← Chat

阶跃AIStepFun (Step Chat)

阶跃星辰StepFun

国产China-origin 开放权重联动Open-weights linkage 免费+登录Free + sign-in 已备案Filed 多产品线Multi product line partial lifecycle: active 核验Checked 2026-10-30

阶跃AI 是阶跃星辰的国产对话产品（chat.stepfun.com，页内品牌「阶跃AI」）：自研 Step 系列、开放权重线在 HF 同厂组织页联动，首批附近备案（2023-11-24），大陆直连可用。

Step Chat is StepFun's domestic chat product (chat.stepfun.com, branded "Jieyue AI" in-page): self-developed Step series, with the open-weights line linked via the same vendor's Hugging Face org page, filed close to the first batch (2023-11-24), direct from the mainland works.

适合与不适合When to use it, when not to

适合：国产对话+开放权重生态联动（权重可本地跑）、大陆直连。不适合：要脱离阶跃账号、要在对话产品里跑本地模型。

Fits: domestic chat linked with the open-weights ecosystem (weights can run locally), direct from the mainland. Not a fit: leaving the StepFun account, running local models inside the chat product.

中文生态China availability 国产 / 国内可直接用 / 备案状态 · 快照domestic / direct access / CAC filing · snapshot 2026-10-30

出品属地Origin: 国产domestic　上海阶跃星辰智能科技有限公司（中国）。Shanghai Jieyue Xingchen Intelligent Technology Co., Ltd. (China).
国内使用Direct access: 大陆可直连direct OK　chat.stepfun.com 与 www.stepfun.com 大陆直连实测 200（2026-10-30）。chat.stepfun.com and www.stepfun.com measured 200 direct from mainland (2026-10-30).
备案状态CAC filing: 已备案Filed：Shanghai-JieYue-20231106Shanghai-JieYue-20231106　·　备案时间filed 2023-11-24　·　「阶跃」备案号经网信办公示批次 PDF 镜像交叉核验（2024-04 批第 35 行：上海阶跃星辰智能科技有限公司，备案时间 2023-11-24）；另有「阶跃多模态」Shanghai-JieYueDuoMoTai-202505230047（2025-06-09 批）与端侧「阶跃终端AI」（2026-09 批，媒体报道口径）——对话产品对应哪个备案未单独核验。The JieYue filing number cross-verified via the CAC batch PDF mirror (2024-04 batch row 35: Shanghai Jieyue Xingchen Intelligent Technology Co., Ltd., filed 2023-11-24); separate filings exist for JieYue multimodal (Shanghai-JieYueDuoMoTai-202505230047, 2025-06-09 batch) and on-device JieYue terminal AI (2026-09 batch, per media reports) — which filing covers the chat product was not separately verified.

备案信息以网信办《生成式人工智能服务已备案信息》公示名单为准（按批次滚动更新，本站只抄编号不解读）；「大陆可直连」是本站从大陆网络直连实测的结果，不是厂商承诺。GitHub 类站点当日实测有波动，口径写在依据里。Filing status is quoted from the CAC public registry (updated batch by batch; this site copies the number and does not interpret it). "Direct access" is this site's own reachability measurement from a mainland network, not a vendor promise. GitHub-hosted sites fluctuated on the measurement day — the note says so.

固定坐标系Fixed coordinate system

8 个维度dimensions, 与同分区其他对象逐项可比each comparable item by item against others in the same section.

模型与开放条件Model & openness: 阶跃星辰自研 Step 系列——开放权重线在 Hugging Face 有组织页（huggingface.co/stepfun-ai 当日 200，如 step 系列开源模型）；对话产品内选模型形态以登录后界面为准（未登录核实）。
StepFun's self-developed Step series — the open-weights line has an org page on Hugging Face (huggingface.co/stepfun-ai fetched 200 same day, e.g. the step series open models); the in-product model-picking form is only visible after login (not verified logged in).
运行位置Where it runs: 网页（chat.stepfun.com，页内品牌为「阶跃AI」）+ App；生成在阶跃云端。当日页内可见 StepClaw、Step Audio Studio（ASR）等产品线入口；本机不跑模型。
Web (chat.stepfun.com, branded "Jieyue AI" in-page) + App; generation runs on StepFun's cloud. Product-line entries visible in-page on the day: StepClaw, Step Audio Studio (ASR); nothing runs locally.
本地文件Local files: 对话历史登录同步（页内「Please log in to access your history」当日所见）；未见官方声明的本机数据面。
Chat history syncs after login (in-page "Please log in to access your history" seen on the day); no locally-held data surface declared by the vendor was found.
关机后的任务Tasks after shutdown: 对话即时返回；异步任务形态未核验到官方声明。StepClaw（agent 向）入口当日在册，其执行形态未逐条核验。
Chat returns instantly; no official statement verified for an async-task form. The StepClaw (agent-oriented) entry is on record on the day; its execution form not verified item by item.
工具与扩展Tools & extensions: 当日页内可见 Web Search Tool、知识库问答（Knowledge Base Q&A）、StepClaw、Step Audio Studio 等能力入口； MCP 支持未逐条核验。
In-page entries visible on the day: Web Search Tool, Knowledge Base Q&A, StepClaw, Step Audio Studio; MCP support not verified item by item.
上下文与记忆Context & memory: 会话历史登录同步；跨会话记忆机制未核验到官方声明（未知就说未知）。
Chat history syncs after login; no official statement verified for cross-session memory (say unknown when unknown).
权限与限制Permissions & limits: 账号体系（登录使用）；训练用途开关路径未逐条核验。备案号见 cn 块（网信办公示 PDF 镜像交叉核验）。
Account system (login required); training-usage toggle path not verified item by item. Filing number in the cn block (cross-verified via CAC batch PDF mirror).
适合什么任务Best for: 适合：要国产对话+开放权重生态联动的用户（同厂商 HF 有权重可本地跑，见 models 站阶跃系列）、大陆直连可用。不适合：要脱离阶跃账号、要在对话产品里跑本地模型。
Fits: users wanting domestic chat linked with the open-weights ecosystem (the same vendor's weights can run locally — quantized entries on the models site); direct access from the mainland. Not a fit: leaving the StepFun account, running local models inside the chat product.

