Stable Diffusion: Running It on Your Own PC
Stable Diffusion's hallmark is that it can run locally. Without sending data outside, you can customize it freely and without limit.
Advantages of Local Execution
- Don't send confidential material externally (privacy)
- No usage-based billing for the number of generations
- Deep customization with models and extensions (LoRA, etc.)
Which Model to Run
The current top tier is SD4 (Base and Ultra), announced in April 2026 on a new DiT architecture; SD4 Ultra outputs at a native 4096x4096 and carries a dedicated text-glyph module for sharp in-image text. The SD 3.5 line (Medium and Large) is still the practical choice when your GPU is modest, and non-Stability models such as FLUX.1 run in the same local environment.
Conditions to Get Started
- A PC with a sufficiently powerful GPU (the requirements are heavy)
- Setting up the execution environment (WebUI-type)
- Checking model licenses (commercial usability depends on the model)
Caution
- Setup and operation are difficult. For convenience, choose an API type
- Always confirm the license and training source of the model/LoRA
- Rights of output and consideration for third-party likeness/works are the user's responsibility
Positioning
For advanced users who choose "freedom and privacy." Use Midjourney or GPT Image 2.0 in ChatGPT when convenience matters most, and Stable Diffusion for deep crafting and confidentiality.
