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Prompt caching ghi mà không đọc: vì sao bill tăng 25%

This story is from 2026-09-12. It is preserved in the archive; the latest stories are on the live feed.

Originally published on NextFuture Bạn bật prompt caching cho một agent loop để cắt chi phí input, vì trong một tool loop thì input token là gần như toàn bộ hoá đơn. Một thời gian sau bill tăng chứ không giảm, trong khi mọi request đều trả 200, latency không đổi và log không báo gì. Bài này đi qua…

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  1. 2026-09-12 23:00 · DEV Community — AI
    Prompt caching ghi mà không đọc: vì sao bill tăng 25%

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