Claim · 2026-02-01 · publication · Stated in source · Supported

StepFun's Step-3.5-Flash model card stated on 1 February 2026 that the project is open-sourced under the Apache 2.0 License.

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 → Step-3.5-Flash licence statement (Apache 2.0)

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 ↓Step-3.5-Flash licence statement (Apache 2.0)

Machine-checked, not reviewed by an editorStated in sourceSupported

Supporting evidence: primary · 1 source

Date: 2026-02-01 · publication Records dated 2026 →

Scope and limitsThe record reports the model card's own licence statement and its metadata tag; the repository holds no separate LICENSE file at the cited commit. "Open-sourced" is the card's word; no judgement is made whether the release meets any definition of open source.

The evidence 02

primary sourceSupports the claim

Step-3.5-Flash model card (README.md)

StepFun (stepfun-ai, Hugging Face) · 2026-02-01

Cite the original source

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

Source excerpt

“This project is open-sourced 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 35e70016dc43ef4698859e3461a09aadabf51377401c3afbac8eb0b98c44577c) directly from the publisher. Version: 3eb118b80899d48a319a06e32c6ba66bcd38d0e7. README at the commit of 1 February 2026 (15:52 UTC); the repository's initial commit is of the same day; many later README edits (to 17 March 2026) not inspected.
Canonical address: Open the canonical source ↗
Accessed: 2026-10-29
Language: English (en)
Attribution: StepFun, “Step-3.5-Flash model card (README.md)”, 2026-02-01.
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 K096) answered the record’s question blind from fresh retrievals and agreed with the record. No human editorial review.

primary sourceSupports the claim

Step-3.5-Flash model card (README.md)

StepFun (stepfun-ai, Hugging Face) · 2026-02-01

Cite the original source

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

Source excerpt

“license: apache-2.0”

Location in source README, metadata header

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 35e70016dc43ef4698859e3461a09aadabf51377401c3afbac8eb0b98c44577c) directly from the publisher. Version: 3eb118b80899d48a319a06e32c6ba66bcd38d0e7. README at the commit of 1 February 2026 (15:52 UTC); the repository's initial commit is of the same day; many later README edits (to 17 March 2026) not inspected.
Canonical address: Open the canonical source ↗
Accessed: 2026-10-29
Language: English (en)
Attribution: StepFun, “Step-3.5-Flash model card (README.md)”, 2026-02-01.
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 (2 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 K096) 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 of the model card.

Record ID c3-stepfun-step35-licence