Old Zhang's AI Learning

Oct 17, 2026 · Artificial Intelligence

DeepSeek-V4.1-Flash-1017: Flash Model Matches Flagships on Agent Benchmarks, Cuts KV Cache 4x

DeepSeek releases V4.1-Flash-1017, a flash-tier model that outperforms flagship competitors on key agent benchmarks like DeepSWE and Automation-Bench while reducing KV cache to 1/4 of its predecessor via CSA2 sparse attention and FP4 quantization, and adds native multimodal support, adjustable reasoning intensity, and a new Search & Fetch API for real-time web access.