ComfyUI
The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface. The fastest local inference engine in the world.
Our verdict
A usable project with some maintenance caveats. This assessment is derived from GitHub's own repository metrics on 2026-10-21, not from hands-on testing.
The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface. The fastest local inference engine in the world. The project is written primarily in Python, released under GPL-3.0, and has 141,085 stars and 16,689 forks on GitHub. 358 contributors have committed to it, and the most recent push was 2026-10-21. The latest tagged release is v0.42.1 (2026-10-19). Figures come from the GitHub API on 2026-10-21 and are refreshed daily; the score below weighs adoption, maintenance, release discipline, contributor breadth, licence clarity and issue hygiene.
Reviewed by AI Review Rating from GitHub API data How we score
Repository
- Licence
- GPL-3.0
- Language
- Python
- Last push
- 2026-10-21
Releases
-
v0.42.1v0.42.1 -
v0.42.0v0.42.0 -
v0.41.0v0.41.0 -
v0.40.0v0.40.0 -
v0.39.0v0.39.0 -
v0.38.0v0.38.0
Pros and cons
Pros
Cons
Pricing
- Free tierYes
- LicenceGPL-3.0
- Self-hostYes, source is public
- Public price listNot published
ComfyUI does not publish a web price list. For consumer apps that usually means pricing appears inside the product; for enterprise tools it means talking to sales. Why we do this
Visit www.comfy.orgTrends
Price points are recorded when a price moves, not on a schedule, so a flat run means the price held. Release cadence comes from GitHub releases. A series appears only once we have watched it for long enough to have more than one observation.
User reviews
No one has reviewed ComfyUI here yet. Reviews are moderated before they appear, and our own score is editorial and separate from user ratings, though once reviews land they do lift it.
Used ComfyUI? Review it.
Sign in to rate it. One account, one review per tool, so the score means something.
Requiring an account is how we keep this page free of drive-by spam. We never sell your address.
ComfyUI alternatives
PEFT
🤗 PEFT: State-of-the-art Parameter-Efficient Fine-Tuning.
🥈 
PyTorch Image Models (timm)
The largest collection of PyTorch image encoders / backbones.…
🥉 
fastai
The fastai deep learning library
LlamaFactory
Unified Efficient Fine-Tuning of 100+ LLMs & VLMs (ACL…
DeepSpeed
DeepSpeed is a deep learning optimization library that makes…
Hugging Face Datasets
🤗 The largest hub of ready-to-use datasets for AI…
Side by side
| Tool | Our score | From | Free tier | Best for | |
|---|---|---|---|---|---|
| ComfyUI this page | 6.9 | - | Yes | ||
| 🥇PEFT | 7.7 | - | Yes | ||
| 🥈PyTorch Image Models (timm) | 7.7 | - | Yes | ||
| 🥉fastai | 7.4 | - | Yes | ||
| LlamaFactory | 7.3 | - | Yes | ||
| DeepSpeed | 7 | - | Yes | ||
| Hugging Face Datasets | 7 | - | Yes |
Questions
Is ComfyUI free?
Yes. ComfyUI advertises a free tier on its own site.
How much does ComfyUI cost?
ComfyUI does not publish a web price list. For consumer apps that usually means pricing appears inside the product; for enterprise tools it means talking to sales.
Is ComfyUI open source?
Yes. ComfyUI is a public repository released under GPL-3.0. You can self-host or inspect the source directly.
How is ComfyUI scored here?
ComfyUI scores 6.9 out of 10. That comes from a desk review of public evidence, which is capped at 8.5 out of 10: public pricing, documentation, maintenance signals and how much we could actually verify. Affiliate relationships are excluded from scoring entirely. The full rubric is published on our methodology page.