sam3

library0.1.4pypypiunverified

Implementation of SAM3 (Segment Anything Model 3) from Facebook Research. Version 0.1.4, early release with frequent updates.

ai-ml

pip install sam3

github ↗homepage ↗

INSTALL

IMPORT

SIG · SAM3

sam3

ai-mlpythonv0.1.4

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

Sam3Predictor

✓ from sam3 import Sam3Predictor

✗ from sam3.predictor import Sam3Predictor

Import path changed from underscore to dot notation in v0.1.3

Initialize SAM3 predictor with model type and checkpoint.

from sam3 import Sam3Predictor import torch predictor = Sam3Predictor( model_type="sam3_huge", checkpoint="sam3_huge.pth", device="cuda" if torch.cuda.is_available() else "cpu" ) print("SAM3 predictor ready")

Debug

Known issues

breakingv0.1.3 changed the predictor import path. Old code using `from sam3.predictor import Sam3Predictor` will break.

fix

Use `from sam3 import Sam3Predictor`.

affects: v0.1.0 to v0.1.2

breakingCheckpoint files are not bundled; must be downloaded separately from GitHub releases. Code may fail silently if checkpoint is missing.

fix

Download checkpoint from https://github.com/facebookresearch/sam3/releases.

affects: all

gotchaDevice fallback: CPU inference is extremely slow. Always use CUDA if available.

fix

Pass `device="cuda"` explicitly or check `torch.cuda.is_available()`.

affects: all

Upgrade

Version history

0.1.4latest on PyPI · released May 26, 2026

Audit

Dependencies

torchrequiredPyTorch backend

pillowrequiredImage handling

numpyrequiredArray operations

Agent activity

16 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/facebookresearch/sam3 ↗

homepagehttps://github.com/facebookresearch/sam3 ↗