Why DeepSeek V4.1 Flash Is So Cheap: The KV Cache Secret! How It Solved the AI Memory Wall!
DeepSeek V4.1 Flash delivers unprecedented price performance. By aggressively compressing its short-term KV cache memory down to 890 bytes per token and cutting its long-term cache to one-eighth of its previous size, it breaks the hardware memory wall to deliver ultra-low-cost enterprise AI inference.