Speed Up Your LLMs with Smarter Request Routing on SageMaker

Amazon SageMaker Inference just dropped prefix-aware routing, a clever trick that groups requests with matching prompt prefixes on the same instance to keep the KV cache hot. In real benchmarks with Llama 3.1 70B, this slashed first-token latency by up to 77% and boosted cache hit rates from 25% to over 80%—basically a free performance win for your inference workloads.