{
  "status": "succeeded",
  "file": "hello.mp3",
  "bytes": 40173,
  "sha256": "534d15201ac35c056f3dc57efc3867504e3a8e9ffe86ab8fd72b85fd38f0c754",
  "chargedUSD": "0.000440",
  "trialCharacters": 0,
  "billableCharacters": 55,
  "language": "en",
  "region": "cn",
  "completedAt": "2026-09-15T03:52:41.808Z",
  "text": "Hello. CastReader turns your ideas into playable audio.",
  "durationSeconds": 5.016,
  "voice": "Rowan",
  "validation": [
    "ffprobe metadata",
    "complete ffmpeg decoding",
    "local SHA-256 reuse"
  ],
  "limitations": "First-party single sample; no pronunciation-quality or latency benchmark."
}