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Published 29 hours ago
SDKFlutter
PlatformAndroidiOSLinuxmacOSwebWindows
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Metadata

Speech recognition, speech synthesis, and speaker recognition using next-gen Kaldi with onnxruntime without Internet connection.

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example/example.md

sherpa-onnx app example #

Contents #

Pre-built Flutter apps #

Download pre-built Flutter apps for different platforms at https://github.com/k2-fsa/sherpa-onnx/releases/tag/flutter

VAD from file #

VAD model: Silero VAD

Platform File
Android (arm64-v8a) flutter-vad-from-file-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-from-file-armeabi-v7a.apk
Android (x86_64) flutter-vad-from-file-x86_64.apk
Linux (x64) flutter-vad-from-file-linux-x64.zip
macOS flutter-vad-from-file-macos.zip
Windows (x64) flutter-vad-from-file-win-x64.zip
Web flutter-vad-from-file-web.zip

VAD from microphone #

VAD model: Silero VAD

Platform File
Android (arm64-v8a) flutter-vad-from-microphone-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-from-microphone-armeabi-v7a.apk
Android (x86_64) flutter-vad-from-microphone-x86_64.apk
Linux (x64) flutter-vad-from-microphone-linux-x64.zip
macOS flutter-vad-from-microphone-macos.zip
Windows (x64) flutter-vad-from-microphone-win-x64.zip
Web flutter-vad-from-microphone-web.zip

VAD + ASR from file #

VAD model: Silero VAD

Zipformer CTC (Chinese)

ASR model: sherpa-onnx-zipformer-ctc-zh-int8-2025-07-03 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-zipformer-ctc-zh-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-zipformer-ctc-zh-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-zipformer-ctc-zh-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-zipformer-ctc-zh-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-zipformer-ctc-zh-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-zipformer-ctc-zh-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-zipformer-ctc-zh-web.zip

SenseVoice (Chinese/English/Japanese/Korean/Cantonese)

ASR model: sherpa-onnx-sense-voice-zh-en-ja-ko-yue-2024-07-17 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-sense-voice-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-sense-voice-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-sense-voice-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-sense-voice-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-sense-voice-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-sense-voice-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-sense-voice-web.zip

Whisper tiny.en (English)

ASR model: sherpa-onnx-whisper-tiny.en — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-whisper-tiny-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-whisper-tiny-en-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-whisper-tiny-en-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-whisper-tiny-en-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-whisper-tiny-en-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-whisper-tiny-en-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-whisper-tiny-en-web.zip

NeMo Parakeet TDT v2 (English)

ASR model: sherpa-onnx-nemo-parakeet-tdt-0.6b-v2-int8 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v2-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v2-en-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v2-en-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v2-en-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v2-en-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v2-en-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v2-en-web.zip

NeMo Parakeet TDT v3 (25 European languages)

ASR model: sherpa-onnx-nemo-parakeet-tdt-0.6b-v3-int8 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v3-eu-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v3-eu-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v3-eu-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v3-eu-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v3-eu-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v3-eu-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-nemo-parakeet-v3-eu-web.zip

Moonshine tiny (English)

ASR model: sherpa-onnx-moonshine-tiny-en-quantized-2026-02-27 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-moonshine-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-moonshine-en-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-moonshine-en-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-moonshine-en-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-moonshine-en-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-moonshine-en-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-moonshine-en-web.zip

Qwen3 ASR 0.6B (multilingual)

ASR model: sherpa-onnx-qwen3-asr-0.6B-int8-2026-03-25 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-qwen3-asr-multi-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-qwen3-asr-multi-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-qwen3-asr-multi-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-qwen3-asr-multi-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-qwen3-asr-multi-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-qwen3-asr-multi-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-qwen3-asr-multi-web.zip

FunASR Nano (Chinese/English/Japanese)

ASR model: sherpa-onnx-funasr-nano-int8-2025-12-30 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-funasr-nano-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-funasr-nano-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-funasr-nano-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-funasr-nano-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-funasr-nano-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-funasr-nano-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-funasr-nano-web.zip

FireRed ASR CTC v2 (Chinese/English)

ASR model: sherpa-onnx-fire-red-asr2-ctc-zh_en-int8-2026-02-25 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-file-firered-ctc-zh-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-file-firered-ctc-zh-en-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-file-firered-ctc-zh-en-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-file-firered-ctc-zh-en-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-file-firered-ctc-zh-en-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-file-firered-ctc-zh-en-win-x64.zip
Web flutter-vad-non-streaming-asr-from-file-firered-ctc-zh-en-web.zip

