curl --request POST \
  --url 'https://api.elkapi.com/v1/completions' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "gpt-5.5",
  "prompt": "日差しのある庭を走る小さな子猫、映画的、高精細",
  "max_tokens": 1024,
  "temperature": 1,
  "stream": false
}'

{
  "id": "id",
  "object": "text_completion",
  "created": 1,
  "model": "gpt-5.5",
  "choices": [
    {
      "text": "こんにちは、自己紹介してください",
      "index": 1,
      "finish_reason": "finish_reason"
    }
  ],
  "usage": {
    "prompt_tokens": 1,
    "completion_tokens": 1,
    "total_tokens": 1,
    "prompt_tokens_details": {
      "cached_tokens": 1,
      "text_tokens": 1,
      "audio_tokens": 1,
      "image_tokens": 1
    },
    "completion_tokens_details": {
      "text_tokens": 1,
      "audio_tokens": 1,
      "reasoning_tokens": 1
    }
  }
}