MetaSAM
SAM 3.1
SAM 3.1 adds Object Multiplex to track several objects jointly through shared memory.
What the release provides
The March 2026 release supplies new checkpoints and optimized inference. Objects are grouped into fixed-capacity buckets instead of being processed independently.SAM 3.1 release notes
How to use it well
Practical guidance. For a crowded video, review identity continuity when objects cross or leave the frame. Joint tracking changes the serving behavior as object count grows. Measure the whole clip pipeline, including decoding and mask export.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Launch date | |
| Access | Downloadable, API |
| Model identifiers | sam-3.1facebook/sam3.1 |
| Managed API | sam-3.1 on Meta Model APICurrent Meta Model API catalog |