---
title: "S1-mini: the declared licence has the file, and the link works"
description: "S1-mini by Superwhisper, 0.6B parameters: Apache 2.0 licence, LICENSE file present, link verified HTTP 200 — against three preceding cases without that file."
url: https://csidia.com/en/notes/s1-mini-licenza-dichiarata-file-presente/
lang: en
date: 2026-08-22
label: "Observatory"
publisher: CSIDIA S.r.l. (https://csidia.com/)
italiano: https://csidia.com/note-operative/s1-mini-licenza-dichiarata-file-presente/
---

# S1-mini: the declared licence has the file, and the link works

`superwhisper/s1-mini` appeared on Hugging Face on 12 August 2026: `createdAt` **2026-08-12T14:33:55Z**, last modified **2026-08-21T17:16:30Z**. We queried it on 22 August: **1,913 downloads**, **198 likes**, **12 files**, a single `.safetensors` shard. Tags: `transformers`, `qwen3`, `text-generation`, `asr`, `text-normalization`, `speech-to-text`, `dictation`, `license:other`. Who is Superwhisper? The organisation behind the dictation app of the same name for Mac; **2 users**, **2 models**, **1 Space**, **82 followers**, not verified (`isVerified: false`) — smaller, on every metric, than the organisations behind the three cases we checked over the previous three days.

## A corrector, not a chatbot, and it says so plainly

S1-mini doesn't generate free text: it takes a raw transcript from an ASR engine — Whisper, Parakeet or another — and rewrites it clean, fillers removed, self-corrections resolved, punctuation and capitalisation applied according to a register chosen by whoever integrates it. The card states this without ambiguity: "S1-mini is not a chat model and will not follow general instructions; it does one job." `config.json` confirms `Qwen3ForCausalLM`, a fine-tune of Qwen3-0.6B: 28 layers, 16/8-head GQA, `hidden_size` 1024, context up to **40,960 tokens** inherited from the base — though the card recommends staying under **1,000 tokens** of input, the task it was trained for.

On hardware the card is explicit, an exception among cards that say nothing at all: "the quantized build is a 462 MiB file that runs comfortably on a laptop CPU." The parameter count is corrected by hand: the Hub sidebar shows 0.8B, but the text explains that the 155.6M-parameter embedding is counted twice, for **751.6 million tensor elements** against **596.0 million unique parameters** — the API confirms the first figure: **751,632,384**. Evaluated on **7,519 cases** in English, it declares **94.8% token accuracy**, measured on the quantised GGUF Q4_K_M build and not on the BF16 weights in this repository: only the latter "should do at least as well", with no figure of its own.

## The declared licence has the file, where the link says it does

Here comes the line-by-line check — the one that, over the previous three days, found a gap three times running. The public tag is `license:other`; the YAML front matter adds `license_name: s1-mini-license` and `license_link: LICENSE`, a relative path, not an absolute URL as in Ornith's case. We resolved it: `https://huggingface.co/superwhisper/s1-mini/raw/main/LICENSE` returns **HTTP 200**. The file exists and is exactly what the link promises. The other variants the platform uses for this document — `LICENSE.md`, `LICENCE`, `NOTICE`, `USE_POLICY.md`, `ACCEPTABLE_USE.md`, `TERMS.md` — **404 on all six**: there isn't a missing second restricting document, there simply isn't one. `gated` is `false`, verified without authenticating: API **200**, web page too.

The file is the Apache License 2.0 in full, followed by a clause that amends it: "any use, distribution, or integration of this model [...] must continue to identify it by its original name, 'S1-mini' by 'Superwhisper', using that exact capitalization, regardless of any other name under which the model or a product incorporating it is marketed or distributed." A single added condition, declared in the licence's own name (`s1-mini-license`), not buried in a footnote.

