Models 2026-11: SAM 3

SAM 3 (facebook/sam3, revision 3c879f39826c281e95690f02c7821c4de09afae7) exported to ONNX for rascal-tools' sam3 segmenter (end to end: text prompt to instances and masks; three graphs, the CLIP tokenizer). Install with rascal tools get sam3. Licence: the SAM License (Meta), LICENSE.sam3.txt, which goes with every copy; this export is a derivative of SAM Materials and is distributed under it, and its use restrictions bind whoever uses it. Gates: graph parity (mask logits within 4.1e-3), instance parity, segment-01 corpus 20/20 at IoU >= 0.999987. See tools/python/MODEL.md.