kitio.aiStable Diffusion web UI vs IOPaint
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Stable Diffusion web UI starts at Free and IOPaint starts at Free. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Text-to-image and img2img
- Inpainting
- Extensions ecosystem
- Upscaling
- Prompt matrix and X/Y plots
- Object and watermark removal
- Multiple inpainting models
- Prompt-based replacement
- Outpainting
- Plugins
| Feature | Stable Diffusion web UI | IOPaint |
|---|---|---|
| Best for | Popular open-source browser interface for local Stable Diffusion | Free self-hosted inpainting tool for removing objects from images |
| Category | Image | Image |
| Pricing model | Free | Free |
| Starting price | Free | Free |
| Free plan | Yes, fully free | Yes, fully free |
| Made by | AUTOMATIC1111 | Sanster |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Stable Diffusion web UI starts at Free and IOPaint starts at Free. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Stable Diffusion web UI
- Free and fully local
- Huge extension library
- Familiar tab layout
- Slow to support new models
- Setup needs some tech skill
- Development has slowed
IOPaint
- Free and private
- Several fill models
- Runs on CPU too
- Needs local install
- Basic interface
- Slow on CPU for big images
Which one should you choose?
Choose Stable Diffusion web UI if you want:
- Free and fully local
- Huge extension library
- Familiar tab layout
Watch out: slow to support new models.
Choose IOPaint if you want:
- Free and private
- Several fill models
- Runs on CPU too
Watch out: needs local install.
Stable Diffusion web UI vs IOPaint FAQ
What is the difference between Stable Diffusion web UI and IOPaint?
Stable Diffusion web UI: Popular open-source browser interface for local Stable Diffusion. IOPaint: Free self-hosted inpainting tool for removing objects from images. Both are image tools.
Is Stable Diffusion web UI or IOPaint cheaper?
Stable Diffusion web UI starts at Free and IOPaint starts at Free. Check both pricing pages for current plans.
Do Stable Diffusion web UI and IOPaint have free plans?
Stable Diffusion web UI: Yes, fully free. IOPaint: Yes, fully free.
Who makes Stable Diffusion web UI?
Stable Diffusion web UI is made by AUTOMATIC1111.
Who makes IOPaint?
IOPaint is made by Sanster.
Which should I choose, Stable Diffusion web UI or IOPaint?
Choose Stable Diffusion web UI if you value free and fully local and huge extension library. Choose IOPaint if you value free and private and several fill models.