StepFun Step 5 Preview 登顶 OpenRouter 趋势榜，开源权重 10 月 15 日放出
Step 5 Preview from @StepFun_ai hit #1 on OpenRouter Trending, a day after launch. It's available i...
StepFun 的 Step 5 Preview 发一天就冲上 OpenRouter 第一，600B 参数 MoE 加 1M 上下文，编码和前端生成都能打，10 月 15 日开源，可以换到自己现有工作流里试试。
StepFun 的 Step 5 Preview 发布一天后登上 OpenRouter Trending 第一。模型是 600B 总参数、每 token 激活 27B 的稀疏 MoE，上下文窗口 1M tokens，输出也支持最多 1M tokens。定位是工程编码场景，能修陌生代码库的 bug、跨文件实现功能、做重构，还会自查并在任务完成后停止。前端方面可以输入截图、mockup 或 PRD 生成可运行的网页，甚至从素材做出浏览器小游戏。开源权重定于 10 月 15 日发布，目前已接入 Kilo Code、Cline、Hermes Agent 和 OpenCode。
Step 5 Preview from @StepFun_ai hit #1 on OpenRouter Trending, a day after launch. It's available i...
Step 5 Preview from @StepFun_ai hit #1 on OpenRouter Trending, a day after launch. It's available in Kilo Code, Cline, Hermes Agent, and OpenCode. Keep your workflow and just switch models. I've tested the model. It’s a great model and has some nice properties. I've been using it as a coding agent since early access. It checks its own work and stops when the task is done. I would use it for long agent runs that I don't watch closely. StepFun built it for real engineering work. That covers fixing bugs in unfamiliar codebases, implementing features across files, and refactoring, with changes that run and pass checks. Frontend is the other big focus. You can give it a screenshot, a mockup, or a PRD, and it can return a working web page. It can also build a playable browser game from a set of assets. Beyond code, it reads annual reports and operating data and turns them into financial reports, editable spreadsheets, and slide decks. The context window is 1M tokens, with up to 1M output tokens. That is enough for large codebases and long multi-step tasks. Under the hood, Step 5 Preview is a sparse MoE with 600B total parameters and 27B active per token. Open weights are coming on Oct 15. Very much looking forward to its release. 💬 5 🔄 6 ❤️ 12 👀 1867 📊 8 ⚡
