MetaSAM
SAM 3
SAM 3 detects, segments and tracks objects identified by short text concepts or visual prompts.
What the release provides
Its detector and tracker share a vision encoder. The repository lists 848M parameters and requires an access request for checkpoint downloads.SAM 3 official repository
How to use it well
Practical guidance. Use a concise object description and inspect every returned instance. Objects with similar appearance can merge or be missed. Keep the mask aligned with the original image dimensions before using it for editing or measurement.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | Downloadable |
| Model identifiers | facebook/sam3 |