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What is disaggregated prefill and decode in LLM inference?

This story is from 2026-10-06. It is preserved in the archive; the latest stories are on the live feed.

What is disaggregated prefill and decode in LLM inference? Prefill is compute-bound, decode is memory-bound. Learn why colocating them hurts TTFT and ITL, and when disaggregated serving pays off. Every LLM request runs through two phases with effectively opposite hardware profiles. Understanding th…

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  1. 2026-10-06 18:03 · DEV Community — AI
    What is disaggregated prefill and decode in LLM inference?

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