VAD + ASR from microphone #

VAD model: Silero VAD

Zipformer CTC (Chinese)

ASR model: sherpa-onnx-zipformer-ctc-zh-int8-2025-07-03 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-zipformer-ctc-zh-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-zipformer-ctc-zh-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-zipformer-ctc-zh-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-zipformer-ctc-zh-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-zipformer-ctc-zh-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-zipformer-ctc-zh-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-zipformer-ctc-zh-web.zip

SenseVoice (Chinese/English/Japanese/Korean/Cantonese)

ASR model: sherpa-onnx-sense-voice-zh-en-ja-ko-yue-2024-07-17 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-sense-voice-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-sense-voice-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-sense-voice-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-sense-voice-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-sense-voice-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-sense-voice-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-sense-voice-web.zip

Whisper tiny.en (English)

ASR model: sherpa-onnx-whisper-tiny.en — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-whisper-tiny-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-whisper-tiny-en-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-whisper-tiny-en-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-whisper-tiny-en-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-whisper-tiny-en-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-whisper-tiny-en-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-whisper-tiny-en-web.zip

NeMo Parakeet TDT v2 (English)

ASR model: sherpa-onnx-nemo-parakeet-tdt-0.6b-v2-int8 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v2-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v2-en-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v2-en-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v2-en-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v2-en-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v2-en-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v2-en-web.zip

NeMo Parakeet TDT v3 (25 European languages)

ASR model: sherpa-onnx-nemo-parakeet-tdt-0.6b-v3-int8 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v3-eu-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v3-eu-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v3-eu-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v3-eu-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v3-eu-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v3-eu-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-nemo-parakeet-v3-eu-web.zip

Moonshine tiny (English)

ASR model: sherpa-onnx-moonshine-tiny-en-quantized-2026-02-27 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-moonshine-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-moonshine-en-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-moonshine-en-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-moonshine-en-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-moonshine-en-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-moonshine-en-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-moonshine-en-web.zip

Qwen3 ASR 0.6B (multilingual)

ASR model: sherpa-onnx-qwen3-asr-0.6B-int8-2026-03-25 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-qwen3-asr-multi-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-qwen3-asr-multi-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-qwen3-asr-multi-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-qwen3-asr-multi-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-qwen3-asr-multi-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-qwen3-asr-multi-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-qwen3-asr-multi-web.zip

FunASR Nano (Chinese/English/Japanese)

ASR model: sherpa-onnx-funasr-nano-int8-2025-12-30 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-funasr-nano-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-funasr-nano-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-funasr-nano-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-funasr-nano-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-funasr-nano-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-funasr-nano-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-funasr-nano-web.zip

FireRed ASR CTC v2 (Chinese/English)

ASR model: sherpa-onnx-fire-red-asr2-ctc-zh_en-int8-2026-02-25 — download

Platform File
Android (arm64-v8a) flutter-vad-non-streaming-asr-from-microphone-firered-ctc-zh-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-vad-non-streaming-asr-from-microphone-firered-ctc-zh-en-armeabi-v7a.apk
Android (x86_64) flutter-vad-non-streaming-asr-from-microphone-firered-ctc-zh-en-x86_64.apk
Linux (x64) flutter-vad-non-streaming-asr-from-microphone-firered-ctc-zh-en-linux-x64.zip
macOS flutter-vad-non-streaming-asr-from-microphone-firered-ctc-zh-en-macos.zip
Windows (x64) flutter-vad-non-streaming-asr-from-microphone-firered-ctc-zh-en-win-x64.zip
Web flutter-vad-non-streaming-asr-from-microphone-firered-ctc-zh-en-web.zip

Streaming speech recognition #

Streaming Zipformer Bilingual (Chinese/English)

ASR model: sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20 — download

Platform File
Android (arm64-v8a) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20-arm64-v8a.apk
Android (armeabi-v7a) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20-armeabi-v7a.apk
Android (x86_64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20-x86_64.apk
Linux (x64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20-linux-x64.zip
macOS flutter-streaming_asr-sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20-macos.zip
Windows (x64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-bilingual-zh-en-2023-02-20-win-x64.zip

Streaming Zipformer (English)

