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About this paper

Chenxi Li, Weili Xu, Tianyi Zhang, Jue Wang, Zhongzhu Zhou, Chenfeng Xu

The authors introduce FlashState, which captures matching attention and recurrent state at an agent request’s endpoint and selectively retains complete states under cache pressure. In a 48-session coding-agent replay with GLM-5.3-Flash, 1M-token context, and two NVIDIA B200 GPUs per engine, it achieved 4.66M prefill tokens per minute per GPU versus 1.48M for vLLM, about 3.14×, in that setup.

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