head to head · open source
stable-diffusion-webui vs Ptero
stable-diffusion-webui has 165,228 GitHub stars, 31,916 forks, 2,510 open issues and last shipped 8 months ago. Ptero has 1,519 stars, 18 forks, 0 open issues and last shipped 6 days ago. stable-diffusion-webui leads on adoption by 10,777% (165,228 vs 1,519 stars). stable-diffusion-webui is written in Python under AGPL-3.0; Ptero is written in PHP under Apache-2.0. stable-diffusion-webui has attracted 19% as many forks as stars, Ptero 1%. Ptero 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.
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Side by side
| stable-diffusion-webui | Ptero | |
|---|---|---|
| GitHub stars | ★ 165K | ★ 1.5K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Python | PHP |
| Last push | 2026-03-02 | 2026-10-28 |
| Forks | ⑂ 32K | ⑂ 18 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick stable-diffusion-webui if
- You weight community size — 165K stars and counting
- You want the AGPL-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 stable-diffusion-webui
Stable Diffusion web UI A web interface for Stable Diffusion, implemented using Gradio library. Features Detailed feature showcase with images: Original txt2img and img2img modes One click install and run script (but you still must install python and git) Outpainting Inpainting Color Sketch Prompt Matrix Stable Diffusion Upscale Attention, specify parts of text that the model should pay more attention to a man in a ((tuxedo)) will pay more attention to tuxedo a man in a (tuxedo:1.21) alternative syntax select text and press Ctrl+Up or Ctrl+Down (or Command+Up or Command+Down if you're on a MacOS) to…
read the full stable-diffusion-webui overview →
About Ptero
🚀 Ptero – Free, Multi Model AI Chat Platform Ptero is a free, open source AI chat platform that gives you instant access to multiple powerful language models through a single, clean interface. No signup is required, and it is designed for developers, students, and creators who value privacy and simplicity. Try it live: 💖 Sponsors We are incredibly grateful to our sponsors for their support in keeping Ptero free and accessible for everyone. ✨ Key Features Access Multiple AI Models : Choose from a wide range of models, including DeepSeek V4 , Llama 3.3 , Qwen , MiniMax , Mistral , and more. One Click Model…
read the full Ptero overview →
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Frequently asked questions
Is stable-diffusion-webui or Ptero more popular?
stable-diffusion-webui has 165,228 GitHub stars and Ptero has 1,519. stable-diffusion-webui has the larger community by that measure.
Are stable-diffusion-webui and Ptero free?
Both are open source. stable-diffusion-webui is licensed under AGPL-3.0 and Ptero under Apache-2.0. Neither carries a licence fee.
What is the difference between stable-diffusion-webui and Ptero?
stable-diffusion-webui 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, stable-diffusion-webui or Ptero?
Choose stable-diffusion-webui if you want the larger community (165,228 stars) or its AGPL-3.0 licence terms. Choose Ptero if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.