StepFun opens Step 5 Preview weights
What happened
At 11:02 on October 15, 2026, the AI HOT model section reported that StepFun has opened the Step 5 Preview model weights and published a technical blog. The release covers BF16 and FP8 versions, now on Hugging Face and ModelScope. As of this report, the progress is the weight release, the two versions on those platforms and the blog post; no other follow-up plans were disclosed.
Written by AI from the coverage · updated 3 hours ago
Coverage
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- AI HOT · Models阶跃星辰开放 Step 5 Preview 权重并发布技术博客
阶跃星辰正式开放 Step 5 Preview 模型权重，并发布技术博客。权重提供 BF16 与 FP8 版本，已上线 Hugging Face 和 ModelScope。
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