图生图（chat格式）

curl --location --request POST '/v1/chat/completions' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer {{YOUR_API_KEY}}' \
--header 'Content-Type: application/json' \
--data-raw '{
  "messages": [
    {
      "content": [
        {
          "text": "三维画面描...",
          "type": "text"
        },
        {
          "image_url": {
            "url": "https://cdn.jeff1992.com/ai-video/2026/01/31/ywqw20_1769851372098.png"
          },
          "type": "image_url"
        },
        {
          "image_url": {
            "url": "https://cdn.jeff1992.com/ai-video/2026/02/02/lhngiq_1770012363944.png"
          },
          "type": "image_url"
        },
        {
          "image_url": {
            "url": "https://cdn.jeff1992.com/ai-video/2026/02/02/46brgz_1770009618620.png"
          },
          "type": "image_url"
        }
      ],
      "role": "user"
    }
  ],
  "model": "gemini-3-pro-image-preview"
}'