yolo26n-seg (ONNX)

The official Ultralytics YOLO26n-seg COCO weights (yolo26n-seg.pt), exported unchanged to ONNX so they can run in the browser with onnxruntime-web. Not fine-tuned.

Input	images — float32 [1, 3, 640, 640], RGB 0–1, letterboxed (pad 114)
Output 0	[1, 116, 8400] = box cx, cy, w, h + 80 class scores + 32 mask coefficients. NMS is not included
Output 1	[1, 32, 160, 160] mask prototypes — mask = sigmoid(coefficients · prototypes), cropped to the box
Size	ONNX 11.2 MB (opset 17, simplified) · source .pt 6.7 MB
Classes	COCO 80

Used by the model-card site AI Models Organize (YOLO26n-seg card → «돌려보기»).

License

AGPL-3.0, inherited from Ultralytics YOLO.