StepFun Model License 1.0
Licence text headed "StepFun Model License 1.0" in the Step-5-Preview Hugging Face repository, cited at the commit of 13 October 2026.
- Issued by
- StepFun / 阶跃星辰
- Authors credited
- No authorship claim recorded yet. The source record lists StepFun.
- Dates
- Published 2026-10-13 issue evidence
- Exact source
- Step-5-Preview LICENSE.txt (StepFun Model License 1.0) StepFun (stepfun-ai, Hugging Face) · published 2026-10-13 · Dated document, retrieved on 2026-10-29 (SHA-256 01aa781a1a68a9007cb01dadf93ead44a31ee0dcd49e13c854c4129b4a894b83) directly from the publisher. Version: f3112587a3eb4b2144b93e95df52b7eb8c78bf7d. LICENSE.txt at the commit of 13 October 2026 ("Upload 2 files"), which added LICENSE.txt and LICENSE-CN.txt; the file at the commit of 15 October 2026 is byte-identical. The Chinese LICENSE-CN.txt was retrieved but not quoted.
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Issue and authorship records
- Issued by: StepFun / 阶跃星辰StepFun added to the Step-5-Preview Hugging Face repository on 13 October 2026 a licence headed "StepFun Model License 1.0", which the model card describes as an Apache-2.0-style licence with additional attribution and commercial-licence conditions.2026-10-13 · publication · Stated in source · Supported Inspect claim & evidence ↗StepFun / 阶跃星辰: institution →
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What the document states
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- Statement"Powered by StepFun AI" display for products above 100 million monthly active users or US$20 million monthly revenue“has more than 100,000,000 active users or generates revenue exceeding US$20,000,000”Section 2(b), "Attribution"Inspect claim & evidence ↗
- StatementSeparate commercial licence for device makers and for MaaS operators above US$20 million revenue“You must enter into a separate commercial license agreement with StepFun AI before You or Your affiliates”Section 2(c), "Commercial License"Inspect claim & evidence ↗
- StatementA model trained to a material extent on the model's outputs counts as a Derivative Work“A model trained to a material extent on outputs of the Model is deemed to reproduce or contain a substantial part of the Model.”Section 1, definition of "Derivative Work"Inspect claim & evidence ↗