ASR model: sherpa-onnx-streaming-zipformer-en-2023-06-26 — download

Platform File
Android (arm64-v8a) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-en-2023-06-26-arm64-v8a.apk
Android (armeabi-v7a) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-en-2023-06-26-armeabi-v7a.apk
Android (x86_64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-en-2023-06-26-x86_64.apk
Linux (x64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-en-2023-06-26-linux-x64.zip
macOS flutter-streaming_asr-sherpa-onnx-streaming-zipformer-en-2023-06-26-macos.zip
Windows (x64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-en-2023-06-26-win-x64.zip

Streaming Zipformer WenetSpeech (Chinese)

ASR model: icefall-asr-zipformer-streaming-wenetspeech-20230615 — download

Platform File
Android (arm64-v8a) flutter-streaming_asr-icefall-asr-zipformer-streaming-wenetspeech-20230615-arm64-v8a.apk
Android (armeabi-v7a) flutter-streaming_asr-icefall-asr-zipformer-streaming-wenetspeech-20230615-armeabi-v7a.apk
Android (x86_64) flutter-streaming_asr-icefall-asr-zipformer-streaming-wenetspeech-20230615-x86_64.apk
Linux (x64) flutter-streaming_asr-icefall-asr-zipformer-streaming-wenetspeech-20230615-linux-x64.zip
macOS flutter-streaming_asr-icefall-asr-zipformer-streaming-wenetspeech-20230615-macos.zip
Windows (x64) flutter-streaming_asr-icefall-asr-zipformer-streaming-wenetspeech-20230615-win-x64.zip

Streaming Zipformer (French)

ASR model: sherpa-onnx-streaming-zipformer-fr-2023-04-14 — download

Platform File
Android (arm64-v8a) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-fr-2023-04-14-arm64-v8a.apk
Android (armeabi-v7a) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-fr-2023-04-14-armeabi-v7a.apk
Android (x86_64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-fr-2023-04-14-x86_64.apk
Linux (x64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-fr-2023-04-14-linux-x64.zip
macOS flutter-streaming_asr-sherpa-onnx-streaming-zipformer-fr-2023-04-14-macos.zip
Windows (x64) flutter-streaming_asr-sherpa-onnx-streaming-zipformer-fr-2023-04-14-win-x64.zip

X-ASR 960ms (Chinese/English, with punctuation)

ASR model: sherpa-onnx-x-asr-960ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05 — download

Platform File
Android (arm64-v8a) flutter-streaming_asr-sherpa-onnx-x-asr-960ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-arm64-v8a.apk
Android (armeabi-v7a) flutter-streaming_asr-sherpa-onnx-x-asr-960ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-armeabi-v7a.apk
Android (x86_64) flutter-streaming_asr-sherpa-onnx-x-asr-960ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-x86_64.apk
Linux (x64) flutter-streaming_asr-sherpa-onnx-x-asr-960ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-linux-x64.zip
macOS flutter-streaming_asr-sherpa-onnx-x-asr-960ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-macos.zip
Windows (x64) flutter-streaming_asr-sherpa-onnx-x-asr-960ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-win-x64.zip

Nemotron 3.5 ASR Streaming 560ms (multilingual)

ASR model: sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-560ms-int8-2026-06-11 — download

Platform File
Android (arm64-v8a) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-560ms-int8-2026-06-11-arm64-v8a.apk
Android (armeabi-v7a) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-560ms-int8-2026-06-11-armeabi-v7a.apk
Android (x86_64) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-560ms-int8-2026-06-11-x86_64.apk
Linux (x64) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-560ms-int8-2026-06-11-linux-x64.zip
macOS flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-560ms-int8-2026-06-11-macos.zip
Windows (x64) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-560ms-int8-2026-06-11-win-x64.zip

X-ASR 480ms (Chinese/English, with punctuation)

ASR model: sherpa-onnx-x-asr-480ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05 — download

Platform File
Android (arm64-v8a) flutter-streaming_asr-sherpa-onnx-x-asr-480ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-arm64-v8a.apk
Android (armeabi-v7a) flutter-streaming_asr-sherpa-onnx-x-asr-480ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-armeabi-v7a.apk
Android (x86_64) flutter-streaming_asr-sherpa-onnx-x-asr-480ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-x86_64.apk
Linux (x64) flutter-streaming_asr-sherpa-onnx-x-asr-480ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-linux-x64.zip
macOS flutter-streaming_asr-sherpa-onnx-x-asr-480ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-macos.zip
Windows (x64) flutter-streaming_asr-sherpa-onnx-x-asr-480ms-streaming-zipformer-transducer-zh-en-punct-int8-2026-06-05-win-x64.zip

Nemotron 3.5 ASR Streaming 1120ms (multilingual)

