StepFun

上海阶跃星辰智能科技股份有限公司

organization·foundation model company·active

Shanghai foundation-model company and co-lead of the open ACE-Step music-generation project.

Recorded facts

Official site	https://www.stepfun.com/ ↗
Geography	Shanghai, mainland China
legal status	private company
music ai activity	ACE-Step co-development
other audio activity	speech generation; voice cloning

Current

co developed	ACE-Step 1.5 BaseSource 1 ↗ PARTY CLAIM high confidence
co develops	ACE-Step 1.5 BaseSource 1 ↗ VERIFIED high confidence
co develops	ACE-Step 1.5 TurboSource 1 ↗ VERIFIED high confidence

Sources & changes

Checked 10d ago · highhow verification works

Field-level evidence

VERIFIEDentity typecited source ↗

PARTY CLAIMsubtypecited source ↗

VERIFIEDcanonical namecited source ↗

VERIFIEDoriginal namescited source ↗

VERIFIEDStatuscited source ↗

PARTY CLAIMshort descriptioncited source ↗

VERIFIEDOfficial URLcited source ↗

VERIFIEDprimary geographycited source ↗

VERIFIEDdates.establishedcited source ↗

PARTY CLAIMlegal statuscited source ↗

PARTY CLAIMmusic ai activitycited source ↗

PARTY CLAIMother audio activitycited source ↗

PARTY CLAIMRecordcited source ↗

Public change history

19 Jul 2026

Status unknown → active
Official URL unknown → www.stepfun.com
Record maintenance · 12 fields updated

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