...It supports a context window of up to 1 million tokens, enabling developers to analyze extensive codebases, lengthy documents, and complex multi-step tasks. DeepSeek-V4.1-Flash introduces a Causal Encoder-Decoder architecture, Compressed Sparse Attention 2, and advanced KV cache compression to reduce memory requirements and computational costs, particularly for input-heavy AI applications. The model also features native image understanding, configurable reasoning effort from 1 to 100, and enhanced agentic capabilities for autonomous coding and tool calling.