API reference · Topaz Labs

topaz/upscale/image/generative

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 IDtopaz/upscale/image/generative

Input Schema

17 parameters · 2 required · 15 optional

Parameter	Type	Required	Description
`image`	string	Required	Url of the image to be upscaled · Min length: 1
`prompt`	string	Required	Text prompt to guide generative upscaling (max 1024 chars). Applies to Redefine model only. · Max length: 1024
`model`	string	Optional	Generative upscaling model. Wonder 3.5 is the latest Wonder with finer detail and fewer repetitive patterns; Wonder 3 is Topaz's most advanced generative realism model (Wonder 2/Wonder are earlier generations); Recover 3 rebuilds natural detail; Standard MAX is high-quality precision-leaning upscaling; Redefine adds prompt-guided creative detail; Recovery and Recovery V2 rebuild extreme low-resolution images. · Options: Wonder 3.5, Wonder 3, Wonder 2, Wonder, Recover 3, Standard MAX, Redefine, Recovery V2, Recovery · Default: "Wonder 3" Wonder 3.5Wonder 3Wonder 2WonderRecover 3Standard MAXRedefineRecovery V2Recovery
`detail`	number	Optional	Detail recovery level (0.0-1.0). Applies to Recovery V2 model only. · Min: 0 · Max: 1
`denoise`	number	Optional	Denoising level (0.0-1.0). Applies to Redefine model only. · Min: 0 · Max: 1
`sharpen`	number	Optional	Sharpening level (0.0-1.0). Applies to Redefine model only. · Min: 0 · Max: 1
`texture`	integer	Optional	Texture detail level for generative upscaling (1-5). Applies to Redefine model only. · Min: 1 · Max: 5
`autoprompt`	boolean	Optional	Enable automatic prompt generation for generative upscaling. Applies to Redefine model only.
`creativity`	integer	Optional	Creativity level for generative upscaling (1-6). Higher values produce more creative/hallucinated details. Applies to Redefine model only. · Min: 1 · Max: 6
`crop_to_fill`	boolean	Optional	Default: false
`output_format`	string	Optional	Output format of the upscaled image. · Options: jpeg, png · Default: "jpeg" jpegpng
`upscale_factor`	number	Optional	Factor to upscale the image by (e.g. 2.0 doubles width and height) · Min: 1 · Max: 4 · Default: 2
`face_enhancement`	boolean	Optional	Whether to apply face enhancement to the image. · Default: true
`subject_detection`	string	Optional	Subject detection mode for the image enhancement. Applies to Wonder 3, Recovery and Recovery V2 models. · Options: All, Foreground, Background · Default: "All" AllForegroundBackground
`enhancement_strength`	string	Optional	Enhancement strength for generative upscaling. Applies to Wonder 3 and Wonder 3.5 models. When omitted, Topaz auto-configures it. · Options: low, medium, high lowmediumhigh
`face_enhancement_strength`	number	Optional	Strength of the face enhancement. 0.0 means no enhancement, 1.0 means maximum enhancement. Ignored if face enhancement is disabled. · Min: 0 · Max: 1 · Default: 0.8
`face_enhancement_creativity`	number	Optional	Creativity level for face enhancement. 0.0 means no creativity, 1.0 means maximum creativity. Ignored if face enhancement is disabled. · Min: 0 · Max: 1 · Default: 0

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": "Wonder 3",
  "image": "https://static.sandbase.ai/examples/topaz/upscale/image/generative/input_image_0.jpeg",
  "crop_to_fill": false,
  "output_format": "jpeg",
  "upscale_factor": 2,
  "face_enhancement": true,
  "subject_detection": "All",
  "face_enhancement_strength": 0.8,
  "face_enhancement_creativity": 0,
  "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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