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DeepSeek-V4.1-Flash on vLLM: 5x Agentic Throughput Since Day 0

calendar_today October 7, 2026 person Inferact and the vLLM Team domain vllm

Within three weeks of release, vLLM made DeepSeek-V4.1-Flash 1.9x faster at low concurrency and lifted its throughput 5x on SemiAnalysis AgentX, with SWA bounded replay, CUDA graphs, DeepSeek’s new kernels, and vLLM kernel fusions.

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