Discussion on "Why My LLM Feature Cost More Than It Should: Field Notes on Prompt Caching, Cache Breakpoints, and the Timestamp That Killed Every Hit ae7c4d"

Ahmed Mahmoud · 2026-10-07T06:02:25.469Z

Headline: Prompt caching saves money only when the cached prefix is byte-identical across requests, and a single interpolated timestamp in a system prompt is enough to make every call a cache write in

Discussion on "Why My LLM Feature Cost More Than It Should: Field Notes on Prompt Caching, Cache Breakpoints, and the Timestamp That Killed Every Hit ae7c4d" | Hashnode

Search Hashnode

Why My LLM Feature Cost More Than It Should: Field Notes on Prompt Caching, Cache Breakpoints, and the Timestamp That Killed Every Hit ae7c4d

Responses