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V4.1 Flash
DeepSeekDropped Sep 10, 202617 builds15 makers2 prompts
552B MoE with native vision, 1M context, 8B/16B active params and 1/8 KV cache for cheap high-throughput agents.
Live drop
DeepSeekDropped Sep 10, 202617 builds15 makers2 prompts
552B MoE with native vision, 1M context, 8B/16B active params and 1/8 KV cache for cheap high-throughput agents.
About this release
DeepSeek-V4.1-Flash is the smallest model in DeepSeek's new Causal Encoder-Decoder architecture family. It is a 552B-parameter multimodal MoE supporting text and image inputs with up to 1M-token context. It activates only 8B parameters during prefill and 16B during decode, achieves strong coding and agentic performance, and ships with MIT-licensed weights plus low-cost API access. It replaces prior V4 Flash variants and routes V4-Pro traffic.
Read the official DeepSeek launch pageWorth opening first
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