stebox/whisperkit-atc-coreml

WhisperKit ATC Models (CoreML)

CoreML-converted Whisper models fine-tuned for Air Traffic Control (ATC) transcription.

Models

Model	Size	Recommended For	WER on ATCO2
small.en-atco2-asr	~500MB	iPhone 12/13	~13.5%

Usage with WhisperKit

import WhisperKit

let config = WhisperKitConfig(
    model: "small.en-atco2-asr",
    modelRepo: "skycaption/whisperkit-atc-coreml"
)
let whisperKit = try await WhisperKit(config)

Performance

These models achieve 84% better Word Error Rate compared to standard Whisper on ATC audio:

• Standard Whisper: ~50% WER on ATC
• ATC Fine-tuned: ~13.5% WER on ATCO2 dataset

Credits

• Original fine-tuning: jlvdoorn/WhisperATC (TU Delft)
• CoreML conversion: argmaxinc/whisperkittools
• App: SkyCaption

License

MIT License