Reviewed comparison
AUTOMATIC1111 vs ComfyUI
AUTOMATIC1111 and ComfyUI are mature local image-generation interfaces: one organizes controls in a conventional web UI, while the other makes the execution graph explicit.
Decision summary
AUTOMATIC1111 or ComfyUI?
Choose AUTOMATIC1111 for a familiar tabbed Stable Diffusion workflow and its extension catalog. Choose ComfyUI when reproducible node graphs, advanced pipelines, API automation, and newer workflow composition matter most.
Choose AUTOMATIC1111 when
- You prefer direct parameter panels over node graphs
- Existing extensions define your workflow
- You focus on established Stable Diffusion workflows
Choose ComfyUI when
- You need reusable and inspectable graph workflows
- Complex conditioning and media pipelines are common
- API-driven workflow execution is important
Both ecosystems change quickly and third-party extensions can break environments or introduce unsafe code. Pin versions, isolate installations, and verify each workflow against its exact dependencies.
Side-by-side comparison
Differences are highlighted. Verify version-specific requirements in the official documentation.
| Criterion | AUTOMATIC1111 AUTOMATIC1111 | ComfyUI Comfy Org |
|---|---|---|
| Product and deployment | ||
| Primary role | Image Generation | Image Generation |
| Deployment | Desktop / localSelf-hosted | Desktop / localSelf-hostedManaged cloud |
| Open source | Yes | Yes |
| License | AGPL-3.0 | GPL-3.0 |
| Pricing model | Free and open source | Free and open source; optional paid cloud |
| Setup difficulty | Medium | Medium |
| Audience | Personal | PersonalTeam |
| Compatibility | ||
| Platforms | macOSWindowsLinux | macOSWindowsLinux |
| Accelerators | Apple SiliconNVIDIA GPUAMD GPUIntel GPUCPU | CPUApple SiliconNVIDIA GPUAMD GPUIntel GPU |
| Install methods | Install scriptRelease packageBuild from source | Desktop applicationPortable packagePythonManaged cloud |
| Model formats | SafetensorsCheckpointLoRATextual inversion | SafetensorsCheckpointLoRADiffusers |
| Integrations | ExtensionsCivitaiStable Diffusion WebUI API | Custom nodesComfyUI APIHugging FaceCivitai |
| Capabilities | ||
| Web interface | Yes | Yes |
| API | Yes | Yes |
| Model management | Yes | Yes |
| Multi-user | No | No |
| Multi-GPU | No | No |
| Multi-node | No | No |
| RAG | No | No |
| Agents | No | No |
| Image generation | Yes | Yes |
| Tool calling | No | No |
AUTOMATIC1111 is best for
- Detailed Stable Diffusion controls
- Users relying on the WebUI extension ecosystem
- Local experimentation with many image settings
Important limitations
- Extensions can create security and compatibility risk
- Environment and version management can be fragile
ComfyUI is best for
- Reproducible image-generation workflows
- Advanced control over model pipelines
- Local image and media experimentation
Important limitations
- Complex graphs have a learning curve
- Third-party nodes vary in quality and security