Unverified60% confidenceFactExact time
DeepSeek V4.1 Flash reduces per-token storage from 3,500 bytes in the previous generation to approximately 890 bytes through KV cache inter-layer alternation and reuse optimization.
2
Sources
60%
Confidence
Long-term
Relevance
9/18/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedV4.1 Flash uses CSA2 (Compressed Sparse Attention 2) technology combined with FP4 format for caching data, compressing the global KV Cache footprint to only 890 bytes per token.79% similarUnverifiedTesting shows that DeepSeek V4.1 Flash 1017 reduced its thinking token count by about one-third, producing more concise output.77% similarUnverifiedDeepSeek 4.1 Flash consumes a large number of tokens, and the cost advantage brought by its small KV cache is partially offset by the high token consumption.76% similarUnverifiedIn Unsloth, keeping the Engram table of DeepSeek-V4.1-Flash-1017 on the SSD, the model takes about 125 GB of memory to run under 1-bit quantization and about 300 GB under 4-bit quantization.74% similarUnverifiedV4.1 Flash has approximately 196 billion memory-related parameters, which are significantly larger than the model's other components and could theoretically be offloaded to CPU memory or SSD.74% similar
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