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.
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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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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 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
Limitations
Frequently Asked Questions
What is Stable Diffusion API?
Is Stable Diffusion API free?
How do I get a Stable Diffusion API key?
Can I use Stable Diffusion API commercially?
What models can I use?
Getting Started
- 1 Sign up at modelslab.com and obtain your free API key (Stable Diffusion API is now part of ModelsLab).
- 2 Read the docs and pick a model (examples include sd-1.5, SDXL, Flux, etc.).
- 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
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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