ASR model: sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-1120ms-int8-2026-06-11 — download

Platform File
Android (arm64-v8a) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-1120ms-int8-2026-06-11-arm64-v8a.apk
Android (armeabi-v7a) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-1120ms-int8-2026-06-11-armeabi-v7a.apk
Android (x86_64) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-1120ms-int8-2026-06-11-x86_64.apk
Linux (x64) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-1120ms-int8-2026-06-11-linux-x64.zip
macOS flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-1120ms-int8-2026-06-11-macos.zip
Windows (x64) flutter-streaming_asr-sherpa-onnx-nemotron-3.5-asr-streaming-0.6b-1120ms-int8-2026-06-11-win-x64.zip

Text to speech #

VITS Piper en_US-amy-low (English)

TTS model: vits-piper-en_US-amy-low — download

Platform File
Android (arm64-v8a) flutter-tts-vits-piper-en_US-amy-low-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-vits-piper-en_US-amy-low-armeabi-v7a.apk
Android (x86_64) flutter-tts-vits-piper-en_US-amy-low-x86_64.apk
Linux (x64) flutter-tts-vits-piper-en_US-amy-low-linux-x64.zip
macOS flutter-tts-vits-piper-en_US-amy-low-macos.zip
Windows (x64) flutter-tts-vits-piper-en_US-amy-low-win-x64.zip
Web flutter-tts-vits-piper-en_US-amy-low-web.zip

VITS Piper zh_CN-xiao_ya-medium (Chinese)

TTS model: vits-piper-zh_CN-xiao_ya-medium — download

Platform File
Android (arm64-v8a) flutter-tts-vits-piper-zh_CN-xiao_ya-medium-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-vits-piper-zh_CN-xiao_ya-medium-armeabi-v7a.apk
Android (x86_64) flutter-tts-vits-piper-zh_CN-xiao_ya-medium-x86_64.apk
Linux (x64) flutter-tts-vits-piper-zh_CN-xiao_ya-medium-linux-x64.zip
macOS flutter-tts-vits-piper-zh_CN-xiao_ya-medium-macos.zip
Windows (x64) flutter-tts-vits-piper-zh_CN-xiao_ya-medium-win-x64.zip
Web flutter-tts-vits-piper-zh_CN-xiao_ya-medium-web.zip

VITS Piper en_US-libritts_r-medium (English)

TTS model: vits-piper-en_US-libritts_r-medium — download

Platform File
Android (arm64-v8a) flutter-tts-vits-piper-en_US-libritts_r-medium-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-vits-piper-en_US-libritts_r-medium-armeabi-v7a.apk
Android (x86_64) flutter-tts-vits-piper-en_US-libritts_r-medium-x86_64.apk
Linux (x64) flutter-tts-vits-piper-en_US-libritts_r-medium-linux-x64.zip
macOS flutter-tts-vits-piper-en_US-libritts_r-medium-macos.zip
Windows (x64) flutter-tts-vits-piper-en_US-libritts_r-medium-win-x64.zip
Web flutter-tts-vits-piper-en_US-libritts_r-medium-web.zip

VITS Inflect en-nano-v2 (English)

TTS model: vits-inflect-en-nano-v2 — download

Platform File
Android (arm64-v8a) flutter-tts-vits-inflect-en-nano-v2-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-vits-inflect-en-nano-v2-armeabi-v7a.apk
Android (x86_64) flutter-tts-vits-inflect-en-nano-v2-x86_64.apk
Linux (x64) flutter-tts-vits-inflect-en-nano-v2-linux-x64.zip
macOS flutter-tts-vits-inflect-en-nano-v2-macos.zip
Windows (x64) flutter-tts-vits-inflect-en-nano-v2-win-x64.zip
Web flutter-tts-vits-inflect-en-nano-v2-web.zip

Kokoro v0.19 (English)

TTS model: kokoro-int8-en-v0_19 — download

Platform File
Android (arm64-v8a) flutter-tts-kokoro-int8-en-v0_19-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-kokoro-int8-en-v0_19-armeabi-v7a.apk
Android (x86_64) flutter-tts-kokoro-int8-en-v0_19-x86_64.apk
Linux (x64) flutter-tts-kokoro-int8-en-v0_19-linux-x64.zip
macOS flutter-tts-kokoro-int8-en-v0_19-macos.zip
Windows (x64) flutter-tts-kokoro-int8-en-v0_19-win-x64.zip
Web flutter-tts-kokoro-int8-en-v0_19-web.zip

