curl --request POST \
  --url https://api.opper.ai/v3/audio/transcriptions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "audio": "<string>",
  "model": "<string>"
}
'

{
  "created": 123,
  "id": "<string>",
  "model": "<string>",
  "text": "<string>",
  "usage": {
    "cost": 123,
    "seconds": 123
  },
  "duration": 123,
  "language": "<string>",
  "segments": [
    {
      "end": 123,
      "start": 123,
      "text": "<string>",
      "speaker": "<string>"
    }
  ],
  "words": [
    {
      "end": 123,
      "start": 123,
      "word": "<string>"
    }
  ]
}