Stability AI: Stability AI Upscale Fast

Stability Upscale Fast provides a straightforward image-enlargement step without a text prompt. It fits routine asset preparation when the main requirement is a larger version of the existing picture.

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stability-upscale-fast

AvailableStability AIImageSync

Price: From $0.02
Modalities: Image

About Stability AI Upscale Fast

Upscale Fast is the quick enlargement option among Stability AI's upscaling services. It takes an image with no text prompt and returns a larger version. It is intended for routine asset preparation, where the main need is a bigger copy of an existing picture. If you want prompt-guided enhancement that stays faithful to the source, use the Conservative upscaler.

Where it works well

No prompt is needed, so it slots into automated pipelines with nothing to write per image.
Built for plain enlargement, which keeps the step simple for bulk asset work.
It leaves creative decisions out; the output is the same picture, bigger.

When to choose another model

It offers no prompt to guide added detail, so fine texture is up to the model.
Heavily compressed or tiny inputs will not become detailed; the Creative or Conservative upscalers handle these better.

Getting started

Create API key
Create a key in Console, then use it with every model on the platform.

Send your first request

Copy the example for your language and run it against the endpoint.

Image editingTokenLab endpoint

POST/v1/images/edits

curl -X POST "https://api.tokenlab.sh/v1/images/edits" \
  -H "Authorization: Bearer sk-xxx" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "stability-upscale-fast",
  "prompt": "A minimalist product photo of matte black headphones on a soft blue background.",
  "image_url": "https://example.com/source.png"
}'

Parameters

Image editing

Parameter	Values and limits	Default	Notes
`image`	Inputs: ≥ 1, ≤ 1	Not provided	One source image. Mask input, where declared, applies to this source image.

Official Stability fast upscaler contract.

Pricing

The Verified price applies to Verified, which costs less on most models. The Official price is the model maker's published price and applies to the more reliable Official route. Auto bills the route that completes the request.

Image editing

per image

Official price: $0.02
Verified price: —
Discount: —

	Official priceper image	Verified priceper image	Discount
Image editing	$0.02	—	—

Usage & activity

Success rate is the share of requests that completed. Latency is how long a full response takes; P95 means 95% of requests finished within that time.

Usage & availability

Last 24 hours

Requests
Success rate
P95 latency
Total tokens

Model performance

Last updated Nov 1, 2026, 6:32 AM UTC

Metrics appear once privacy and data volume thresholds are met.

Data is based on aggregate user requests, excluding status checks.

Open in Console

Open Stability AI Upscale Fast in Console with a prompt ready to edit or send.

Help me create an image with stability-upscale-fast using image-edit at /v1/images/edits. Show the result, cost, and any limits I should know.

Use cases

Thumbnail to display size
Enlarge small thumbnails so they can be used in cards or banners without opening an editor.
Bulk asset pipelines
Run a folder of user uploads through one enlargement step before storage.
Social and web graphics
Bring generated images up to the larger size a web layout, banner, or social post needs without opening an editor or writing a prompt.
Quick previews
Check how a low-resolution source would look at a larger size before choosing a slower enhancement option.

Prompt examples

(No prompt is used; send the image only.) Enlarge this product thumbnail.

Upscale the attached 512-pixel avatar for a profile banner.

Enlarge this generated illustration for a web hero section.

FAQ

What does Stability Upscale Fast do?

It enlarges an image quickly and without a text prompt. It is a straightforward resolution step for everyday assets, meant for cases where you need a bigger copy of the existing picture rather than a reinterpretation of it.

Does it need a prompt?

No. The catalog description says it works without a text prompt. Send the image and receive a larger version, which makes it easy to add to a script or a bulk pipeline that processes many files.

Which upscaler keeps the content most faithful?

Conservative, which accepts a prompt and is designed to retain source content with modest enhancement. Fast is simpler and cheaper to wire in, not more careful.

Can it fix a blurry photo?

Do not count on it. Enlargement adds pixels, not new information, so a blurry or heavily compressed photo stays soft at a larger size. Retake the source, or try a creative upscaler if some reinterpretation is acceptable.

Is Upscale Fast a generator?

No. It is image in, image out, and creates nothing new from text. If you need new pictures from a description, use a text-to-image model such as Stable Image Core and pass the result here to enlarge it.

How much does Stability AI Upscale Fast cost?

On TokenLab, Stability AI Upscale Fast costs $0.02 per image. The pricing table above shows the full breakdown. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.

Which endpoint should Stability AI Upscale Fast use?

Use https://api.tokenlab.sh/v1/images/edits for Stability AI Upscale Fast. The request example below shows the matching code shape.

Which operations does Stability AI Upscale Fast support?

Stability AI Upscale Fast supports Image editing. Select an operation above to see its endpoint and request example.