facebook/sam2.1-hiera-large
facebook/sam2.1-hiera-large is a facebook record on this register. The Hugging Face model API lists the pipeline tag as mask-generation. The safetensors index gives an exact parameter count of 224,447,154. The listed licence is apache-2.0. The Hub repository was created on 24 Sept 2024, which is the release date this register uses.
This is a size or version checkpoint of Meta’s SAM 2 family. The sourced page is facebook/sam2-hiera-large.
Primary source: the Hugging Face model card for facebook/sam2.1-hiera-large. Fields below come from that card, the Hub model API, and the repository’s own config.json when those files exist. A field we cannot source is omitted rather than guessed.
| Organisation | |
|---|---|
| ReleasedRepo creation date on Hugging Face | 24 Sept 2024 |
| Last modified | 15 Aug 2025 |
| ParametersExact, from the safetensors index | 224M 224,447,154 |
| Licence | apache-2.0 |
| Pipeline / taskpipeline_tag on the Hugging Face model API | mask-generation |
| File formats | safetensors |
| Librarylibrary_name on the Hugging Face model API | transformers |
| Architecture | sam2_video |
| Layers | 2 |
| DownloadsAt last check | 282.2k |
| Likes | 153 |
| Gated | No |
No context length is shown because max_position_embeddings was not readable from config.json.
How to run
Safetensors weights are on the Hugging Face repository. The parameter count on this page came from that index.
The Hugging Face model API lists the library as transformers.
Load it from huggingface.co/facebook/sam2.1-hiera-large. This page does not add install steps that the Hub files do not state.
Agent capabilities
This model publishes no chat template, so there is nothing to inspect. That is not evidence of missing support — many base models and some releases simply ship without one.
Questions this record can answer
- When was sam2.1-hiera-large released?
- The Hugging Face repository was created on 24 Sept 2024, which is the date this register uses.
- How many parameters does sam2.1-hiera-large have?
- The safetensors index gives 224,447,154 parameters, shown here as 224M. That figure is exact, not rounded.
- What licence is sam2.1-hiera-large under?
- The Hub card lists apache-2.0.
- Is sam2.1-hiera-large gated?
- No. The Hugging Face model API does not mark this repository as gated.
Where each field came from
- Hugging Face model API — releasedAt, lastModified, downloads, likes, task, license, gated, parameters, libraryName, formats. Checked 20 Oct 2026.
- config.json — layers, architecture. Checked 20 Oct 2026.
First recorded 20 Oct 2026, last checked 20 Oct 2026. This record is compiled automatically from the sources above. Where a field is blank, we could not source it and have not guessed. Canonical repository: huggingface.co/facebook/sam2.1-hiera-large. This page is a size or version checkpoint of facebook/sam2-hiera-large. It is kept for completeness, excluded from the sitemap, and marked noindex.