Event ·Multi-source

阶跃发布旗舰模型 Step 5 Preview，跻身全球开源模型前三

阶跃宣布推出旗舰模型Step 5 Preview，采用稀疏MoE架构，总参数量600B，激活参数仅27B。该模型在AA榜单中得分44分，位居全球开源模型前三。其单任务成本仅为Anthropic Claude Opus 5的1/8。模型建立了StepCodeBench，覆盖553个代码仓库和9类任务。在测试中，它能自主阅读ESP32文档，将开发板改造成支持蓝牙按键与语音输入的Vibe Coding键盘，并持续调试代码超过3小时。在复杂任务基准测试中，其综合能力仅次于GPT-6 Astra或Claude Opus 5。

Current read

阶跃这个新模型Step 5 Preview挺厉害的，能处理真实世界的编程任务，成本还低，和Claude Opus 5比起来单任务成本只有1/8。

11 sources78° AI heatLast updated 2026/9/20 03:19:25

Evidence

11 sources

Primary sourceIT之家

2026/9/20 03:19:25View source

Related source 1Blognone

2026/9/22 01:30:57View source

Related source 2theverge

2026/9/18 15:30:16View source

Related source 3Decoder

2026/9/18 17:20:30View source

Related source 4Gary Marcus

2026/9/20 00:30:53View source

Related source 5爱范儿

2026/9/20 04:00:16View source

Related source 6AI Will

2026/9/18 03:58:36View source

Related source 7宝玉

2026/9/18 04:59:54View source

Related source 8techcrunch

2026/9/18 14:00:14View source

Related source 9Simon Willison

2026/9/18 19:14:07View source

Related source 10Rappler: Technology

2026/9/19 04:45:00View source

Conflict check

Dedup data only shows that these sources discuss the same event, not that they agree. There is no structured supporting or refuting evidence yet, so no conflict is inferred automatically.

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