DeepSeekLaunchAI ModelsSeptember 10, 2026

DeepSeek releases V4.1-Flash with novel YOCO decoder-decoder architecture

DeepSeek-V4.1-Flash ships with a 552B backbone, native image and text input, and up to a 1M-token context window. The YOCO architecture is a decoder-decoder design aimed at cutting GPU memory and prefill latency.

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