Kokoro v1.0 (Chinese/English)

TTS model: kokoro-multi-lang-v1_0 — download

Platform File
Android (arm64-v8a) flutter-tts-kokoro-multi-lang-v1_0-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-kokoro-multi-lang-v1_0-armeabi-v7a.apk
Android (x86_64) flutter-tts-kokoro-multi-lang-v1_0-x86_64.apk
Linux (x64) flutter-tts-kokoro-multi-lang-v1_0-linux-x64.zip
macOS flutter-tts-kokoro-multi-lang-v1_0-macos.zip
Windows (x64) flutter-tts-kokoro-multi-lang-v1_0-win-x64.zip
Web flutter-tts-kokoro-multi-lang-v1_0-web.zip

Matcha en_US-ljspeech (English)

TTS model: matcha-icefall-en_US-ljspeech — download

Platform File
Android (arm64-v8a) flutter-tts-matcha-icefall-en_US-ljspeech-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-matcha-icefall-en_US-ljspeech-armeabi-v7a.apk
Android (x86_64) flutter-tts-matcha-icefall-en_US-ljspeech-x86_64.apk
Linux (x64) flutter-tts-matcha-icefall-en_US-ljspeech-linux-x64.zip
macOS flutter-tts-matcha-icefall-en_US-ljspeech-macos.zip
Windows (x64) flutter-tts-matcha-icefall-en_US-ljspeech-win-x64.zip
Web flutter-tts-matcha-icefall-en_US-ljspeech-web.zip

Matcha zh-en (Chinese/English)

TTS model: matcha-icefall-zh-en — download

Platform File
Android (arm64-v8a) flutter-tts-matcha-icefall-zh-en-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-matcha-icefall-zh-en-armeabi-v7a.apk
Android (x86_64) flutter-tts-matcha-icefall-zh-en-x86_64.apk
Linux (x64) flutter-tts-matcha-icefall-zh-en-linux-x64.zip
macOS flutter-tts-matcha-icefall-zh-en-macos.zip
Windows (x64) flutter-tts-matcha-icefall-zh-en-win-x64.zip
Web flutter-tts-matcha-icefall-zh-en-web.zip

Kitten Nano v0.1 (English)

TTS model: kitten-nano-en-v0_1-fp16 — download

Platform File
Android (arm64-v8a) flutter-tts-kitten-nano-en-v0_1-fp16-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-kitten-nano-en-v0_1-fp16-armeabi-v7a.apk
Android (x86_64) flutter-tts-kitten-nano-en-v0_1-fp16-x86_64.apk
Linux (x64) flutter-tts-kitten-nano-en-v0_1-fp16-linux-x64.zip
macOS flutter-tts-kitten-nano-en-v0_1-fp16-macos.zip
Windows (x64) flutter-tts-kitten-nano-en-v0_1-fp16-win-x64.zip
Web flutter-tts-kitten-nano-en-v0_1-fp16-web.zip

PocketTTS (multilingual)

TTS model: sherpa-onnx-pocket-tts-int8-2026-01-26 — download

Platform File
Android (arm64-v8a) flutter-tts-sherpa-onnx-pocket-tts-int8-2026-01-26-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-sherpa-onnx-pocket-tts-int8-2026-01-26-armeabi-v7a.apk
Android (x86_64) flutter-tts-sherpa-onnx-pocket-tts-int8-2026-01-26-x86_64.apk
Linux (x64) flutter-tts-sherpa-onnx-pocket-tts-int8-2026-01-26-linux-x64.zip
macOS flutter-tts-sherpa-onnx-pocket-tts-int8-2026-01-26-macos.zip
Windows (x64) flutter-tts-sherpa-onnx-pocket-tts-int8-2026-01-26-win-x64.zip
Web flutter-tts-sherpa-onnx-pocket-tts-int8-2026-01-26-web.zip

Supertonic 3 (multilingual)

TTS model: sherpa-onnx-supertonic-3-tts-int8-2026-05-11 — download

Platform File
Android (arm64-v8a) flutter-tts-sherpa-onnx-supertonic-3-tts-int8-2026-05-11-arm64-v8a.apk
Android (armeabi-v7a) flutter-tts-sherpa-onnx-supertonic-3-tts-int8-2026-05-11-armeabi-v7a.apk
Android (x86_64) flutter-tts-sherpa-onnx-supertonic-3-tts-int8-2026-05-11-x86_64.apk
Linux (x64) flutter-tts-sherpa-onnx-supertonic-3-tts-int8-2026-05-11-linux-x64.zip
macOS flutter-tts-sherpa-onnx-supertonic-3-tts-int8-2026-05-11-macos.zip
Windows (x64) flutter-tts-sherpa-onnx-supertonic-3-tts-int8-2026-05-11-win-x64.zip
Web flutter-tts-sherpa-onnx-supertonic-3-tts-int8-2026-05-11-web.zip

