DeepSeek
DeepSeek's official news post dated September 9, 2026, introducing DeepSeek-V4.1-Flash, explicitly addresses the disposition of DeepSeek-V4-Flash-Vision-Exp by stating that V4-Flash and V4-Flash-Vision-Exp are retired and that, for compatibility, deepseek-v4-flash and deepseek-v4-flash-vision-exp temporarily route to V Beyond the retirement notice, the page focuses on V4.1-Flash capabilities (552B-parameter MoE with 8B/16B active parameters, new Causal Encoder-Decoder architecture, reduced KV cache footprint, and API pricing changes effective September 10, 2026), and outlines that V4-Pro requests will also route to V4.1-Flash startin