Stable Diffusion API

Stable Diffusion API

Stable Diffusion API is a plug-and-play REST API for programmatic image generation using Stable Diffusion (SD 1.5, SDXL, Flux, ControlNet, LoRA) and thousands of community models, offering a free API key, code samples, and managed GPU infrastructure.

Stable Diffusion API is image & design software teams evaluate for creative & design. Use this page to review pricing, integration signals, and the best alternatives before you commit.

Freemium API Enterprise 80/100
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Added 1 month ago
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Quick Overview

Best for: Creative & Design

What it does

Image & Design software for decision-makers comparing workflow fit and alternatives.

Best fit

Creative & Design

Pricing snapshot

Freemium from Free

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Stable Diffusion API is a hosted REST API that enables developers to generate images using Stable Diffusion models (including SD 1.5, SDXL, Flux, ControlNet, LoRA) and thousands of community models without managing GPU infrastructure. The service advertises a plug-and-play experience with code samples (cURL, Python, Node) and claims rapid onboarding: "From zero to first image in 30 seconds." It is positioned for developers and teams who want programmatic image generation with a free tier and paid plans via ModelsLab.

ModelsLab offers AI API solutions for developers and businesses, simplifying AI integration and innovation.

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Key Features

Multi-model endpoint

One API endpoint supports Stable Diffusion 1.5, SDXL, Flux, ControlNet, LoRA and thousands of community models (2,800+ models referenced).

Managed GPU infrastructure

The API handles GPU infrastructure so users do not need to provision GPUs or manage setup.

Code samples and SDK-ready requests

Official examples shown for curl, Python, and Node demonstrating POST requests and parameters (prompt, guidance_scale, width/height, webhook, etc.).

Model catalog & community uploads

Large catalog of community models (1,000+ or 2,850+ models referenced) and the ability to browse or upload models.

Safety & prompt controls

API parameters include options such as safety_checker and prompt-enhancement settings in example requests.

Pricing

Free Tier Available

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

Free

Free
  • Includes 20 image generations
  • No credit card required

Paid plans

Paid plans start at $8/month
  • Unlimited access to all public models (per site copy)
  • Higher usage beyond free-tier generations

Use Cases

Programmatic image generation

Generate images from prompts programmatically for apps, services, and automation using the REST API.

Model experimentation and community models

Browse and use thousands of community models or upload your own model to experiment with different styles and fine-tunes.

Commercial content creation

Create assets for commercial use — the site states users retain full copyright on generated images and can use them commercially.

Integrations

Models (ControlNet, LoRA, Flux, SDXL, SD 1.5)

Support for model families and community model uploads accessible via the API.

Webhooks

API request examples include a webhook parameter for asynchronous callbacks.

Hugging Face / GitHub (links)

Footer links reference Hugging Face and GitHub, indicating connections or references to community/model hosting and code repositories.

Benefits

No GPU setup or infrastructure management — the API handles GPU provisioning.
Large model catalog including official Stable Diffusion variants and thousands of community models.
Fast onboarding with a free tier and ready-made code samples for quick integration.

Limitations

Free tier is limited to 20 image generations.
Detailed pricing, billing, and enterprise terms are referenced on ModelsLab (pricing details are hosted on modelslab.com).

Frequently Asked 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 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.

Getting Started

  1. 1 Sign up at modelslab.com and obtain your free API key (Stable Diffusion API is now part of ModelsLab).
  2. 2 Read the docs and pick a model (examples include sd-1.5, SDXL, Flux, etc.).
  3. 3 Send a POST request to the API endpoint with your API key and prompt (examples provided for curl, Python, and Node).

Support

docs

Read the docs link available on the site with API references and code samples.

contact

Contact and support links are available via ModelsLab (site references Contact in the footer).

community links

Footer includes links to Twitter, GitHub and Hugging Face for community and code resources.

API

Available: Yes
Documentation:

Documentation and code samples (curl, Python, Node) are provided on the site; examples show POST requests to endpoints such as /api/v4/dreambooth.

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