DeepSeek V4.1 Flash 1017 Tops Artificial Analysis Cyber Index for Open Models

DeepSeek's updated open-weights model V4.1 Flash 1017 scored 57% on the Artificial Analysis Cyber Index, the highest result among models with a public API and a 16-point improvement over its predecessor. The model ranks second overall behind OpenAI's restricted-access GPT-6 Sol, which scored 69%, and costs $0.42 per task, roughly 4x cheaper than GPT-6 Sol.