curl --request POST \
  --url 'https://api.elkapi.com/v1/chat/completions' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "gemini-3.1-pro-preview",
  "stream": false,
  "messages": [
    {
      "role": "user",
      "content": "こんにちは、自己紹介してください"
    }
  ],
  "contents": [
    "こんにちは、自己紹介してください"
  ]
}'

{
  "id": "id",
  "model": "gemini-3.1-pro-preview",
  "object": "object",
  "created": 1,
  "choices": [
    {
      "index": 1,
      "message": {
        "role": "user",
        "content": "こんにちは、自己紹介してください"
      },
      "finish_reason": "finish_reason"
    }
  ],
  "usage": {
    "prompt_tokens": 1,
    "completion_tokens": 1,
    "total_tokens": 1
  }
}