: LLMs, Developer tools
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| Sep 8 | OpenAI releases GPT Image 2.5 Sunburst and GPT Image 2.5 Flare Update | Update |
| Sep 8 | OpenAI GPT-Rosalind is GA for approved life sciences research GA | GA |
| Sep 10 | OpenAI project API keys support expiration dates Update | Update |
| Sep 10 | OpenAI Agents API enters public beta Beta | Beta |
| Sep 10 | OpenAI GPT-Live 1 is generally available for full-duplex voice GA | GA |
| Sep 10 | Introducing the Agents API Update | Update |
| Sep 10 | Build more natural voice experiences with GPT‑Live‑1 in the API Update | Update |
| Sep 3 | OpenAI releases GPT-6 Astra for complex end-to-end work Update | Update |
