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I paused Claude Code for 0 to 65 minutes to see when the prompt cache expires

This story is from 2026-10-20. It is preserved in the archive; the latest stories are on the live feed.

You work in Claude Code all morning, go to lunch, come back and send one more message. The first reply is slow and your usage jumps. The usual suspect is the prompt cache: once it expires, the next message has to re-process the whole conversation. But how long does the cache actually last? Guides s…

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  1. 2026-10-20 10:50 · DEV Community — AI
    I paused Claude Code for 0 to 65 minutes to see when the prompt cache expires

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