Stable Diffusion 3

Image generationNewAvailable
by Stability AIModel ID: stable-diffusion-3

A text-to-image model with greatly improved performance in image quality, typography, complex prompt understanding, and resource-efficiency

Price
US$0.042/image
Aspect ratios
1:1, 16:9, 21:9, 3:2, 2:3, 4:5, 5:4, 9:16, 9:21
Input โ†’ output
Text โ†’ Image
Developer
Stability AI
Updated
24 September 2026
01

Playground

Try Stable Diffusion 3

Input & output

US$0.042/image
Try Stable Diffusion 3
Advanced settings (1)
Output
Your image appears here.

This run

US$0.042 ยท 4.2 credits

For accounts without a purchase: runs above 2 credits need a top-up.

New here?

10 free credits (US$0.10) when you sign up with Google

Usable 24 hours after sign-up, up to 5 runs per day and at most 2 credits per run. Other sign-in methods start without credits.

02

Examples

Real outputs from the public examples of this model on Replicate, with the prompt and settings that produced them. They were not generated live on this page.
  • Example output 1 from Stable Diffusion 3: a photo of vibrant artistic graffiti on a wall saying "SD3 medium"Open full size

    Prompt

    a photo of vibrant artistic graffiti on a wall saying "SD3 medium"

    Settings

    aspect_ratio
    3:2
  • Example output 2 from Stable Diffusion 3: an epic logo for "STABLE DIFFUSION 3", depicting a space wizard in the style of a nebula background with blue and purple neon text on a whitOpen full size

    Prompt

    an epic logo for "STABLE DIFFUSION 3", depicting a space wizard in the style of a nebula background with blue and purple neon text on a white glowing background floating over a mountain range

    Settings

    negative_prompt: watermark

    aspect_ratio
    3:2
  • Example output 3 from Stable Diffusion 3: a 3D render of a wizard holding a sign saying "SD3"Open full size

    Prompt

    a 3D render of a wizard holding a sign saying "SD3"

    Settings

    aspect_ratio
    1:1
03

About Stable Diffusion 3

TL;DRAs of 24 September 2026

Stable Diffusion 3 is a model by Stability AI in the Image generation category. On Railwail, Stable Diffusion 3 costs US$0.042 per image. Supported aspect ratios: 1:1, 16:9, 21:9, 3:2, 2:3, 4:5, 5:4, 9:16 and 9:21.

04

Pricing

Prices in US dollars. Usage is charged from prepaid credits.
Per imageUS$0.042 per image
  • 1 credit = US$0.01

Cost calculator

Price calculator

Total

US$4.20

420 credits

Per run

US$0.042 ยท 4.2 credits

Fixed price per run, known before the run starts.

05

API

Call Stable Diffusion 3 with your Railwail API key. Use this model ID in the request:
curl https://railwail.com/api/v1/images/generations \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "stable-diffusion-3",
    "prompt": "A lighthouse on a rocky coast at sunset, photorealistic"
  }'
Set your key as RAILWAIL_API_KEYCreate API key
06

Specifications

Model ID
stable-diffusion-3
Developer
Stability AI
Input
Text
Output
Image
Aspect ratios
1:1, 16:9, 21:9, 3:2, 2:3, 4:5, 5:4, 9:16, 9:21
Billing
Fixed price, known before the run
Catalog entry updated
24 September 2026

Input parameters

Inputs and settings from the model's input schema. The example in the API section shows which of them the API accepts.

  • promptrequired
    Type: Text
    Default: โ€“
    Allowed values: โ€“
  • aspectRatio
    Type: Choice
    Default: โ€“
    Allowed values: 1:1, 16:9, 21:9, 3:2, 2:3, 4:5, 5:4, 9:16 or 9:21

Tags

  • replicate
  • stability-ai
  • text-to-image
07

Use cases

08

Frequently asked questions

What is Stable Diffusion 3?

Stable Diffusion 3 is a model by Stability AI in the Image generation category. On Railwail you can call it with an API key through the Railwail API.

How much does Stable Diffusion 3 cost on Railwail?

On Railwail, Stable Diffusion 3 costs US$0.042 per image. The price is known before the run starts. Usage is paid from prepaid credits; 1 credit equals US$0.01.

Which settings does Stable Diffusion 3 support?

According to its input schema, Stable Diffusion 3 knows these parameters: prompt and aspectRatio (1:1, 16:9, 21:9, 3:2, 2:3, 4:5, 5:4, 9:16 or 9:21).

How fast is Stable Diffusion 3?

There are not enough measured runs of Stable Diffusion 3 on Railwail yet to state a run time. It depends on the input, the settings and the load at the provider.

Is Stable Diffusion 3 better than FLUX 1.1 Pro?

That depends on the task. Stable Diffusion 3 (Stability AI) and FLUX 1.1 Pro (Black Forest Labs) are both models in the Image generation category. The comparison page shows their prices and specifications side by side.

Compare Stable Diffusion 3 and FLUX 1.1 Pro

How do I use Stable Diffusion 3 through the API?

Create a Railwail API key and send your request with the model ID stable-diffusion-3. Code examples for curl, Python and JavaScript are in the API section of this page.

09

Comparable models

All in this category

Use Stable Diffusion 3 via the API

One API key for every model on Railwail. Usage is charged from prepaid credits, 1 credit = US$0.01.