Stable Diffusion

AI Image Generation

An open-source AI image generation model developed by Stability AI. Can be run locally for free. Maximum customizability is its greatest strength.

4.2
ローカルPC(Windows/macOS/Linux)DreamStudio(Web)各種WebUI

What is Stable Diffusion?

Stable Diffusion is an open-source image generation AI model developed by Stability AI. Unlike other AI image generation services, the model is publicly available, meaning you can run it on your own PC for free. Multiple versions are available, including SDXL and SD3, each with different image quality and style characteristics. Techniques such as LoRA, ControlNet, and Textual Inversion allow you to train the model on specific styles and characters for customization. With WebUI tools (AUTOMATIC1111, ComfyUI), you can operate it intuitively through a GUI. It is free for commercial use and is utilized by many companies and creators.

Pricing Plans

1Free (open source, local execution)
2DreamStudio from $10 (cloud version, credit-based)
3Various WebUIs free

Key Features

Text-to-image generation (txt2img)
Image-to-image generation (img2img)
Inpainting and outpainting
Style customization with LoRA and Textual Inversion
Pose and composition control with ControlNet
GUI operation via WebUI (AUTOMATIC1111, ComfyUI)

Pros & Cons

Pros

  • Completely free to run locally (open source)
  • Advanced customization with LoRA and ControlNet
  • Free for commercial use (permissive licensing)
  • Extremely active community with abundant models and extensions
  • Privacy protection (data stays local)

Cons

  • Requires a high-performance GPU (8GB+ VRAM recommended)
  • Setup requires technical knowledge
  • Default output quality may fall short of Midjourney in some cases

Frequently Asked Questions

Q. Is Stable Diffusion really free?

A. Yes, since it is open source, downloading and running the model is completely free. However, you need a PC with a capable GPU. The cloud-based DreamStudio is a paid service (credit-based).

Q. What PC specs are required?

A. An NVIDIA GPU with 8GB+ VRAM is recommended. It can run with 6GB VRAM, but generation speed and resolution will be limited.

Q. Which is better, Midjourney or Stable Diffusion?

A. Choose Midjourney for easy, high-quality image generation. Choose Stable Diffusion if customizability and cost are priorities. Stable Diffusion offers more freedom for technically inclined users.

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