FlashMemory Cuts DeepSeek-V4's KV Cache to 13.5%: Lookahead Sparse Attention
What: The FlashMemory-DeepSeek-V4 paper introduces Lookahead Sparse Attention (LSA) โ decoding very long context without loading the whole KV cache, by training a small Neural Memory Indexer to predict which chunks of the cached past a token will actually use. Why: At long context the binding cost i
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