1.25x cache writes start billing on 21 August 2026: OpenAI's new dashboard, Azure's missing rate
OpenAI released a Prompt Caching dashboard on 20 August 2026 that reports cache reads per write. On GPT-5.6 that ratio decides whether caching cuts your input bill by 78 percent or raises it by 25 percent, and Azure
Manu Shukla 