head to head · open source
stable-diffusion-webui vs CopilotKit
stable-diffusion-webui has 165,228 GitHub stars, 31,916 forks, 2,510 open issues and last shipped 8 months ago. CopilotKit has 38,475 stars, 4,798 forks, 295 open issues and last shipped yesterday. stable-diffusion-webui leads on adoption by 329% (165,228 vs 38,475 stars). stable-diffusion-webui is written in Python under AGPL-3.0; CopilotKit is written in TypeScript under MIT. stable-diffusion-webui has attracted 19% as many forks as stars, CopilotKit 12%. CopilotKit 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 | CopilotKit | |
|---|---|---|
| GitHub stars | ★ 165K | ★ 38K |
| License | AGPL-3.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-03-02 | 2026-11-02 |
| Forks | ⑂ 32K | ⑂ 4.8K |
| 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 CopilotKit if
- You want the CopilotKit feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and CopilotKit 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 CopilotKit
CopilotKit Docs · Examples · CopilotKit Intelligence · Discord Build agent native applications — on any framework, on any surface. Generative UI, shared state, and human in the loop workflows for React, Angular, Vue, React Native — and in Slack and Microsoft Teams. What is CopilotKit? CopilotKit is a best in class SDK for building full stack agentic applications, Generative UI, and chat applications. What started as a React library is now the horizontal layer between your agents and your users : the same agent can power your web app, your mobile app, and your team's Slack or Microsoft Teams workspace. We are the…
read the full CopilotKit overview →
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Frequently asked questions
Is stable-diffusion-webui or CopilotKit more popular?
stable-diffusion-webui has 165,228 GitHub stars and CopilotKit has 38,475. stable-diffusion-webui has the larger community by that measure.
Are stable-diffusion-webui and CopilotKit free?
Both are open source. stable-diffusion-webui is licensed under AGPL-3.0 and CopilotKit under MIT. Neither carries a licence fee.
What is the difference between stable-diffusion-webui and CopilotKit?
stable-diffusion-webui is written in Python and CopilotKit in TypeScript. 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 CopilotKit?
Choose stable-diffusion-webui if you want the larger community (165,228 stars) or its AGPL-3.0 licence terms. Choose CopilotKit if its feature set, stack or MIT licence fits better. Both are self-hostable.