StepFun· @StepFun_ai · X·· 2 小时前精选AI 评分77
AI 导读
阶跃星辰（StepFun）宣布 Step 5 Preview 开放权重，BF16 和 FP8 权重已上线 Hugging Face 和 ModelScope，并附技术博客。
推荐理由
官方公告直接给出权重规格和下载入口，需要开源 MoE 权重的读者可据此评估是否纳入自己的工作流。
正文 · 原文
Step 5 Preview is now open weights.
BF16 and FP8 weights are live on Hugging Face and ModelScope, together with our technical blog.
- Sparse MoE: 600B total, 27B active per token
- 1M-token context window
- Native text and vision input
- Built for long-horizon agentic work: coding, software engineering, professional knowledge work and finance
Frontier intelligence, open weights. Build what's next.
Hugging Face: https://huggingface.co/stepfun-ai/Step-5-Preview
ModelScope: https://modelscope.ai/models/stepfun-ai/Step-5-Preview
GitHub: https://github.com/stepfun-ai/Step-5-Preview
来源：StepFun · x.com