DeepSeek V4.1 Flash Shrinks KV Cache 437x, Sparking HBM Debate

DeepSeek V4.1 Flash compresses KV cache to 890 bytes per token, 437x smaller than V1, easing HBM capacity constraints for China's AI compute. Analysts now debate whether HBM remains a hard requirement.

2026-09-10 ~ 2026-09-12 · 2 related posts

• V4.1 Flash KV cache is 437x smaller than V1, easing China's memory bottleneck — ChrisGPT · 2026-09-10
• DeepSeek V4.1 Flash cuts global KV cache to 890 bytes/token, but HBM demand may rise with agent swarms — teortaxesTex · 2026-09-12