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ComfyUI vs Stable Diffusion

ComfyUI and Stable Diffusion are both Image Generation tools in our directory. This side-by-side comparison covers pricing, editorial scores, supported platforms, key features and open-source status so you can decide which one fits your needs.

Side-by-side comparison

AttributeComfyUIStable Diffusion
Product statusStatus not recordedStatus not recorded
VendorComfy OrgStability AI
Rating★ 4.7★ 4.6
PricingFreemiumFreemium
PlatformsWindows, macOS, Linux, Self-hosted, Cloud, APIWeb, Desktop, API
Key featuresNode-based workflow composition, JSON graph save/load, Model and custom-node configurationText-to-image model releases, SDXL base and optional refiner, SD3.5 Large documented separately
Headquarters——
Launched——
Open sourceYesNo

Key differences

  • ComfyUI carries the higher editorial score (4.7★ vs 4.6★).
  • Both ComfyUI and Stable Diffusion use a Freemium model.
  • ComfyUI is open source (its code is public), while Stable Diffusion is proprietary.
  • ComfyUI runs on Windows, macOS, Linux, Self-hosted, Cloud, API; Stable Diffusion runs on Web, Desktop, API.

ComfyUI and Stable Diffusion at a glance

ComfyUI

Comfy Org

Node-based media workflows with JSON graph exchange and custom extensions; local open-source software, paid cloud execution and external model calls have separate requirements and costs.

Rating
4.7★
Pricing
Freemium

Editorial verdict

Consider it when you need editable node workflows and can maintain their components. Confirm model permissions and local, cloud and external-call costs before production.

Strengths

  • Node-based composition and JSON workflow exchange
  • Local code available under GPL-3.0
  • Custom nodes and optional hosted/API workflows

Key features

  • Node-based workflow composition
  • JSON graph save/load
  • Model and custom-node configuration
  • Local software with optional paid cloud/Partner Nodes

Best for

  • Designing a versioned image or video workflow
  • Sharing a graph together with documented dependencies
  • Evaluating local versus hosted execution costs
Read the full ComfyUI review →

Stable Diffusion

Stability AI

A family of image models with downloadable releases and hosted options; capabilities and license terms depend on the exact checkpoint.

Rating
4.6★
Pricing
Freemium

Editorial verdict

Select the checkpoint and license first, then budget compute and validate the resulting images.

Strengths

  • Published model cards and downloadable checkpoints
  • Different deployment choices

Key features

  • Text-to-image model releases
  • SDXL base and optional refiner
  • SD3.5 Large documented separately
  • Self-hosting subject to model terms

Best for

  • Reviewed artwork and design experiments
  • Evaluation of a specific self-hosted checkpoint
Read the full Stable Diffusion review →

Feature overlap

  • The two tools have no listed features in common — see both feature lists above.
  • ComfyUI also lists: Node-based workflow composition, JSON graph save/load, Model and custom-node configuration, Local software with optional paid cloud/Partner Nodes
  • Stable Diffusion also lists: Text-to-image model releases, SDXL base and optional refiner, SD3.5 Large documented separately, Self-hosting subject to model terms

Frequently asked questions

Is ComfyUI or Stable Diffusion better?

By editorial score, ComfyUI scores higher (4.7★ vs 4.6★). Both are capable Image Generation tools, so review the feature comparison for your use case.

Which is cheaper, ComfyUI or Stable Diffusion?

Both ComfyUI and Stable Diffusion use a Freemium pricing model.

Are ComfyUI and Stable Diffusion open source?

ComfyUI is open source, while Stable Diffusion is proprietary.

What platforms do ComfyUI and Stable Diffusion support?

ComfyUI supports Windows, macOS, Linux, Self-hosted, Cloud, API; Stable Diffusion supports Web, Desktop, API.

What are the main features of ComfyUI and Stable Diffusion?

ComfyUI: Node-based workflow composition, JSON graph save/load, Model and custom-node configuration, Local software with optional paid cloud/Partner Nodes. Stable Diffusion: Text-to-image model releases, SDXL base and optional refiner, SD3.5 Large documented separately, Self-hosting subject to model terms.

Visit ComfyUI →Visit Stable Diffusion →

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