Latest open artifacts (#25): DeepSeek V4.1 Flash 1017, American-made models, and new regulatory controls in the US & China

Newsletter · Watch/Read · (gathered 2026-10-21)

• The open model ecosystem is rapidly maturing but simultaneously entering a period of significant geopolitical and regulatory uncertainty, with both the US and China accelerating efforts to control AI systems.
• China’s MOFCOM proposed pre-approval for frontier AI models shared internationally, while the US DHS restricted DeepSeek from federal civilian procurement, reinforcing the need for a domestic open model ecosystem.
• DeepSeek’s public release of its highly efficient internal inference stack, DeepInfer, is a major “open-source AI artifact” expected to drive down model prices or increase margins across the ecosystem.
• Notable new open models include XiaomiMiMo’s V2.6-Pro-RL (top on Artificial Analysis), DeepSeek-V4.1-Flash-1017 (MIT license, strong performance/price), and Reflection’s Beam-1.0-501B-A23B (strongest open American model, highly token efficient).