StepFun 阶跃星辰
Chinese multimodal frontier-model lab founded by Microsoft Research veteran
Overview
StepFun is a Shanghai-based frontier-model lab founded by Jiang Daxin (former Microsoft Research Asia chief scientist). Publishes the Step series of LLMs — Step-1 (chat), Step-2 (frontier), Step-Video (text-to-video), Step-Audio — competing across the full multimodal stack against Baidu, Tencent and ByteDance.
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阶跃星辰由前微软亚洲研究院首席科学家姜大昕创立，总部位于上海。发布 Step 系列模型——Step-1（对话）、Step-2（前沿）、Step-Video（文生视频）、Step-Audio——在多模态全栈层面与百度、腾讯、字节展开正面竞争。
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 19 May 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
Use cases
ASEAN Perspective
StepFun 阶跃星辰 in Southeast Asia
团队学术背景与多模态全栈布局是其差异化。在中国市场被视为继 MiniMax、Moonshot、Zhipu 之后的下一档头部实验室。
StepFun (阶跃星辰) is a well-funded Chinese AI lab building capable multimodal Step models, with an OpenAI-compatible API, realtime voice tooling and recent open-source releases such as Step 3.7 Flash aimed at agentic use. For developers wanting access to a strong China-origin multimodal stack, the models are genuinely competitive.
The big caveat for international and ASEAN users: StepFun's English-facing web app (stepfun.ai) was discontinued in May 2026, leaving primarily the China-hosted platform (api.stepfun.com), which raises practical hurdles around documentation, billing, latency and data residency for non-China teams. Open-weight releases are the most accessible path outside China.
About this listing
This entry was compiled from publicly available data including StepFun 阶跃星辰's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with StepFun 阶跃星辰 unless explicitly stated.
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