What is Stable Diffusion API?

Stable Diffusion API is a REST API for generating images using Stable Diffusion and 1,000+ community models. It handles the GPU infrastructure so you can focus on building.

Is Stable Diffusion API free?

Yes — the free tier includes 20 image generations. Paid plans start at $8/month with unlimited access to all public models. Pricing is on modelslab.com.

How do I get a Stable Diffusion API key?

Sign up at modelslab.com (Stable Diffusion API is part of ModelsLab). Your API key is in the dashboard under API Settings.

Can I use Stable Diffusion API commercially?

Yes — you retain full copyright on images you generate via the API and can use them commercially.

What models can I use?

Stable Diffusion 1.5, SDXL, Flux, ControlNet, LoRA fine-tunes, anime/photorealistic specialty models, and 1,000+ community uploads. You can also upload your own.

Now part of ModelsLab

Stable Diffusion API

The REST API for Stable Diffusion image generation

One endpoint for Stable Diffusion 1.5, SDXL, Flux, ControlNet, LoRA, and 1,000+ community models. Plug-and-play API, free tier, transparent pricing — no GPU, no setup.

Get API key — Free tier Read the docs

800M+

Images generated

100K+

Developers

1,490+

Models available

From zero to first image in 30 seconds

Send a POST request with your API key and prompt. Free tier — no credit card.

curl -X POST 'https://stablediffusionapi.com/api/v4/dreambooth' \
  -H 'Content-Type: application/json' \
  -d '{
  "key": "YOUR_API_KEY",
  "model_id": "sd-1.5",
  "prompt": "a photo of an astronaut riding a horse on mars",
  "negative_prompt": null,
  "width": "512",
  "height": "512",
  "samples": "1",
  "num_inference_steps": "30",
  "guidance_scale": 7.5,
  "safety_checker": "no",
  "enhance_prompt": "yes",
  "seed": null,
  "webhook": null,
  "track_id": null
}'

import requests, json

url = "https://stablediffusionapi.com/api/v4/dreambooth"
payload = json.dumps({
  "key": "YOUR_API_KEY",
  "model_id": "sd-1.5",
  "prompt": "a photo of an astronaut riding a horse on mars",
  "negative_prompt": null,
  "width": "512",
  "height": "512",
  "samples": "1",
  "num_inference_steps": "30",
  "guidance_scale": 7.5,
  "safety_checker": "no",
  "enhance_prompt": "yes",
  "seed": null,
  "webhook": null,
  "track_id": null
})
headers = {'Content-Type': 'application/json'}
response = requests.post(url, headers=headers, data=payload)
print(response.text)

const response = await fetch("https://stablediffusionapi.com/api/v4/dreambooth", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
  "key": "YOUR_API_KEY",
  "model_id": "sd-1.5",
  "prompt": "a photo of an astronaut riding a horse on mars",
  "negative_prompt": null,
  "width": "512",
  "height": "512",
  "samples": "1",
  "num_inference_steps": "30",
  "guidance_scale": 7.5,
  "safety_checker": "no",
  "enhance_prompt": "yes",
  "seed": null,
  "webhook": null,
  "track_id": null
})
});
const data = await response.json();
console.log(data);

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Common questions

What is Stable Diffusion API?: Stable Diffusion API is a REST API for generating images using Stable Diffusion and 1,000+ community models. It handles the GPU infrastructure so you can focus on building.
Is Stable Diffusion API free?: Yes — the free tier includes 20 image generations. Paid plans start at $8/month with unlimited access to all public models. Pricing is on modelslab.com.
How do I get a Stable Diffusion API key?: Sign up at modelslab.com (Stable Diffusion API is part of ModelsLab). Your API key is in the dashboard under API Settings.
Can I use Stable Diffusion API commercially?: Yes — you retain full copyright on images you generate via the API and can use them commercially.
What models can I use?: Stable Diffusion 1.5, SDXL, Flux, ControlNet, LoRA fine-tunes, anime/photorealistic specialty models, and 1,000+ community uploads. You can also upload your own.

Ready to build?

Free tier includes 20 image generations. No credit card required.

Get your API key →