Frequently asked questions
Pricing, limits, model access, and how to get started with the Stable Diffusion API.
What is a Stable Diffusion API?
Stable Diffusion API is a platform providing access to AI models for generating images, text, and videos via a simple REST API. It handles GPU infrastructure so you can focus on building.
Is Stable Diffusion API free?
No. Creating a ModelsLab account is free, but API access requires a paid plan: Basic at $21/month (3,250 API calls), Standard at $47/month (10,000 API calls), or Open Source Unlimited at $149/month (unlimited open-source model generations; third-party models billed separately). Pricing details are on modelslab.com/pricing.
Is Stable Diffusion API legal to use?
Yes. We use public models and our own models. We do not use any illegal models. You retain copyright on images you generate and can use them commercially.
How do I run Stable Diffusion API?
It is a JSON REST API compatible with any language. Send a POST request with your API key, model_id, and prompt. Code samples available in cURL, Python, and Node.
What is the price of DreamBooth model training?
DreamBooth fine-tuning starts at $3 per model. API subscription plans are $21/month (Basic), $47/month (Standard), and $149/month (Open Source Unlimited).
Can I access all public models?
Yes. You can generate from any of the 1,000+ public models available, or upload your own custom model.
Do I need a GPU?
No. The service runs on our server-side GPUs. You only need an internet connection and an API key.
Can I use the generated images commercially?
Yes. All images you generate via the API have your copyright. Commercial use is permitted.
Will I get access immediately after payment?
Yes. API key access is granted immediately after payment.
Do you offer support after purchase?
Yes. Our 24×7 support team is available to help with any issues.
Can I use Stable Diffusion API in Postman?
Yes. You can use the API in Postman or any HTTP client. See the documentation for endpoint details.
Is there a rate limit on the regular plan?
Yes — rate limits depend on your subscription tier. Higher tiers have more concurrent requests and faster queue priority.
Can I upload images using base64?
Yes. The API accepts base64-encoded images for img2img and inpainting endpoints. See the docs for the upload-base64 endpoint.
How do I load models on the Enterprise server?
Use the load-model endpoint with the model URL or HuggingFace ID. Loading typically takes up to 10 minutes for the first request.
How do I use text-to-image in the playground?
Sign in to your account, go to the playground, select a model, enter a prompt, and click generate. Results appear in seconds.
How do I use image-to-image in the playground?
In the playground, switch to image-to-image mode, upload an init image, set strength, and provide a prompt to transform the image.
Do I get free generations?
No. ModelsLab is paid-only: there is no free tier, free trial, or free credits. API access starts with the Basic plan at $21/month (3,250 API calls).
Can I upload local images for DreamBooth training?
Yes. Upload your training images to a cloud storage service (S3, Cloudinary) and supply the direct URLs in the training request.
How long are images stored?
All generated images are stored on a shared AWS S3 bucket for 30 days. After that they are deleted unless you download them.
When are accounts deleted?
Inactive accounts are automatically deleted after extended periods of inactivity. Active subscribers retain their account indefinitely.
Where do I find my API key?
Go to Dashboard → API Settings → View API Key on modelslab.com.
How do I change my API key?
In Dashboard → API Settings, click Generate New Key. Old keys are invalidated immediately.
How do I change my password?
In Dashboard → Account Settings → Change Password.
What happens to my data when I delete my account?
All generated images, training data, and account information are permanently deleted within 30 days of account deletion.
