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	4.737 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	5.89 ms	0 - 309 MB	NPU
image_encoder	ONNX	float	Snapdragon® 8 Gen 1 Mobile	13.29 ms	1 - 293 MB	NPU
image_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-8275	11.992 ms	0 - 4 MB	NPU
image_encoder	ONNX	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	8.454 ms	0 - 194 MB	NPU
image_encoder	ONNX	float	Qualcomm® QCS8450	13.29 ms	1 - 293 MB	NPU
image_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-9075	12.863 ms	1 - 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	4.244 ms	0 - 177 MB	NPU
image_encoder	ONNX	float	Snapdragon® 8 Elite Mobile	4.244 ms	0 - 177 MB	NPU
image_encoder	ONNX	float	Snapdragon® 8 Elite Gen 5 Mobile	3.235 ms	1 - 167 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® X2 Elite	2.393 ms	1 - 1 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® X Elite	5.555 ms	90 - 90 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 8 Gen 3 Mobile	3.664 ms	0 - 290 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 8 Gen 1 Mobile	7.586 ms	2 - 282 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ QCS6490	23.282 ms	2 - 5 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-8275	5.071 ms	0 - 4 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ QCS8550 (Proxy)	5.293 ms	0 - 118 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® QCS8450	7.586 ms	2 - 282 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-9075	5.26 ms	0 - 3 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-X7181	5.555 ms	90 - 90 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-6690	54.258 ms	0 - 398 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-7790	6.994 ms	0 - 270 MB	NPU
image_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-8750	2.857 ms	0 - 236 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 8 Elite Mobile	2.857 ms	0 - 236 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 8 Elite Gen 5 Mobile	2.102 ms	0 - 239 MB	NPU
image_encoder	ONNX	w8a16	Snapdragon® 7 Gen 4 Mobile	6.994 ms	0 - 270 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® X2 Elite	4.008 ms	1 - 1 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® X Elite	9.243 ms	1 - 1 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® 8 Gen 3 Mobile	6.033 ms	0 - 264 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® 8 Gen 1 Mobile	13.642 ms	0 - 242 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-8275	12.113 ms	1 - 4 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-8275	37.021 ms	1 - 174 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	8.55 ms	1 - 2 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA8775P	11.398 ms	1 - 175 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA8650P	11.398 ms	1 - 175 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA8255P	11.398 ms	1 - 175 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® QCS8450	13.642 ms	0 - 242 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-9075	11.25 ms	1 - 3 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-X7181	9.243 ms	1 - 1 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ Q-8750	4.233 ms	1 - 176 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA7255P	37.021 ms	1 - 174 MB	NPU
image_encoder	QNN_DLC	float	Qualcomm® SA8295P	14.17 ms	1 - 150 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® 8 Elite Mobile	4.233 ms	1 - 176 MB	NPU
image_encoder	QNN_DLC	float	Snapdragon® 8 Elite Gen 5 Mobile	3.401 ms	1 - 163 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® X2 Elite	4.048 ms	0 - 0 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® X Elite	9.173 ms	0 - 0 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® 8 Gen 3 Mobile	5.536 ms	0 - 313 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-8275	7.491 ms	0 - 3 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-8275	19.113 ms	0 - 253 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ QCS8550 (Proxy)	8.427 ms	0 - 2 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® SA8775P	8.674 ms	0 - 255 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® SA8650P	8.674 ms	0 - 255 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® SA8255P	8.674 ms	0 - 255 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-9075	8.464 ms	2 - 4 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-X7181	9.173 ms	0 - 0 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-6690	92.066 ms	0 - 422 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-7790	13.912 ms	0 - 401 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-8750	4.467 ms	0 - 254 MB	NPU
image_encoder	QNN_DLC	w8a16	Qualcomm® SA7255P	19.113 ms	0 - 253 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® 8 Elite Mobile	4.467 ms	0 - 254 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® 8 Elite Gen 5 Mobile	3.251 ms	0 - 256 MB	NPU
image_encoder	QNN_DLC	w8a16	Snapdragon® 7 Gen 4 Mobile	13.912 ms	0 - 401 MB	NPU
image_encoder	TFLITE	float	Snapdragon® 8 Gen 3 Mobile	5.918 ms	0 - 271 MB	NPU
image_encoder	TFLITE	float	Snapdragon® 8 Gen 1 Mobile	13.259 ms	0 - 242 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-8275	12.079 ms	0 - 184 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-8275	36.75 ms	0 - 175 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	8.058 ms	0 - 2 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA8775P	11.282 ms	0 - 176 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA8650P	11.282 ms	0 - 176 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA8255P	11.282 ms	0 - 176 MB	NPU
image_encoder	TFLITE	float	Qualcomm® QCS8450	13.259 ms	0 - 242 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-9075	11.143 ms	0 - 184 MB	NPU
image_encoder	TFLITE	float	Qualcomm® Dragonwing™ Q-8750	4.162 ms	0 - 180 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA7255P	36.75 ms	0 - 175 MB	NPU
image_encoder	TFLITE	float	Qualcomm® SA8295P	13.929 ms	0 - 161 MB	NPU
image_encoder	TFLITE	float	Snapdragon® 8 Elite Mobile	4.162 ms	0 - 180 MB	NPU
