DeepSeek V4.1 Returns to Encoder-Decoder Architecture With Open Innovations

Deep dive into DeepSeek V4.1's paper shows a return to encoder-decoder design inspired by 2024's YoCo paper, cross-layer reuse via CSA2, and notably KV cache reuse across checkpoints—all open-sourced, with observers crediting DeepSeek for architecture-level innovation lifting the whole research community.

2026-09-10 ~ 2026-09-10 · 4 related posts

• DeepSeek returns to encoder-decoder with new open architecture changes — evijit · 2026-09-10
• DeepSeek's V4.1 Flash reworks the Transformer again: asymmetric encoder-decoder and CSA2 — evijit · 2026-09-10
• DeepSeek cites 2024 YoCo paper as inspiration behind its CED transformer blocks — jm_alexia · 2026-09-10
• DeepSeek's V4.1 paper reveals KV cache reuse across checkpoints — 'a very strange model factory' — teortaxesTex · 2026-09-10