English(EN) StepFun Releases Open Weights for Step 5 Preview, Publishes Technical Blog on Its Architecture

StepFun 发布 6000 亿参数 Step 5 Preview 模型的开放权重

作者 PulseAugur 编辑部 · [3 个来源] · 2026-10-15 09:42

中国人工智能实验室 StepFun 发布了其 Step 5 Preview 模型的开放权重。该模型是一个稀疏专家混合系统，拥有 6000 亿参数，并支持高达 100 万个 token 的上下文窗口。此次发布包括技术博客和开发者工具，并且该模型在 OpenRouter 使用排行榜上名列前茅。 AI

影响通过提供对大规模、高上下文窗口模型的开放访问，促进了更广泛的研究和开发。

排序理由前沿实验室模型发布，包含开放权重和系统卡。[lever_c_降级自 frontier_release: ic=2 ai=1.0]

AI 生成摘要 · Google Gemini · 来自 3 个来源。我们如何撰写摘要 →

本文如何被排名

Signal score: 100 / 100; Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket: Significant; 前沿实验室模型发布，包含开放权重和系统卡。[lever_c_降级自 frontier_release: ic=2 ai=1.0]
Source corroboration: 3 independent sources; Multiple independent publishers reporting the same story raises confidence that it's real and newsworthy.
Topics: model release, infra; Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance: High; Clearly on-topic for AI-industry coverage.
Story freshness: Breaking (< 6h); Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.
Coverage growth since scoring: +1 source(s) since last score; New sources have picked up this story since our last re-score. Score will update on the next scoring pass.

完整方法见我们的编辑标准。

Pandaily TIER_1 English(EN) · [email protected] (Pandaily) · 2026-10-15 09:42

StepFun 发布 Step 5 预览版开放权重，并发布关于其架构的技术博客

Open weights for StepFun's Step 5 Preview are live: 600B total, 27B active, 1M context. A new technical blog explains its 92-layer design, Sparse GQA and long-horizon agent training.
Mastodon — mastodon.social TIER_1 English(EN) · [email protected] · 2026-10-15 10:34

中国AI实验室StepFun发布了其Step 5 Preview模型的开放权重，这是一个拥有6000亿参数的稀疏专家混合系统，支持100万

Chinese AI lab StepFun has released open weights for its Step 5 Preview model, a 600 billion parameter sparse mixture-of-experts system with support for 1 million token context. The model ranks second globally on OpenRouter usage charts. https:// pandaily.com/stepfun-step-5-pr ev…

链接 pandaily.com/stepfun-step-5-preview-open-…
Mastodon — mastodon.social TIER_1 English(EN) · sipirtu · 2026-10-15 10:28

StepFun 发布了其 Step 5 Preview 模型的开放权重，并附带技术博客和支持性开发者工具。该稀疏专家混合模型具有

StepFun released open weights for its Step 5 Preview model, along with a technical blog and supporting developer tools. The sparse mixture-of-experts model has 600B total parameters and supports a million-token context window. Source: Pandaily https:// pandaily.com/stepfun-step-5…

链接 pandaily.com/stepfun-step-5-preview-open-…