Note: This project uses the flutter_onnxruntime package (https://pub.dev/packages/flutter_onnxruntime). At the moment, only the macOS platform has been tested. Although the flutter_onnxruntime package supports several other platforms, they have not been tested in this project yet and may require additional verification.

📰 Update News

2026.04.29 - 🎉 Supertonic 3 released with 31-language support, improved reading accuracy, and v2-compatible public ONNX assets. Demo | Models

2025.12.10 - Added 6 new voice styles (M3, M4, M5, F3, F4, F5). See Voices for details

2025.12.08 - Optimized ONNX models via OnnxSlim now available on Hugging Face Models

2025.11.23 - Added and tested macos support.

Multilingual Support

Supertonic 3 supports 31 languages. Select the appropriate language from the dropdown; see the main README for the full code list.

Requirements

Flutter SDK version ^3.5.0

Running the Demo

flutter clean
flutter pub get
flutter run -d macos