image_encoder	TFLITE	float	Snapdragon® 8 Elite Gen 5 Mobile	3.304 ms	0 - 169 MB	NPU
text_encoder	ONNX	float	Snapdragon® X2 Elite	1.483 ms	1 - 1 MB	NPU
text_encoder	ONNX	float	Snapdragon® X Elite	2.896 ms	542 - 542 MB	NPU
text_encoder	ONNX	float	Snapdragon® 8 Gen 3 Mobile	2.733 ms	0 - 253 MB	NPU
text_encoder	ONNX	float	Snapdragon® 8 Gen 1 Mobile	4.483 ms	0 - 244 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-8275	3.768 ms	0 - 4 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	3.509 ms	0 - 643 MB	NPU
text_encoder	ONNX	float	Qualcomm® QCS8450	4.483 ms	0 - 244 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-9075	3.51 ms	0 - 3 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ IQ-X7181	2.896 ms	542 - 542 MB	NPU
text_encoder	ONNX	float	Qualcomm® Dragonwing™ Q-8750	2.446 ms	0 - 139 MB	NPU
text_encoder	ONNX	float	Snapdragon® 8 Elite Mobile	2.446 ms	0 - 139 MB	NPU
text_encoder	ONNX	float	Snapdragon® 8 Elite Gen 5 Mobile	2.4 ms	0 - 140 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® X2 Elite	0.853 ms	1 - 1 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® X Elite	1.716 ms	459 - 459 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 8 Gen 3 Mobile	1.452 ms	0 - 271 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 8 Gen 1 Mobile	2.801 ms	0 - 275 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ QCS6490	8.218 ms	0 - 3 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-8275	2.097 ms	0 - 3 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ QCS8550 (Proxy)	1.859 ms	0 - 515 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® QCS8450	2.801 ms	0 - 275 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-9075	2.194 ms	0 - 3 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ IQ-X7181	1.716 ms	459 - 459 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-6690	13.217 ms	0 - 259 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-7790	2.849 ms	0 - 239 MB	NPU
text_encoder	ONNX	w8a16	Qualcomm® Dragonwing™ Q-8750	1.266 ms	0 - 233 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 8 Elite Mobile	1.266 ms	0 - 233 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 8 Elite Gen 5 Mobile	1.248 ms	0 - 233 MB	NPU
text_encoder	ONNX	w8a16	Snapdragon® 7 Gen 4 Mobile	2.849 ms	0 - 239 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® X2 Elite	1.582 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® X Elite	3.091 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® 8 Gen 3 Mobile	2.696 ms	0 - 245 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® 8 Gen 1 Mobile	4.476 ms	0 - 238 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-8275	3.75 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-8275	10.032 ms	0 - 133 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	3.496 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA8775P	3.643 ms	0 - 134 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA8650P	3.643 ms	0 - 134 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA8255P	3.643 ms	0 - 134 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® QCS8450	4.476 ms	0 - 238 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-9075	3.497 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ IQ-X7181	3.091 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® Dragonwing™ Q-8750	2.489 ms	0 - 135 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA7255P	10.032 ms	0 - 133 MB	NPU
text_encoder	QNN_DLC	float	Qualcomm® SA8295P	4.65 ms	0 - 122 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® 8 Elite Mobile	2.489 ms	0 - 135 MB	NPU
text_encoder	QNN_DLC	float	Snapdragon® 8 Elite Gen 5 Mobile	2.388 ms	0 - 135 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® X2 Elite	1.047 ms	1 - 1 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® X Elite	1.941 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® 8 Gen 3 Mobile	1.455 ms	0 - 261 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-8275	2.073 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-8275	3.988 ms	0 - 226 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ QCS8550 (Proxy)	1.885 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® SA8775P	2.249 ms	0 - 227 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® SA8650P	2.249 ms	0 - 227 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® SA8255P	2.249 ms	0 - 227 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-9075	2.079 ms	0 - 2 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ IQ-X7181	1.941 ms	0 - 0 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® Dragonwing™ Q-6690	14.42 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	1.28 ms	0 - 227 MB	NPU
text_encoder	QNN_DLC	w8a16	Qualcomm® SA7255P	3.988 ms	0 - 226 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® 8 Elite Mobile	1.28 ms	0 - 227 MB	NPU
text_encoder	QNN_DLC	w8a16	Snapdragon® 8 Elite Gen 5 Mobile	1.257 ms	0 - 228 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	2.729 ms	0 - 259 MB	NPU
text_encoder	TFLITE	float	Snapdragon® 8 Gen 1 Mobile	4.453 ms	0 - 241 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-8275	3.749 ms	0 - 543 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-8275	10.083 ms	0 - 142 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ QCS8550 (Proxy)	3.501 ms	0 - 3 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA8775P	3.676 ms	0 - 142 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA8650P	3.676 ms	0 - 142 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA8255P	3.676 ms	0 - 142 MB	NPU
text_encoder	TFLITE	float	Qualcomm® QCS8450	4.453 ms	0 - 241 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ IQ-9075	3.528 ms	0 - 543 MB	NPU
text_encoder	TFLITE	float	Qualcomm® Dragonwing™ Q-8750	2.41 ms	0 - 146 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA7255P	10.083 ms	0 - 142 MB	NPU
text_encoder	TFLITE	float	Qualcomm® SA8295P	4.685 ms	0 - 129 MB	NPU
text_encoder	TFLITE	float	Snapdragon® 8 Elite Mobile	2.41 ms	0 - 146 MB	NPU
text_encoder	TFLITE	float	Snapdragon® 8 Elite Gen 5 Mobile	2.411 ms	0 - 147 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