Chinese content阶跃星辰开源 Step-5-Preview：600B 参数、100 万上下文
阶跃星辰把 Step-5-Preview 开源了，600B 参数只用激活 27B，输入输出都能吃 100 万上下文，长文档场景可以试试。
#Step-5-Preview
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Stories, products and papers tagged "Step-5-Preview", newest first.
Oct 15
Sep 25
Step-5-Preview Tested: Stable Outputs and Strong Agent Loop
Stability across repeated agent runs is the standout trait here, which matters for anyone running long agent loops where flaky outputs compound. The model's rule-exploiting behaviour in the rider test suggests it is well suited to optimisation-heavy tasks under explicit constraints. Developers building agentic coding workflows should compare it against current SOTA models, while front-end and 3D work still call for alternatives.
Sep 24
Step-5-Preview Tested on 3D Games, Finance and Web Design
The debugging loop matters more than the demo outputs: the model identifies failures, patches code and re-tests without prompt engineering, which is the practical bar for agentic coding use. Developers evaluating Chinese frontier models can weigh Step-5-Preview against similarly priced alternatives on the cost-intelligence curve. Financial professionals should note its reportedly strong domain performance in finance workflows.