SigLIP2: Optimized for Qualcomm Devices

SigLIP2 (Sigmoid Loss for Language-Image Pre-training 2) is a vision-language model from Google that computes cosine-similarity scores between images and text prompts. It can be used for zero-shot image classification, image search, and content moderation without any task-specific fine-tuning.

This is based on the implementation of SigLIP2 found here. This repository contains pre-exported model files optimized for Qualcomm® devices. You can use the Qualcomm® AI Hub Models library to export with custom configurations. More details on model performance across various devices, can be found here.

Qualcomm AI Hub Models uses Qualcomm AI Hub Workbench to compile, profile, and evaluate this model. Sign up to run these models on a hosted Qualcomm® device.

Getting Started

There are two ways to deploy this model on your device:

Option 1: Download Pre-Exported Models

Below are pre-exported model assets ready for deployment.

Runtime	Precision	Chipset	SDK Versions	Download
ONNX	float	Universal	QAIRT 2.45, ONNX Runtime 1.27.1	Download
ONNX	w8a16	Universal	QAIRT 2.45, ONNX Runtime 1.27.1	Download
QNN_DLC	float	Universal	QAIRT 2.45	Download
QNN_DLC	w8a16	Universal	QAIRT 2.45	Download
TFLITE	float	Universal	QAIRT 2.45	Download

For more device-specific assets and performance metrics, visit SigLIP2 on Qualcomm® AI Hub.

Option 2: Export with Custom Configurations

Use the Qualcomm® AI Hub Models Python library to compile and export the model with your own:

Custom weights (e.g., fine-tuned checkpoints)
Custom input shapes
Target device and runtime configurations

This option is ideal if you need to customize the model beyond the default configuration provided here.

See our repository for SigLIP2 on GitHub for usage instructions.

Model Details

Model Type: Model_use_case.image_classification

Model Stats:

Image input resolution: 224x224
Model checkpoint: google/siglip2-base-patch16-224
Model size (image_encoder) (float): 352 MB
Model size (image_encoder) (w8a16): 92.8 MB
Model size (text_encoder) (float): 1.05 GB
Model size (text_encoder) (w8a16): 461 MB
Text sequence length: 64

