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LMSYS says SGLang matches DeepInfer on DeepSeek-V4.1-Flash prefill and decode throughput

AILMSYS Org says SGLang matches DeepInfer on both prefill and decode for DeepSeek-V4.1-Flash. It reports up to 1.04× prefill throughput on 4× GB300 and 4× B300, and up to 7.4% decode throughput on 64× GB300.
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DeepSeek raised the bar, and SGLang pushed it even further 🧡

https://lmsys.org/blog/2026-10-24-dsv41-deepinfer

Read our blog to learn more about the performance results, engineering optimizations, and how SGLang brings it all together in a production-ready serving stack!

SGLang@sgl_project
DeepInfer set the bar. SGLang pushed it higher! 🚀 SGLang now matches DeepInfer performance on BOTH prefill and decode: • Prefill: Up to 1.04× throughput on 4× GB300 and 4× B300 • Decode: Up to 7.4% throughput on 64× GB300 We also provide an end-to-end reproduction guide and a full serving stack to run it in production.
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LMSYS Org · x.comPublished · added here

Original title: DeepSeek raised the bar, and SGLang pushed it even further 🧡