On October 17, 2026, DeepSeek released DeepSeek-V4.1-Flash-1017, an updated checkpoint of its V4.1-Flash artificial intelligence model accessible via DeepSeek's website, mobile app, and API

From the articleDeepseek V4.1 Flash 1017 beats larger rivals in agentic tasks while once again massively cutting per-task costsAlso in DeepSeek Just Released V4.1-Flash-1017, Scores 77.0 on DeepSWE, Opens Search API