Performance Summary

Model	Runtime	Precision	Chipset	Inference Time (ms)	Peak Memory Range (MB)	Primary Compute Unit
image_encoder	ONNX	float	Snapdragon® X2 Elite	4.738 ms	2 - 2 MB	NPU
image_encoder	ONNX	float	Snapdragon® X Elite	8.828 ms	182 - 182 MB	NPU
image_encoder	ONNX	float	Snapdragon® 8 Gen 3 Mobile	5.893 ms	1 - 311 MB	NPU
image_encoder	ONNX	float	Snapdragon® 8 Gen 1 Mobile	13.248 ms	1 - 294 MB	NPU
image_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-8275	11.923 ms	0 - 4 MB	NPU
image_encoder	ONNX	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	8.445 ms	0 - 613 MB	NPU
image_encoder	ONNX	float	Qualcomm® QCS8450	13.248 ms	1 - 294 MB	NPU
image_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-9075	11.472 ms	0 - 4 MB	NPU
image_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-X7181	8.828 ms	182 - 182 MB	NPU
image_encoder	ONNX	float	Qualcomm® Dragonwing™ Q-8750	4.241 ms	0 - 176 MB	NPU
image_encoder	ONNX	float	Snapdragon® 8 Elite Mobile	4.241 ms	0 - 176 MB	NPU
image_encoder	ONNX	float	Snapdragon® 8 Elite Gen 5 Mobile	3.262 ms	1 - 167 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® X2 Elite	3.05 ms	1 - 1 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® X Elite	5.544 ms	91 - 91 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 8 Gen 3 Mobile	3.675 ms	0 - 290 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 8 Gen 1 Mobile	7.195 ms	0 - 280 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ QCS6490	23.34 ms	2 - 5 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-8275	5.066 ms	0 - 4 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ QCS8550 (Proxy)	5.282 ms	0 - 98 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® QCS8450	7.195 ms	0 - 280 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-9075	5.258 ms	0 - 3 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-X7181	5.544 ms	91 - 91 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-6690	53.198 ms	0 - 395 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-7790	6.998 ms	0 - 270 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-8750	2.837 ms	0 - 236 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 8 Elite Mobile	2.837 ms	0 - 236 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 8 Elite Gen 5 Mobile	2.083 ms	0 - 238 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 7 Gen 4 Mobile	6.998 ms	0 - 270 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® X2 Elite	3.989 ms	1 - 1 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® X Elite	9.205 ms	1 - 1 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® 8 Gen 3 Mobile	6.047 ms	0 - 264 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® 8 Gen 1 Mobile	13.512 ms	0 - 243 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-8275	12.117 ms	1 - 4 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	8.574 ms	1 - 3 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA8775P	11.417 ms	1 - 175 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA8650P	11.417 ms	1 - 175 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA8255P	11.417 ms	1 - 175 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® QCS8450	13.512 ms	0 - 243 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-9075	11.475 ms	1 - 3 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-X7181	9.205 ms	1 - 1 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ Q-8750	4.242 ms	0 - 176 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA7255P	36.986 ms	1 - 174 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA8295P	14.146 ms	1 - 150 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® 8 Elite Mobile	4.242 ms	0 - 176 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® 8 Elite Gen 5 Mobile	3.396 ms	1 - 164 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® X2 Elite	4.005 ms	0 - 0 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® X Elite	9.137 ms	0 - 0 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® 8 Gen 3 Mobile	5.545 ms	0 - 311 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-8275	7.5 ms	0 - 3 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ QCS8550 (Proxy)	8.443 ms	0 - 282 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® SA8775P	8.664 ms	0 - 255 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® SA8650P	8.664 ms	0 - 255 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® SA8255P	8.664 ms	0 - 255 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-9075	8.445 ms	2 - 4 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-X7181	9.137 ms	0 - 0 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-6690	92.12 ms	0 - 419 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-7790	13.929 ms	0 - 402 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-8750	4.478 ms	0 - 254 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® SA7255P	19.111 ms	0 - 253 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® 8 Elite Mobile	4.478 ms	0 - 254 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® 8 Elite Gen 5 Mobile	3.28 ms	0 - 257 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® 7 Gen 4 Mobile	13.929 ms	0 - 402 MB	NPU
image_encoder	TFLITE	float	Snapdragon® 8 Gen 3 Mobile	5.92 ms	0 - 263 MB	NPU
image_encoder	TFLITE	float	Snapdragon® 8 Gen 1 Mobile	13.235 ms	0 - 241 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-8275	11.996 ms	0 - 184 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	8.398 ms	0 - 2 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA8775P	11.269 ms	0 - 176 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA8650P	11.269 ms	0 - 176 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA8255P	11.269 ms	0 - 176 MB	NPU
image_encoder	TFLITE	float	Qualcomm® QCS8450	13.235 ms	0 - 241 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-9075	11.364 ms	0 - 184 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ Q-8750	4.16 ms	0 - 180 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA7255P	36.747 ms	0 - 175 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA8295P	13.923 ms	0 - 161 MB	NPU
image_encoder	TFLITE	float	Snapdragon® 8 Elite Mobile	4.16 ms	0 - 180 MB	NPU
image_encoder	TFLITE	float	Snapdragon® 8 Elite Gen 5 Mobile	3.297 ms	0 - 170 MB	NPU
text_encoder	ONNX	float	Snapdragon® X2 Elite	1.39 ms	1 - 1 MB	NPU
