StepFun details Step 5 Preview and Step Code at ACC 2026
At ACC 2026, StepFun GTM and developer relations lead Gong Guan detailed the company’s Step 5 Preview flagship foundation model and Step Code Agent Harness. Step 5 Preview uses a 600B-parameter MoE architecture with about 27B parameters activated per inference, native multimodal input, long-context processing, and tool use, while Step Code manages goals, context, execution state, and result acceptance for long-running tasks. Gong Guan said Step Code was then in its fourth version, with an average iteration cycle of three working days.
StepFun is positioning the model and Agent Harness together as a stack for complex, long-running development and professional work, although the report does not provide independent performance evaluations.
AI 能力增强，让创造变得越来越容易，也让创造本身获得了新的意义。
今年 9 月，第三方研究机构 Village 对网站主机进行调查，发现有超过 8.7 万个网站使用 Lovable、Replit 等五家 AI 应用构建平台搭建。 Lovable 在 5 月公布的数据则显示，平台累计创建的项目达到约 5000 万个，每周新增约 100 万个。
这些数字都直观展示了 AI 时代创造门槛的降低。而在最近的 ACC 2026 AI 创造者嘉年华上，阶跃星辰 GTM 和开发者关系负责人龚关以“创造”为主题，分享了她对这一变化的理解。
在龚关看来，每个人的经验、好奇心，以及对他人的关心，都可能成为创造的起点；AI 的能力演进，则让更多人有机会迈出第一步。
