Verified75% confidenceFactExact time
Compared to the previous-generation V4 Flash, V4.1 Flash reduces the demand for high-bandwidth memory (HBM) to one-quarter and the demand for SSD persistent storage to one-eighth.
5
Sources
75%
Confidence
Medium-term (~90 days)
Relevance
9/11/2026
First Seen
Valid until: 12/10/2026
Sources
Related Entities
Related Claims
UnverifiedAs the context length increases, the rate of memory usage growth for V4.1 Flash becomes increasingly gradual, allowing it to support longer input windows with fewer resources.80% 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% similarUnverifiedFlashAttention reduces the number of reads and writes to HBM by retaining intermediate results in SRAM as much as possible, thereby breaking through the memory bandwidth bottleneck to achieve speedup.72% similarUnverifiedDeepSeek 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.70% similarUnverifiedV4.1 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.68% similar
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