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KevinAHM
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soprano-onnx

ONNX
qwen3
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Soprano ONNX (KV Cache)

This repository hosts ONNX exports of the Soprano 80M model with KV caching.

Contents

  • onnx/soprano_backbone_kv.onnx (backbone with past_key_values)
  • onnx/soprano_decoder.onnx + onnx/soprano_decoder.onnx.data (vocoder decoder)
  • / (tokenizer assets)

Inference & demo

See the streaming inference code here: https://github.com/KevinAHM/soprano-web-onnx

Not compatible with WebGPU via onnxruntime-web as of January 2026.

Upstream

Original project: https://github.com/ekwek1/soprano

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