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AI IntelligenceSep 20, 2026AI Intelligence
Article

DeepSeek releases DeepSeek-V4.1-Flash MoE model with 1M context window

DeepSeek has released DeepSeek-V4.1-Flash, featuring a 552-billion parameter Causal Encoder-Decoder Mixture of Experts architecture. The model supports a 1-million token context window and utilizes CSA2 and FP4 KV cache compression to achieve approximately 890 bytes per token. It is available via API as deepseek-flash.

Frontier EditorialSource: Pandaily
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Source Brief

DeepSeek releases DeepSeek-V4.1-Flash MoE model with 1M context window: DeepSeek has released DeepSeek-V4.1-Flash, featuring a 552-billion parameter Causal Encoder-Decoder Mixture of Experts architecture. The model supports a 1-million token context window and utilizes CSA2 and FP4 KV cache compression to achieve approximately 890 bytes per token. It is available via API as deepseek-flash.

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