AUTOMATIC1111 vs 
SwarmUI
AUTOMATIC1111 vs SwarmUI compared for 2026 — features, license, ease of use, performance and which one to choose. The classic Stable Diffusion web UI vs Friendly front-end with ComfyUI power inside.
Updated regularly · curated by OpenSourceAI.tech
AUTOMATIC1111 vs SwarmUI at a glance
| Spec | AUTOMATIC1111 | SwarmUI |
|---|---|---|
| Category | AI image generation | AI image generation |
| Type | Web UI | Web UI (modular) |
| License | AGPL-3.0 | MIT |
| Runs locally | Yes | Yes |
| Primary language | Python | C# |
| Ease of use | Intermediate | Beginner |
| Best for | users who want the biggest extension ecosystem | easy image generation without giving up ComfyUI depth |
| GitHub stars | 164.3k | 4.4k |
Feature comparison
| Feature | AUTOMATIC1111 | SwarmUI |
|---|---|---|
| Runs locally | ✓ | ✓ |
| Node workflows | ✗ | ✓ |
| Inpainting | ✓ | ✓ |
| LoRA support | ✓ | ✓ |
| ControlNet | ✓ | ✓ |
| API | ✓ | ✓ |
How AUTOMATIC1111 and SwarmUI score
| Criterion | AUTOMATIC1111 | SwarmUI |
|---|---|---|
| Popularity | 5.0 | 2.5 |
| Maintenance | 4.0 | 5.0 |
| Ease of use | 3.5 | 5.0 |
| Privacy | 5.0 | 5.0 |
| License freedom | 3.5 | 5.0 |
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
SwarmUI
SwarmUI pairs an accessible generate-and-go interface with a full ComfyUI backend: beginners click, power users open the node graph, and multi-GPU grids come free.
- Simple tab for beginners, ComfyUI graph one click away
- First-class support for new models (Flux, SD3.5, video)
- Multi-backend and multi-GPU orchestration built in
Key differences
AUTOMATIC1111 is web UI, while SwarmUI is web UI (modular). Their licenses differ (AGPL-3.0 vs MIT), which matters if you ship a commercial product. AUTOMATIC1111 leans more intermediate-friendly, whereas SwarmUI is more suited to beginner users. In short, AUTOMATIC1111 fits users who want the biggest extension ecosystem, and SwarmUI fits easy image generation without giving up ComfyUI depth.
Which should you choose?
Choose AUTOMATIC1111 for users who want the biggest extension ecosystem. Choose SwarmUI for easy image generation without giving up ComfyUI depth.
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 SwarmUI easier to use?
SwarmUI is generally the easier of the two to get started with, while AUTOMATIC1111 rewards more setup with more control.
Are AUTOMATIC1111 and SwarmUI free?
AUTOMATIC1111 is free and open source (AGPL-3.0), and SwarmUI is free and open source (MIT). Neither charges for the core software.
Can I run AUTOMATIC1111 and SwarmUI locally?
AUTOMATIC1111: yes · SwarmUI: yes. Both can be used without sending your data to a third-party cloud where their setup allows.
AUTOMATIC1111 vs SwarmUI — which should I pick in 2026?
Choose AUTOMATIC1111 for users who want the biggest extension ecosystem. Choose SwarmUI for easy image generation without giving up ComfyUI depth.
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