StepFun open-sources Step 5 Preview, a new flagship model

AIStepFun open-sourced Step 5 Preview, its new flagship model, on October 15, 2026. The source says the model reaches frontier levels on AI programming, software engineering, professional knowledge work, and finance tasks.

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AI Era · AIERA · aiera.com.cnPublished Oct 15, 8:03 PM ET

Original title: 全球领先！千卡超节点算力巨无霸，成功点亮

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Open-source ecosystem China AI Model releases