text_encoder	ONNX	float	Snapdragon® X Elite	2.9 ms	542 - 542 MB	NPU
text_encoder	ONNX	float	Snapdragon® 8 Gen 3 Mobile	2.752 ms	0 - 251 MB	NPU
text_encoder	ONNX	float	Snapdragon® 8 Gen 1 Mobile	4.465 ms	0 - 244 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-8275	3.753 ms	0 - 4 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	3.513 ms	0 - 643 MB	NPU
text_encoder	ONNX	float	Qualcomm® QCS8450	4.465 ms	0 - 244 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-9075	3.519 ms	0 - 3 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-X7181	2.9 ms	542 - 542 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ Q-8750	2.409 ms	0 - 138 MB	NPU
text_encoder	ONNX	float	Snapdragon® 8 Elite Mobile	2.409 ms	0 - 138 MB	NPU
text_encoder	ONNX	float	Snapdragon® 8 Elite Gen 5 Mobile	2.405 ms	0 - 140 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® X2 Elite	0.834 ms	1 - 1 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® X Elite	1.722 ms	460 - 460 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 8 Gen 3 Mobile	1.453 ms	0 - 272 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 8 Gen 1 Mobile	2.832 ms	0 - 276 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ QCS6490	8.105 ms	0 - 3 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-8275	2.051 ms	0 - 3 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ QCS8550 (Proxy)	1.866 ms	0 - 514 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® QCS8450	2.832 ms	0 - 276 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-9075	2.189 ms	0 - 3 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-X7181	1.722 ms	460 - 460 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-6690	13.234 ms	0 - 258 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-7790	2.847 ms	0 - 239 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-8750	1.268 ms	0 - 231 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 8 Elite Mobile	1.268 ms	0 - 231 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 8 Elite Gen 5 Mobile	1.245 ms	0 - 234 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 7 Gen 4 Mobile	2.847 ms	0 - 239 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® X2 Elite	1.757 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® X Elite	3.062 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® 8 Gen 3 Mobile	2.686 ms	0 - 249 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® 8 Gen 1 Mobile	4.467 ms	0 - 237 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-8275	3.743 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	3.499 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA8775P	3.655 ms	0 - 133 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA8650P	3.655 ms	0 - 133 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA8255P	3.655 ms	0 - 133 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® QCS8450	4.467 ms	0 - 237 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-9075	3.505 ms	2 - 4 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-X7181	3.062 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ Q-8750	2.401 ms	0 - 134 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA7255P	10.029 ms	0 - 134 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA8295P	4.649 ms	0 - 123 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® 8 Elite Mobile	2.401 ms	0 - 134 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® 8 Elite Gen 5 Mobile	2.388 ms	0 - 137 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® X2 Elite	1.052 ms	1 - 1 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® X Elite	1.945 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® 8 Gen 3 Mobile	1.456 ms	0 - 261 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-8275	2.067 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ QCS8550 (Proxy)	1.909 ms	0 - 955 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® SA8775P	2.216 ms	0 - 226 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® SA8650P	2.216 ms	0 - 226 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® SA8255P	2.216 ms	0 - 226 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-9075	2.078 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-X7181	1.945 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-6690	13.635 ms	0 - 261 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-7790	2.825 ms	0 - 237 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-8750	1.281 ms	0 - 227 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® SA7255P	4.02 ms	0 - 226 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® 8 Elite Mobile	1.281 ms	0 - 227 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® 8 Elite Gen 5 Mobile	1.254 ms	0 - 229 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® 7 Gen 4 Mobile	2.825 ms	0 - 237 MB	NPU
text_encoder	TFLITE	float	Snapdragon® 8 Gen 3 Mobile	2.737 ms	0 - 253 MB	NPU
text_encoder	TFLITE	float	Snapdragon® 8 Gen 1 Mobile	4.461 ms	0 - 244 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-8275	3.779 ms	0 - 543 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	3.502 ms	0 - 3 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA8775P	3.699 ms	0 - 142 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA8650P	3.699 ms	0 - 142 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA8255P	3.699 ms	0 - 142 MB	NPU
text_encoder	TFLITE	float	Qualcomm® QCS8450	4.461 ms	0 - 244 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-9075	3.526 ms	0 - 543 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ Q-8750	2.412 ms	0 - 146 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA7255P	10.064 ms	0 - 143 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA8295P	4.671 ms	0 - 129 MB	NPU
text_encoder	TFLITE	float	Snapdragon® 8 Elite Mobile	2.412 ms	0 - 146 MB	NPU
text_encoder	TFLITE	float	Snapdragon® 8 Elite Gen 5 Mobile	2.403 ms	0 - 146 MB	NPU

License

The license for the original implementation of SigLIP2 can be found here.

References

Community

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Paper for qualcomm/SigLIP2

SigLIP 2: Multilingual Vision-Language Encoders with Improved Semantic Understanding, Localization, and Dense Features

Paper • 2502.14786 • Published Feb 20, 2025 • 169