DeepSeek V3.1 Released: Extended Context, Enhanced Reasoning, and the New Stage of Open-Source AI Competition A longer context window, stronger reasoning capabilities, and better cost-effectiveness—DeepSeek V3.1 is redefining the competitiveness of open-source large language models. On August 19, Chinese AI company DeepSeek officially released DeepSeek V3.1, a new version of its AI model. According to official announcements and feedback from the tech community, this is an incremental upgrade based on the previous V3 model, primarily improving context length and comprehensive reasoning capabilities, while also further enhancing performance in specialized tasks such as mathematics and programming. Although not a revolutionary leap, …