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17 SEP 2026 · Paper

DeepSeek-V4.1-Flash: Pushing the Limits of KV Cache Compression

This paper introduces DeepSeek-V4.1-Flash, a more efficient model that reduces the computational cost of long-horizon agents by optimizing its prefill process and cache compression. Practitioners can benefit from this model's improved performance and reduced storage needs for agentic workloads.

multimodal Mixture-of-Experts (MoE)Causal Encoder-Decoder (CED)Compressed Sparse Attention 2 (CSA2)FP4 cachingpersistent KV cacheagentic workloads