vLLM Adds Hybrid HiSparse, Quadrupling Long-Context Concurrency

vLLM's Hybrid HiSparse, built with RedHat AI and Prime Intellect, uses sparse top-K attention to keep decoding even when KV cache spills over GPU, boosting 1M-context concurrency from 5 to 25 on 8x H200.

2026-09-09 ~ 2026-09-09 · 2 related posts

• vLLM's Hybrid HiSparse keeps decoding past HBM limits: 19-25 vs 5-6 concurrent 1M-context requests — vllm_project · 2026-09-09
• HiSparse hybrid sparse attention lands in vLLM: 8x H200 concurrency jumps from 5 to 25 at 1M context — eliebakouch · 2026-09-09