curl --request POST \
  --url https://www.anyfast.ai/v1beta/models/gemini-3.1-flash-image-preview-c:generateContent \
  --header 'Content-Type: application/json' \
  --data '
{
  "contents": [
    {
      "role": "user",
      "parts": [
        {
          "text": "Hi, this is a picture of me. Can you add a llama next to me?"
        },
        {
          "inline_data": {
            "mime_type": "image/jpeg",
            "data": "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg=="
          }
        }
      ]
    }
  ],
  "generationConfig": {
    "responseModalities": [
      "TEXT",
      "IMAGE"
    ],
    "imageConfig": {
      "aspectRatio": "9:16",
      "imageSize": "1K"
    }
  }
}
'

{
  "candidates": [
    {
      "content": {
        "role": "model",
        "parts": [
          {
            "text": "Here is the image with a llama added next to you."
          },
          {
            "inline_data": {
              "mime_type": "image/jpeg",
              "data": "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg=="
            }
          }
        ]
      },
      "finishReason": "STOP"
    }
  ],
  "usageMetadata": {
    "promptTokenCount": 10,
    "candidatesTokenCount": 1,
    "totalTokenCount": 11
  }
}