头号误解Top misconception

「阶跃AI 对话产品」与「Step 开放权重」是两条线——对话产品不跑本地权重，权重线经 HF 组织页自部署（models 站有量化档案）The Step Chat product and the Step open weights are two lines — the chat product does not run local weights; the weights line self-deploys via the HF org page (quantized entries on the models site)
备案号主语是「阶跃」大模型（Shanghai-JieYue-20231106，2023-11-24 备案）；后续另有「阶跃多模态」备案（2025-06-09）——多模态能力对应哪个备案要按公示批次看The filing number's subject is the "JieYue" LLM (Shanghai-JieYue-20231106, filed 2023-11-24); a separate "JieYue multimodal" filing exists (2025-06-09) — which filing covers which multimodal capability should be read per public batch
官网 www.stepfun.com 是厂商门户（当日纯 JS 壳，正文要经 /chat 看产品）——别把门户当对话入口www.stepfun.com is the vendor portal (a pure JS shell on the day; the product is seen via /chat) — do not mistake the portal for the chat entry

未知项清单Known unknowns

对话产品内模型档位分流（未登录核实）
StepClaw 执行位置与续跑行为（未核验）
跨会话记忆机制（未核验到官方声明）
对话产品对应的备案条目（备案号主语是「阶跃」大模型，多模态/端侧另有备案）

In-product model-tier routing (not verified logged in)
StepClaw's execution location and resume behavior (unverified)
Cross-session memory mechanism (no official statement verified)
Which filing entry covers the chat product (the filing number's subject is the JieYue LLM; multimodal/on-device have separate filings)

证据来源Evidence sources

判断可回到以下一手源复核。本站核验日Every judgement can be rechecked against the primary sources below. Verified on 2026-10-30，内容更新日content updated on 2026-10-30。

类型Type	名称Name	链接Link
official	阶跃AI · 对话入口 chat.stepfun.com（2026-10-30 直抓 200）Step Chat · chat entry chat.stepfun.com (direct-fetched 200 on 2026-10-30)	https://chat.stepfun.com
official	阶跃星辰 · 厂商门户（2026-10-30 直抓 200）StepFun · vendor portal (direct-fetched 200 on 2026-10-30)	https://www.stepfun.com
changelog	阶跃星辰 · News（官方更新线，changelog，2026-10-30 直抓 200）StepFun · News (official update line, changelog, direct-fetched 200 on 2026-10-30)	https://www.stepfun.com/news
official	阶跃星辰 · 隐私页（2026-10-30 直抓 200）StepFun · privacy page (direct-fetched 200 on 2026-10-30)	https://www.stepfun.com/privacy
repo	StepFun · Hugging Face 组织页（开放权重线，2026-10-30 代理抓 200）StepFun · Hugging Face org page (open-weights line, proxy-fetched 200 on 2026-10-30)	https://huggingface.co/stepfun-ai
official	生成式人工智能服务已备案信息（2024年4月批 PDF 镜像：阶跃 / 上海阶跃星辰智能科技有限公司 / Shanghai-JieYue-20231106 / 2023-11-24）Filed generative-AI services (April 2024 batch PDF mirror: JieYue / Shanghai Jieyue Xingchen Intelligent Technology / Shanghai-JieYue-20231106 / 2023-11-24)	https://www.tjcac.gov.cn/wxdt/qg/202511/W020251112373334243305.pdf

实测记录Measured runs

本档未跑对话任务集；能力结论来自官方文档，不评价回答质量。

实测建议（三条，都指向官方可读页没给的东西）：

登录后模型档位选择器实际形态（当日未登录页只见「Tap @ to explore more」）
StepClaw 的执行形态（agent 入口在册，跑在哪、能否续跑未核验）
训练用途开关路径与默认态

This site has not completed measured runs. The coding-oriented test protocol is at protocols/coding/_protocol.md (the coding task suite does not apply to chat products).

Suggested measurements (three, all pointing at things the official readable pages do not give):

The actual model-tier selector after login (the logged-out page on the day only shows "Tap @ to explore more")
StepClaw's execution form (agent entry on record; where it runs, whether it can resume unverified)
Training-usage toggle path and default state