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A 100K-token prompt is a denial-of-service attack you paid for

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

A coding agent takes 11 seconds to rename a variable. The model is fine. The GPU is fine. The p99 is 11 seconds because one user pasted a 100K-token repository into the same pool, and everyone else's decode step is stuck behind its prefill. That's the part of LLM serving that never shows up in the…

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  1. 2026-10-20 17:43 · DEV Community — AI
    A 100K-token prompt is a denial-of-service attack you paid for

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