Update README.md

README.md

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-license: mit
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+---
+license: mit
+pipeline_tag: text-generation
+tags: [ONNX, ONNXRuntime, phi3.5, nlp, conversational, custom_code]
+inference: false
+---
+
+Based on https://huggingface.co/microsoft/Phi-4-mini-instruct
+
+Convert ONNX model by using https://github.com/microsoft/onnxruntime-genai
+
+Using command: python -m onnxruntime_genai.models.builder -m microsoft/Phi-4-mini-instruct -o Phi-4-mini-instruct-onnx -e webgpu -c cache-dir -p int4 --extra_options int4_block_size=32 int4_accuracy_level=4
+
+The generated external data (model.onnx.data) is larger than 2GB, which is not suitable for ORT-Web. I use an additional Python script to move some data into model.onnx.