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About this paper
Chenxi Li, Weili Xu, Tianyi Zhang, Jue Wang, Zhongzhu Zhou, Chenfeng Xu
FlashStates improves prefix reuse for hybrid language models, which require both attention key-value tensors and a recurrent checkpoint at the same prefix endpoint. Arbitrary State Checkpointing captures that complete state at request endpoints, while a cost-aware policy jointly admits and evicts states. On GLM-5.3-Flash, it delivers 4.66 million prefill tokens per minute per GPU, 3.14× vLLM, in coding-agent trace replays on three hybrid models, not a universal serving guarantee.
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