head to head · open source
ComfyUI vs Ptero
ComfyUI has 133,963 GitHub stars, 15,874 forks, 4,894 open issues and last shipped today. Ptero has 1,288 stars, 15 forks, 0 open issues and last shipped 5 days ago. ComfyUI leads on adoption by 10,301% (133,963 vs 1,288 stars). ComfyUI is written in Python under GPL-3.0; Ptero is written in PHP under Apache-2.0. ComfyUI has attracted 12% as many forks as stars, Ptero 1%. ComfyUI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| ComfyUI | Ptero | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 1.3K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | Python | PHP |
| Last push | 2026-09-20 | 2026-09-15 |
| Forks | ⑂ 16K | ⑂ 15 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ComfyUI if
- You weight community size — 134K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Ptero if
- You want the Ptero feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches PHP
- You evaluated both and Ptero fits your workflow better
About ComfyUI
ComfyUI is a GPL 3.0 licensed Python and PyTorch node graph application, local API, and backend for running diffusion models across image, video, audio, 3D, and text workflows, built for visual professionals who want control over every model, parameter, and output, and for developers who embed those workflows into production pipelines.
read the full ComfyUI overview →
About Ptero
Ptero is a free, open source AI chat platform that provides access to multiple large language models through a single, clean interface. It is designed for developers, students, and creators who value privacy and simplicity, and it requires no signup to use. The project lives in the PHP and JavaScript ecosystem: the frontend is built with JavaScript, HTML, and CSS, while the backend uses PHP and a REST API, primarily for its WordPress integration. It sits in the AI and Machine Learning category, specifically under AI Interaction and Interfaces.
read the full Ptero overview →
More in AI & Machine Learning
Related comparisons
More AI Interaction & Interfaces projects
Compare either of these against the rest of the AI Interaction & Interfaces field.
Frequently asked questions
Is ComfyUI or Ptero more popular?
ComfyUI has 133,963 GitHub stars and Ptero has 1,288. ComfyUI has the larger community by that measure.
Are ComfyUI and Ptero free?
Both are open source. ComfyUI is licensed under GPL-3.0 and Ptero under Apache-2.0. Neither carries a licence fee.
What is the difference between ComfyUI and Ptero?
ComfyUI is written in Python and Ptero in PHP. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ComfyUI or Ptero?
Choose ComfyUI if you want the larger community (133,963 stars) or its GPL-3.0 licence terms. Choose Ptero if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.