This isn't an isolated case in the positive sense, after three days of the opposite: on 19 August, [Ant Group's Ling-3.0-tiny](https://csidia.com/en/notes/ling-3-0-tiny-licenza-dichiarata-file-assente), licence declared and file absent; on 20 August, [Tencent's UI-Mate-27B](https://csidia.com/en/notes/ui-mate-27b-agente-pesi-aperti-permessi-desktop), the same pattern; on 21 August, [Ornith-1.5-397B](https://csidia.com/en/notes/ornith-1-5-397b-licenza-dichiarata-terzo-caso), with a link to a specific file that still returned 404. We found a fourth case today too, by way of contrast: `sensenova/SenseNova-U1.5-8B-MoT`, published on 19 August by the organisation tied to SenseTime (not verified, 37 users, 35 models, 504 followers), declares `license:apache-2.0` in its tags but has none of the five licence files — the same 404 across the board. We won't recount it in detail: the difference, today, is that the alternative exists.

## Even here, one promise that doesn't hold

The card carries a clickable badge: "Releases are tagged, so you can pin one," with the instruction `revision="v1"` and a link to `/tree/v1`. We opened it: **HTTP 404**, on the page and on `raw`. The references listed via the API (`/refs`) confirm it: **no tags**, a single branch, `main`. The sibling repository `superwhisper/s1-mini-GGUF`, created two hours later, carries its own `LICENSE`, verified **200**; the other links the card promises — the website, Discord, `Qwen/Qwen3-0.6B`, the arXiv paper — all return **200**. Three Spaces already built on the model within ten days, including the organisation's own (Gradio, tagged `mcp-server`, **200**): the same model, no extra capability beyond the weights — unlike other cases we've checked, there is no hosted version here with functions the weights lack. A licence done well isn't a perfect licence: there's still a badge promising a tag that doesn't exist. But here the problem is cosmetic, not the missing file.

## The perimeter, even when the model is small

[Downloadable weights without the compute that makes them runnable aren't sovereignty](https://csidia.com/en/hardware-and-open-weight-models): here the compute isn't an obstacle — 462 MiB, a laptop CPU, no cluster to get approved. And that's exactly why the discipline of the register matters more, not less: once hardware stops being a barrier, anyone can do the download, with no procurement department any the wiser. The same question we ask about an 800 GB model applies to a 462 MiB one: who downloaded it, under which licence archived in the text of the day, with which approved uses and approved by whom. [The technical report a model card ought to provide before installation](https://csidia.com/en/notes/rapporto-tecnico-modello-cosa-dichiara) is nearly all present here: architecture, hardware, evaluation method, limits openly admitted. For a body that handles meeting transcripts — [in government](https://csidia.com/en/sectors/public-sector) a dictated minute is as official a document as the act that follows it — the naming clause changes nothing for internal use: it's downstream distribution, if the model ends up inside a resold product, that belongs in the register alongside version and digest.

## What we don't know

We haven't run the model: no verification of ours on the declared accuracy (94.8%), calculated by the publisher on its own test set, not included in the repository. We don't know what transcripts it was trained on, nor whether they contain real voices collected with verifiable consent. We don't know the organisation's corporate structure: no registered office, no legal form stated. We make no legal qualification of the additional licence clause, a text for whoever has to apply it to read, not an opinion of ours. We report the state verified on 22 August 2026; a link that works today may stop working tomorrow, like the `v1` tag that today, simply, doesn't exist.

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## Sources

- [Hugging Face — superwhisper/s1-mini, model card](https://huggingface.co/superwhisper/s1-mini)
- [Hugging Face — model API (metadata, files, tags)](https://huggingface.co/api/models/superwhisper/s1-mini)
- [Hugging Face — superwhisper/s1-mini, LICENSE file](https://huggingface.co/superwhisper/s1-mini/raw/main/LICENSE)

Note by CSIDIA S.r.l. (Vignola, MO, Italy): https://csidia.com/en/notes/s1-mini-licenza-dichiarata-file-presente/ · Who we are and what we do: https://csidia.com/en/at-a-glance/ · engagement@csidia.com