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Head-to-head · AI Image Generators

AUTOMATIC1111 Stable Diffusion WebUI vs ComfyUI

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score AUTOMATIC1111 Stable Diffusion WebUI #7 in AI Image Generators 8.9/10 Free plan Free plan✓ 4 of 4 features Visit AUTOMATIC1111
ComfyUI #8 in AI Image Generators 8.8/10 Free plan Free plan✓ 4 of 4 features Visit ComfyUI

AUTOMATIC1111 Stable Diffusion WebUI leads on 0 checks, ComfyUI on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAUTOMATIC1111 Stable Diffusion WebUI · 8.9/10
  • Free planboth

AUTOMATIC1111 Stable Diffusion WebUI scores higher on our rubric for ai image generators: 8.9 against 8.8 out of 10; our editors rank them #7 and #8.

AUTOMATIC1111 Stable Diffusion WebUI is the better fit for free local Stable Diffusion experimentation. ComfyUI is the better fit for advanced workflow builders.

  • AUTOMATIC1111 Stable Diffusion WebUI fits best

    Free local Stable Diffusion experimentation

  • ComfyUI fits best

    Advanced workflow builders

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Side by side

Feature AUTOMATIC1111 Stable Diffusion WebUI 8.9/10 Visit ↗ ComfyUI 8.8/10 Visit ↗
At a glance
Editor score 8.9 8.8
Ranking #7 in AI Image Generators #8 in AI Image Generators
Best for Free local Stable Diffusion experimentation Advanced workflow builders
Pricing model Free Free plan + paid
Starting price Free plan $192/yr
Free plan ✓ ✓
Free trial — —
Deployment Self-hosted Cloud, Self-hosted, Desktop
Platforms Web, Windows, macOS, Linux Web, Windows, macOS, Linux
Support Community, Docs Community, Docs
Integrations 7 integrations 4 integrations
Built for Solo, Small business, Mid-market Solo, Small business, Mid-market, Enterprise
Features AUTOMATIC1111 Stable Diffusion WebUI 4/4 · ComfyUI 4/4
Text-to-image ✓ ✓
Reference images ✓ ✓
Image editing ✓ ✓
API access ✓ ✓
Specs
Monthly credits Not checked yet Not checked yet
Commercial use Not checked yet Not checked yet
Output formats PNG, JPEG PNG, EXR, AVIF
Our review
Pros
  • Text-to-image, image-to-image, inpainting, and outpainting workflows
  • Batch processing, model controls, prompt tools, and upscaling
  • HTTP API plus integrations for restoration and super-resolution
  • Free open-source core with local and self-hosted execution
  • Supports generation, editing, compositing, model merging, and upscaling
  • Offers custom nodes, local APIs, reusable subgraphs, and workflow templates
Cons
  • Requires self-hosted installation on a supported operating system
  • Model licenses may differ from the software's AGPL-3.0 license
  • Broad controls can demand more configuration than a narrow image tool
  • Standard does not include importing custom models
  • Cloud workflows have runtime limits on Standard, Creator, and Pro
  • Broad support across media types may exceed the needs of focused image users
Our verdict

AUTOMATIC1111 Stable Diffusion WebUI is an open-source, self-hosted browser interface for generating and transforming images with Stable Diffusion models. It suits creators, developers, and technical teams who want local control over…

Read the review →

ComfyUI is an open-source, node-based AI creation engine for visual professionals, developers, and creators who want editable control over image-generation workflows. Users connect models, parameters, processing steps, and outputs in a…

Read the review →
  1. AUTOMATIC1111 Stable Diffusion WebUIAI Image Generators 8.9Free plan
  2. ComfyUIAI Image Generators 8.8Free plan

Strengths and trade-offs

  • AUTOMATIC1111 Stable Diffusion WebUI — where it wins

    • Text-to-image, image-to-image, inpainting, and outpainting workflows
    • Batch processing, model controls, prompt tools, and upscaling
    • HTTP API plus integrations for restoration and super-resolution

    Where it doesn't

    • Requires self-hosted installation on a supported operating system
    • Model licenses may differ from the software's AGPL-3.0 license
    • Broad controls can demand more configuration than a narrow image tool

  • ComfyUI — where it wins

    • Free open-source core with local and self-hosted execution
    • Supports generation, editing, compositing, model merging, and upscaling
    • Offers custom nodes, local APIs, reusable subgraphs, and workflow templates

    Where it doesn't

    • Standard does not include importing custom models
    • Cloud workflows have runtime limits on Standard, Creator, and Pro
    • Broad support across media types may exceed the needs of focused image users

More comparisons

All AI image generators comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update