| --- |
| license: other |
| license_name: sam-license |
| license_link: LICENSE |
| base_model: facebook/sam3 |
| tags: |
| - mirror |
| - cuvis-ai |
| - sam3 |
| - segmentation |
| --- |
| |
| # SAM 3 (Segment Anything with Concepts) checkpoint (mirror) |
|
|
| Byte-identical mirror of [`facebook/sam3`](https://huggingface.co/facebook/sam3) at revision `3c879f39826c281e95690f02c7821c4de09afae7` for the |
| [Cuvis.AI](https://github.com/cubert-hyperspectral/cuvis-ai) plugins. No fine-tuning, |
| conversion or re-serialization: the files below are the upstream release as published, |
| with the upstream licence text in `LICENSE`. |
|
|
| ## Why this mirror exists |
|
|
| Cuvis.AI provisions model weights once into a shared cache (`download-model download |
| <name>` from `cuvis-ai-core`) and then runs its pipelines in an offline, token-free |
| runtime that only reads that cache. Hosting the exact upstream files under the |
| `cubert-gmbh` organisation makes that provisioning reproducible (commit-pinned and |
| sha256-verified) and takes the per-user Hugging Face account and token out of the |
| users' path. |
|
|
| ## Files and provenance |
|
|
| | File | Upstream source | Upstream revision / id | sha256 | Size | |
| |---|---|---|---|---| |
| | `sam3.pt` | `facebook/sam3` / `sam3.pt` | `3c879f39826c281e95690f02c7821c4de09afae7` | `9999e2341ceef5e136daa386eecb55cb414446a00ac2b55eb2dfd2f7c3cf8c9e` | 3.45 GB | |
| | `config.json` | `facebook/sam3` / `config.json` | `3c879f39826c281e95690f02c7821c4de09afae7` | `4616385e4b21f2e5e22c875b65679185cbccfa95de42542b9166f7dc3d57160f` | 25.8 kB | |
| | `LICENSE` | `facebook/sam3` / `LICENSE` | `3c879f39826c281e95690f02c7821c4de09afae7` | `bec48f70bd37bf8280a9d1ebf01642d26086f6122ba735baa08fe03c5a6e7448` | 7.4 kB | |
|
|
| Mirrored on 2026-09-04 by Cubert GmbH from the sources above. The sha256 values are the |
| upstream values; `tools/mirror_weights.py check` in `cuvis-ai-core` re-verifies this |
| repository against them and against the upstream licence text. |
|
|
| ## Licence |
|
|
| These files are Meta's "SAM Materials" and are distributed under the **SAM License** |
| (Last Updated: November 19, 2025), reproduced verbatim in `LICENSE`. By downloading |
| or using them you agree to be bound by that Agreement. Section 1.b.i allows |
| redistribution only under the same terms and with a copy of the Agreement, which is |
| what this repository does. |
|
|
| Obligations that travel with the files: |
|
|
| - You may not use, or permit others to use, the SAM Materials for any activities |
| subject to the International Traffic in Arms Regulations (ITAR) or end uses |
| prohibited by Trade Controls, including those related to military or warfare |
| purposes, nuclear industries or applications, espionage, or the development or use |
| of guns or illegal weapons (section 1.b.v). You must not be the target of Trade |
| Controls, and your use must comply with Trade Controls and applicable laws, |
| including privacy and data-protection laws (sections 1.b.iii and 1.b.v). |
| - Publications of research performed with the SAM Materials must acknowledge their |
| use (section 1.b.ii). Reverse engineering the SAM Materials is not permitted |
| (section 1.b.iv). |
| - The SAM Materials are provided "as is" without warranties (section 3); Meta may |
| modify the Agreement (section 8), so check the upstream text for the current |
| version. |
| - If you allege in litigation that the SAM Materials or their outputs infringe |
| intellectual property or other rights you own or can license, your licence |
| terminates on the day the claim is filed, and you indemnify Meta against |
| third-party claims arising from your use or distribution of the SAM Materials |
| (section 5.b). On termination you must delete and cease use of the SAM Materials |
| (section 6). |
|
|
| The upstream repository `facebook/sam3` is gated; this mirror is ungated. Cubert GmbH |
| redistributes these files as a Licensee under section 1.b.i and is itself bound by |
| the Agreement, including the indemnity in section 5.b, for its own distribution. You |
| are bound directly and separately by the same Agreement, including sections 5.b and |
| 6 above. Cubert GmbH is not affiliated with or endorsed by Meta. |
|
|
| ## Usage with Cuvis.AI |
|
|
| ```text |
| uv run download-model download sam3 |
| ``` |
|
|
| `download-model` (from `cuvis-ai-core`) provisions the file into the shared Hugging |
| Face cache and verifies its sha256. From cuvis-ai-core 0.16.0 on, |
| `ModelWeights.resolve("<name>")` returns the cached path and the `cuvis-ai-sam3` nodes |
| resolve their weights through it, so a pipeline needs no manual step once the |
| weights are provisioned; earlier plugin releases still fetch from their original |
| upstream sources. |
|
|
