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StepFun· @StepFun_ai · X·· 2 小时前精选AI 评分67
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阶跃星辰转发 FeatherlessAI 的消息,Step 5 Preview 已上线该平台,以 FP8 精度提供服务。该开放权重模型为 600B 稀疏 MoE 架构、每 token 激活 27B,面向长程智能体工作,在软件工程和专业知识工作(尤其金融)上有前沿级表现,按 Artificial Analysis 数据其每任务成本约为 Claude Opus 5.5 的 1/6,智能水平与 Kimi K3 相当。

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引用内容给出 Step 5 Preview 的参数规模、成本对比和部署入口,读者可据此评估其性价比与获取方式。

正文 · 原文

Great to see Step 5 Preview live on @FeatherlessAI!

Frontier-level intelligence, competitive cost efficiency, and easier access for developers.

引用Featherless AI@FeatherlessAI
Step 5 Preview is here. @StepFun_ai's new open-weights model sets a new Pareto frontier, matching Kimi K3 on the @ArtificialAnlys Intelligence Index! It’s built for long-horizon agent work, with frontier-level results on software engineering and professional knowledge work, especially finance. - 600B sparse MoE, 27B active per token - ~1/6 the cost per task of Claude Opus 5.5, per Artificial Analysis Now on Featherless, served at FP8. https://featherless.ai/model-pages/step-5-preview
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来源:StepFun · x.com