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Reduce LLM latency with prefix-aware routing on Amazon SageMaker Inference

This story is from 2026-09-10. It is preserved in the archive; the latest stories are on the live feed.

Amazon SageMaker Inference now offers prefix-aware routing, a routing strategy that sends requests sharing the same prompt prefix to the same instance so the KV cache stays warm. In benchmarks on Llama 3.1 70B, it reduced P50 time-to-first-token by up to 77% and raised KV cache hit rates from about…

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  1. 2026-09-10 21:58 · AWS Machine Learning Blog
    Reduce LLM latency with prefix-aware routing on Amazon SageMaker Inference

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