Segment Anything Model 3.1
Model overview
SAM 3.1
Meta's current public SAM 3.1 open-weight promptable segmentation model for images and video.
segmentationobject trackingvisual segmentationevaluationlocal inference
Representative version
SAM 3.1
| Company | Meta |
|---|---|
| Release | Not disclosed |
| Release type | Model release |
| Parameters | Not disclosed |
| Architecture | Not disclosed |
| Context | Not disclosed |
| Input modalities | image / video / text |
| Output modalities | structured_output |
| Tool use / function calling | Tool use: Not disclosed; Function calling: Not disclosed |
| Structured output / reasoning | Confirmed: Structured output |
| Vision / audio / video | Confirmed: Vision, Video; Not shown: Audio |
| Open weights / License | Weights available / license pending verification meta-sam-3-1-current · License source pending verification |
| Vendor API | Not disclosed API source pending verification |
| OpenRouter | Not separately listed on OpenRouter |
| Pricing | No reliable public source |
| Benchmark | No reliable public source |
| Public signals | 1 activity snapshot |
| Use cases | visual segmentation / research evaluation / local inference / segmentation |
| Claim evidence | Release event / Model specifications / Weight checkpointSegment Anything Model 3 and Segment Anything Model 3.1 are here | Meta AISAM 3.1 · Segment Anything Model 3.1 · SAM 3.1 |
OpenRouter
Pricing / context / availability
| OpenRouter | Not separately listed on OpenRouter |
|---|---|
| OpenRouter listing | Not separately listed in the current OpenRouter public list |
| Mapped version | SAM 3.1 meta-sam-3-1-current |
| Pricing | No reliable public source |
| Context | Not disclosed |
| Speed/Latency | No reliable public source |
| Snapshot time | 2026-08-11T06:28:09.895Z |
| Source | View source |
Public activity counters
Hugging Face model-card activity snapshot
| Platform | Entry | Last-month downloads | Current likes | Current Spaces | Time | Source |
|---|---|---|---|---|---|---|
| huggingface Current HF activity snapshot | facebook/sam3.1 | 74,429 | 514 | 7 | View source |
Downloads are Hugging Face's trailing-month counter; likes and Spaces are snapshots at collection time.
Missing public information
Public information not yet available
Parameter scale not disclosedRelease date not disclosedNot listed on OpenRouterNo reliable benchmark sourceNo linkable model-specific reviewSpeed/latency not disclosed