{
 "benchmark": "Round 2: Parakeet TDT (FluidAudio CoreML int8) + MOSS-Transcribe-Diarize vs Round 1 engines",
 "datePublished": "2026-07-15",
 "corpus": "LibriSpeech test-clean (2620) + test-other (2939), 16kHz mono",
 "scoring": "corpus WER = total errors / total reference words; identical normalizer+scorer as Round 1 (mirrors OpenAI English normalizer)",
 "mossProtocol": "1s leading silence prepended to every clip (MOSS emits empty output when speech starts at t=0); retry ladder 0.5s/2s/0s, needed by 7 of 5559 clips",
 "versions": {
  "FluidAudio": "19600a485baa (parakeet-tdt-0.6b-v2/v3-coreml, int8 encoder)",
  "mlx-audio": "0.4.5",
  "MOSS": "OpenMOSS-Team/MOSS-Transcribe-Diarize"
 },
 "results": [
  {
   "engine": "Parakeet v2 (int8)",
   "split": "test-clean",
   "utterances": 2620,
   "werPercent": 2.01,
   "device": "Apple M2 Pro, 32GB RAM, macOS Version 26.5.1 (Build 25F80)"
  },
  {
   "engine": "Parakeet v2 (int8)",
   "split": "test-other",
   "utterances": 2939,
   "werPercent": 3.4,
   "device": "Apple M2 Pro, 32GB RAM, macOS Version 26.5.1 (Build 25F80)"
  },
  {
   "engine": "Parakeet v3 (int8)",
   "split": "test-clean",
   "utterances": 2620,
   "werPercent": 2.51,
   "device": "Apple M2 Pro, 32GB RAM, macOS Version 26.5.1 (Build 25F80)"
  },
  {
   "engine": "Parakeet v3 (int8)",
   "split": "test-other",
   "utterances": 2939,
   "werPercent": 4.28,
   "device": "Apple M2 Pro, 32GB RAM, macOS Version 26.5.1 (Build 25F80)"
  },
  {
   "engine": "MOSS-Transcribe-Diarize (mlx-audio 0.4.5)",
   "split": "test-clean",
   "utterances": 2620,
   "werPercent": 2.07,
   "device": "Apple M2 Pro, 32GB RAM, macOS 26.5.1"
  },
  {
   "engine": "MOSS-Transcribe-Diarize (mlx-audio 0.4.5)",
   "split": "test-other",
   "utterances": 2939,
   "werPercent": 4.68,
   "device": "Apple M2 Pro, 32GB RAM, macOS 26.5.1"
  }
 ],
 "round1": "https://get-inscribe.com/data/speech-benchmark/summary.json"
}