Offline punctuation restoration #

Platform File
Android (arm64-v8a) flutter-offline-punctuation-arm64-v8a.apk
Android (armeabi-v7a) flutter-offline-punctuation-armeabi-v7a.apk
Android (x86_64) flutter-offline-punctuation-x86_64.apk
Linux (x64) flutter-offline-punctuation-linux-x64.zip
macOS flutter-offline-punctuation-macos.zip
Windows (x64) flutter-offline-punctuation-win-x64.zip
Web flutter-offline-punctuation-web.zip

Online punctuation restoration #

Platform File
Android (arm64-v8a) flutter-online-punctuation-arm64-v8a.apk
Android (armeabi-v7a) flutter-online-punctuation-armeabi-v7a.apk
Android (x86_64) flutter-online-punctuation-x86_64.apk
Linux (x64) flutter-online-punctuation-linux-x64.zip
macOS flutter-online-punctuation-macos.zip
Windows (x64) flutter-online-punctuation-win-x64.zip
Web flutter-online-punctuation-web.zip

Web demos #

Try the following demos directly in your browser:

Demo URL
VAD from file https://modelscope.cn/studios/csukuangfj/wasm-vad-from-file
VAD from microphone https://modelscope.cn/studios/csukuangfj/wasm-vad-from-microphone
Offline punctuation restoration https://modelscope.cn/studios/csukuangfj/wasm-offline-punctuation
Online punctuation restoration https://modelscope.cn/studios/csukuangfj/wasm-online-punctuation

Flutter source code #

Functions URL Supported Platforms
Hello world (version info) Address Android, iOS, Linux, macOS, Windows, Web
Streaming speech recognition Address Android, iOS, Linux, macOS, Windows
Non-streaming VAD + speech recognition Address Android, iOS, Linux, macOS, Windows
Text to speech Address Android, iOS, Linux, macOS, Windows, Web
VAD from file Address Android, iOS, Linux, macOS, Windows, Web
VAD + ASR from file Address Android, iOS, Linux, macOS, Windows, Web
VAD + ASR from microphone Address Android, iOS, Linux, macOS, Windows, Web
VAD from microphone Address Android, iOS, Linux, macOS, Windows, Web
Offline punctuation restoration Address Android, iOS, Linux, macOS, Windows, Web
Online punctuation restoration Address Android, iOS, Linux, macOS, Windows, Web

Pure dart-examples #

Hint: All of the following functions can be used in Flutter, even if some of them are only provided in pure dart api examples.

Functions URL Supported Platforms
Streaming speech recognition Address macOS, Windows, Linux
Non-Streaming speech recognition Address macOS, Windows, Linux
Text to speech Address macOS, Windows, Linux
Voice activity detection (VAD) Address macOS, Windows, Linux
VAD with non-streaming speech recognition Address macOS, Windows, Linux
Speaker identification and verification Address macOS, Windows, Linux
Speaker diarization Address macOS, Windows, Linux
Audio tagging Address macOS, Windows, Linux
Keyword spotter Address macOS, Windows, Linux
Spoken language identification Address macOS, Windows, Linux
Add punctuations Address macOS, Windows, Linux
Speech enhancement (GTCRN) Address macOS, Windows, Linux
Speech enhancement (DPDFNet) Address macOS, Windows, Linux
Streaming speech enhancement (GTCRN) Address macOS, Windows, Linux
Streaming speech enhancement (DPDFNet) Address macOS, Windows, Linux

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Metadata

Speech recognition, speech synthesis, and speaker recognition using next-gen Kaldi with onnxruntime without Internet connection.

Homepage
Repository (GitHub)
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Topics

#speech-recognition #speech-synthesis #speaker-identification #audio-tagging #voice-activity-detection

License

Apache-2.0 (license)

Dependencies

ffi, sherpa_onnx_android_arm64, sherpa_onnx_android_armeabi, sherpa_onnx_android_x86, sherpa_onnx_android_x86_64, sherpa_onnx_ios, sherpa_onnx_linux, sherpa_onnx_macos, sherpa_onnx_web, sherpa_onnx_windows

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