API reference · Bytedance

bytedance/seedvr/upscale/image/seamless

Integrate this model through SandBase's unified API, with production-ready schemas and examples.

IMAGEAsyncOpen model

Production endpoint

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OpenAI-compatible endpoint with unified authentication and usage tracking.

POSThttps://api.sandbase.ai/v1/run

Model IDbytedance/seedvr/upscale/image/seamless

Input Schema

7 parameters · 1 required · 6 optional

Parameter	Type	Required	Description
`image`	string	Required	The input image to be processed
`seed`	integer	Optional	The random seed used for the generation process.
`noise_scale`	number	Optional	The noise scale to use for the generation process. · Min: 0 · Max: 1 · Default: 0.1
`upscale_mode`	string	Optional	The mode to use for the upscale. If 'target', the upscale factor will be calculated based on the target resolution. If 'factor', the upscale factor will be used directly. · Options: target, factor · Default: "factor" targetfactor
`output_format`	string	Optional	The format of the output image. · Options: png, jpeg · Default: "png" pngjpeg
`upscale_factor`	number	Optional	Upscaling factor to be used. Will multiply the dimensions with this factor when `upscale_mode` is `factor`. · Min: 1 · Max: 10 · Default: 2
`target_resolution`	string	Optional	The target resolution to upscale to when `upscale_mode` is `target`. · Options: 720p, 1080p, 1440p, 2160p · Default: "1080p" 720p1080p1440p2160p

Output Schema

Field	Type	Description
`id`	string	Unique identifier for the generation task
`status`	string	Task status: pending, running, completed, failed, timeout
`model`	string	Model used for the generation
`outputs`	array	Array of output items
`outputs[].url`	string	URL of the generated artifact
`outputs[].content_type`	string	MIME type (e.g. image/png, video/mp4)
`error`	object \| null	Error details if failed, null on success
`error.type`	string	Machine-readable error type code
`error.message`	string	Human-readable error description

Async Workflow

This model uses asynchronous execution. Submit a request and poll for the result.

Submit — POST to /v1/run, receive an id
Poll — GET /v1/run/{id} until status is completed, failed, or timeout
Retrieve — Read outputs from the completed response

Code Examples

Ready-to-run snippets

# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
  "model": "bytedance/seedvr/upscale/image/seamless",
  "image": "https://static.sandbase.ai/examples/bytedance/seedvr/upscale/image/seamless/input_image_0.png",
  "noise_scale": 0.1,
  "upscale_mode": "factor",
  "output_format": "png",
  "upscale_factor": 2,
  "target_resolution": "1080p",
  "prompt": "a beautiful sunset over mountains"
}'

# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
  -H "Authorization: Bearer YOUR_API_KEY"

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