Claim · 2025-07-31 · publication · Stated in source · Supported

StepFun released the step3 code repository and model weights under the Apache License, Version 2.0, as stated in the model card and LICENSE file of its Hugging Face repository on 31 July 2025.

One recorded claim. The claim panel gives its qualification, the source passages with their place in each source, and how it was checked.

What it connects

StepFun / 阶跃星辰 → published → step3 Apache License 2.0 file

Where it appears

No collection page holds this claim. It is listed with its records in the explorer.

Claim and evidence

StepFun / 阶跃星辰published ↓step3 Apache License 2.0 file

Machine-checked, not reviewed by an editorStated in sourceSupported

Supporting evidence: primary · 2 sources

Date: 2025-07-31 · publication Records dated 2025 →

Scope and limitsThe licence is described as the text describes itself; no judgement is made whether the release meets any definition of open source. The record covers the repository named; other StepFun models carry their own licence statements.

The evidence 02

primary sourceSupports the claim

step3 model card (README.md)

StepFun (stepfun-ai, Hugging Face) · 2025-07-31

Cite the original source

Cite the original document, not Selekoa. Check these details against it.

Source excerpt

“Both the code repository and the model weights are released under the”

Location in source README, "License"

How it was read Retrieved directly from the publisher

Machine-checked · 2026-10-31

Source details and check notes

Authors: StepFun
Version: Dated page, retrieved on 2026-10-29 (SHA-256 243260dbd2d842c4748a113871014bd0dfc50190db89be1bc77cba1e2b0007a3) directly from the publisher. Version: 5fe5f2aff383cd9d0195ca7a8e673384ce30c228. README at the commit of 31 July 2025 ("Update README.md"), the first after the LICENSE file was created; the repository's initial commit is of 28 July 2025; later README edits (to 2 August 2025) not inspected.
Canonical address: Open the canonical source ↗
Accessed: 2026-10-29
Language: English (en)
Attribution: StepFun, “step3 model card (README.md)”, 2025-07-31.
Reuse: No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution.
Check notes: Candidate pack passage, Chinese frontier-AI institutions, third collection (research/china-labs-3). The quotation (12 words) matched the text retrieved for the candidate pack on 2026-10-29 and again in a fresh retrieval the same day, read directly from the publisher. Matching ignored differences of whitespace, case, quotation marks, dashes and Unicode compatibility forms, so the source’s typography can differ. A cross-family machine check (2026-10-31, item K080) answered the record’s question blind from fresh retrievals and agreed with the record. No human editorial review.

primary sourceSupports the claim

step3 LICENSE (Apache License 2.0)

StepFun (stepfun-ai, Hugging Face) · 2025-07-31

Cite the original source

Cite the original document, not Selekoa. Check these details against it.

Source excerpt

“Apache License Version 2.0, January 2004”

Location in source LICENSE, heading

How it was read Retrieved directly from the publisher

Machine-checked · 2026-10-31

Source details and check notes

Authors: StepFun
Version: Dated document, retrieved on 2026-10-29 (SHA-256 58d1e17ffe5109a7ae296caafcadfdbe6a7d176f0bc4ab01e12a689b0499d8bd) directly from the publisher. Version: 5fe5f2aff383cd9d0195ca7a8e673384ce30c228. LICENSE file as it stood at the cited commit of 31 July 2025; the file was created by the commit "Create LICENSE" earlier that day.
Canonical address: Open the canonical source ↗
Accessed: 2026-10-29
Language: English (en)
Attribution: StepFun, “step3 LICENSE (Apache License 2.0)”, 2025-07-31.
Reuse: No open redistribution licence asserted. Bibliographic metadata, editorial paraphrases and short attributed quotations (at most 50 words each). Recheck terms before wider redistribution.
Check notes: Candidate pack passage, Chinese frontier-AI institutions, third collection (research/china-labs-3). The quotation (6 words) matched the text retrieved for the candidate pack on 2026-10-29 and again in a fresh retrieval the same day, read directly from the publisher. Matching ignored differences of whitespace, case, quotation marks, dashes and Unicode compatibility forms, so the source’s typography can differ. A cross-family machine check (2026-10-31, item K080) answered the record’s question blind from fresh retrievals and agreed with the record. No human editorial review.

Status and meaning

Editorial status. Not reviewed by an editor. An exploratory record that no editor has accepted. This status does not say whether a person has read any linked passage. Each evidence record above shows how it was checked.

Relation. Publication of a specific document or version. Publication of a policy is not evidence of implementation.

Date. Date of the cited commit; the LICENSE file was created on the same day.

Record ID c3-stepfun-step3-licence