vit large patch16 dinov3.sat493m EU AI Act Compliance Profile

Model card for vit_large_patch16_dinov3.sat493m

A DINOv3 ViT model image feature encoder. Distilled on SAT-493M from the DINOv3 ViT-7B model.

Model Notes

• The original model weights ended up with all QKV projection biases being zeroes. For timm, have disabled the QKV bias (qkv_bias=False) for the models and not loaded the zero weights. For some model sizes there are variants with qkvb in the name that have the bias enabled (qkv_bias=True), but zero, to match the behaviour of transformers and original models.
• The original models keep RoPE periods as a persistent bfloat16 buffer. timm generates float32 periods at init. This results in some numerical differences, however the timm approach should be less problematic running on devices without bfloat16 support, and appears to work as well if not slightly better for fine-tuning. model.rope.periods = model.rope.periods.to(torch.bfloat16).to(torch.float32) will truncate the periods to bfloat16 and result in matching outputs.

Model Details

• Model Type: Image Feature Encoder
• Model Stats:
  • Params (M): 303.1
  • GMACs: 82.4
  • Activations (M): 90.6
  • Image size: 256 x 256
• Original: https://github.com/facebookresearch/dinov3
• License: DINOv3
• Dataset: SAT-493M
• Papers:
  • DINOv3: https://arxiv.org/abs/2508.10104
  • An Image is Worth 16x16 Words: Transformers for Image Recognition at Scale: https://arxiv.org/abs/2010.11929v2
  • PyTorch Image Models: https://github.com/huggingface/pytorch-image-models

Model Usage

Image Classification

from urllib.request import urlopen
from PIL import Image
import timm

img = Image.open(urlopen(
    'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
))

model = timm.create_model('vit_large_patch16_dinov3.sat493m', pretrained=True)
model = model.eval()

# get model specific transforms (no

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