What are StepFun’s Step 5 Preview’s release and open-weight plans, model architecture and multimodal context capabilities, intended long-horAI-generated editorial illustration; not a diagram of Step 5 Preview’s architecture.
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Create a landscape editorial hero image for this Studio Global article: What are StepFun’s Step 5 Preview’s release and open-weight plans, model architecture and multimodal context capabilities, intended long-hor. Article summary: Step 5 Preview is StepFun’s larger model for long-running agent work, rather than its speed-focused Flash models. It is available as a hosted preview; StepFun says it plans to release open weights on October 15, 2026, so. Topic tags: general, general web, user generated. Style: premium digital editorial illustration, source-backed research mood, clean composition, high detail, modern web publication hero. Use reference image context only for broad subject, composition, and topical grounding; do not copy the exact image. Avoid: logos, brand marks, copyrighted characters, real person likenesses, fake screenshots, UI text, readable text, watermarks, charts with fa
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如果一项工作需要阅读大量材料,并在多个步骤中持续调用工具,阶跃星辰推荐使用 Step 5 Preview:其定位包括软件工程、专业知识工作和多步骤智能体任务。它已列入阶跃星辰的 API 可选模型,支持文本、图像和视频输入,上下文窗口为 100 万词元(token)。13