AUTOMATIC1111 vs 
Stability Matrix
AUTOMATIC1111 vs Stability Matrix compared for 2026 — features, license, ease of use, performance and which one to choose. The classic Stable Diffusion web UI vs One app to install and manage every SD interface.
Updated regularly · curated by OpenSourceAI.tech
AUTOMATIC1111 vs Stability Matrix at a glance
| Spec | AUTOMATIC1111 | Stability Matrix |
|---|---|---|
| Category | AI image generation | AI image generation |
| Type | Web UI | Manager / launcher |
| License | AGPL-3.0 | AGPL-3.0 |
| Runs locally | Yes | Yes |
| Primary language | Python | C# |
| Ease of use | Intermediate | Beginner |
| Best for | users who want the biggest extension ecosystem | juggling multiple Stable Diffusion UIs painlessly |
| GitHub stars | 164.3k | 8.5k |
Feature comparison
| Feature | AUTOMATIC1111 | Stability Matrix |
|---|---|---|
| Runs locally | ✓ | ✓ |
| Node workflows | ✗ | ✓ |
| Inpainting | ✓ | ✓ |
| LoRA support | ✓ | ✓ |
| ControlNet | ✓ | ✓ |
| API | ✓ | ✗ |
How AUTOMATIC1111 and Stability Matrix score
| Criterion | AUTOMATIC1111 | Stability Matrix |
|---|---|---|
| Popularity | 5.0 | 3.0 |
| Maintenance | 4.0 | 5.0 |
| Ease of use | 3.5 | 5.0 |
| Privacy | 5.0 | 5.0 |
| License freedom | 3.5 | 3.5 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
AUTOMATIC1111
AUTOMATIC1111 (stable-diffusion-webui) is the classic, feature-packed Gradio web UI for Stable Diffusion, with a huge extension ecosystem and an enormous community.
- Massive extension and tutorial ecosystem
- Familiar form-based UI, gentle learning curve
- Huge community with answers for everything
Stability Matrix
Stability Matrix installs and updates ComfyUI, A1111, Forge and friends side by side, with shared model folders, checkpoint browsing and one-click launches.
- Installs A1111, ComfyUI, Forge & more in one click
- Shared model library across all interfaces
- Built-in CivitAI browser for checkpoints and LoRAs
Key differences
AUTOMATIC1111 is web UI, while Stability Matrix is manager / launcher. AUTOMATIC1111 leans more intermediate-friendly, whereas Stability Matrix is more suited to beginner users. In short, AUTOMATIC1111 fits users who want the biggest extension ecosystem, and Stability Matrix fits juggling multiple Stable Diffusion UIs painlessly.
Which should you choose?
Choose AUTOMATIC1111 for users who want the biggest extension ecosystem. Choose Stability Matrix for juggling multiple Stable Diffusion UIs painlessly.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is AUTOMATIC1111 or Stability Matrix easier to use?
Stability Matrix is generally the easier of the two to get started with, while AUTOMATIC1111 rewards more setup with more control.
Are AUTOMATIC1111 and Stability Matrix free?
AUTOMATIC1111 is free and open source (AGPL-3.0), and Stability Matrix is free and open source (AGPL-3.0). Neither charges for the core software.
Can I run AUTOMATIC1111 and Stability Matrix locally?
AUTOMATIC1111: yes · Stability Matrix: yes. Both can be used without sending your data to a third-party cloud where their setup allows.
AUTOMATIC1111 vs Stability Matrix — which should I pick in 2026?
Choose AUTOMATIC1111 for users who want the biggest extension ecosystem. Choose Stability Matrix for juggling multiple Stable Diffusion UIs painlessly.
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