使用文档：API 接入

公开生图模型，适合常规文生图和参考图生成。当前平台标准渠道按张计费。

Seedream 5.0 Lite 图片生成

curl https://api.llmgate.shop/v1/images/generations \
  -H "Authorization: Bearer sk-lg-your-key-here" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-5-0-lite",
    "prompt": "A clean product photo of a ceramic coffee cup",
    "size": "3K",
    "image": "https://example.com/reference.png",
    "n": 1,
    "response_format": "url"
  }'

公开生图模型，适合高质量文生图和参考图生成。当前平台标准渠道按张计费。

Seedream 4.5 图片生成

curl https://api.llmgate.shop/v1/images/generations \
  -H "Authorization: Bearer sk-lg-your-key-here" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedream-4-5",
    "prompt": "A clean product photo of a ceramic coffee cup",
    "size": "4K",
    "image": "https://example.com/reference.png",
    "n": 1,
    "response_format": "url"
  }'

公开生视频模型，支持文生视频、图生视频和多模态参考素材。长耗时任务建议走异步接口。

Seedance 2.0 视频生成

curl https://api.llmgate.shop/v1/videos/generations \
  -H "Authorization: Bearer sk-lg-your-key-here" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedance-2-0",
    "content": [
      {"type": "text", "text": "A short cinematic shot of a coffee cup on a wooden desk"},
      {"type": "image_url", "image_url": {"url": "https://example.com/reference.png"}, "role": "reference_image"}
    ],
    "duration": 5,
    "ratio": "16:9",
    "resolution": "1080p",
    "generate_audio": true,
    "watermark": false
  }'

curl https://api.llmgate.shop/v1/videos/generations \
  -H "Authorization: Bearer sk-lg-your-key-here" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedance-2-0",
    "content": [
      {"type": "text", "text": "Make a smooth cinematic transition from the first image to the second image"},
      {"type": "image_url", "role": "first_frame", "image_url": {"url": "https://example.com/first-frame.png"}},
      {"type": "image_url", "role": "last_frame", "image_url": {"url": "https://example.com/last-frame.png"}}
    ],
    "duration": 5,
    "ratio": "16:9",
    "resolution": "1080p",
    "generate_audio": false,
    "watermark": false,
    "return_last_frame": true
  }'

公开生视频模型，优先速度。请求体和 Seedance 2.0 保持同一套官方内容数组写法。

Seedance 2.0 Fast 视频生成

curl https://api.llmgate.shop/v1/videos/generations \
  -H "Authorization: Bearer sk-lg-your-key-here" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedance-2-0-fast",
    "content": [
      {"type": "text", "text": "A short cinematic shot of a coffee cup on a wooden desk"},
      {"type": "image_url", "image_url": {"url": "https://example.com/reference.png"}, "role": "reference_image"}
    ],
    "duration": 5,
    "ratio": "16:9",
    "resolution": "720p",
    "generate_audio": true,
    "watermark": false
  }'

curl https://api.llmgate.shop/v1/videos/generations \
  -H "Authorization: Bearer sk-lg-your-key-here" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "doubao-seedance-2-0-fast",
    "content": [
      {"type": "text", "text": "Make a smooth cinematic transition from the first image to the second image"},
      {"type": "image_url", "role": "first_frame", "image_url": {"url": "https://example.com/first-frame.png"}},
      {"type": "image_url", "role": "last_frame", "image_url": {"url": "https://example.com/last-frame.png"}}
    ],
    "duration": 5,
    "ratio": "16:9",
    "resolution": "720p",
    "generate_audio": false,
    "watermark": false,
    "return_last_frame": true
  }'