head to head · open source
ComfyUI vs FastGPT
ComfyUI has 133,963 GitHub stars, 15,874 forks, 4,894 open issues and last shipped today. FastGPT has 29,694 stars, 7,319 forks, 172 open issues and last shipped today. ComfyUI leads on adoption by 351% (133,963 vs 29,694 stars). ComfyUI is written in Python under GPL-3.0; FastGPT is written in TypeScript under a custom or non-standard licence. ComfyUI has attracted 12% as many forks as stars, FastGPT 25%. FastGPT was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| ComfyUI | FastGPT | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 30K |
| License | GPL-3.0 | Custom / other |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 16K | ⑂ 7.3K |
| 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 FastGPT if
- You want the FastGPT feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and FastGPT 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 FastGPT
FastGPT is an open source AI knowledge base platform built on large language models (LLMs). It provides integrated tools for data ingestion, vector retrieval (RAG), and visual workflow orchestration, enabling users to construct and deploy question answering applications without writing extensive backend code. The platform runs on Next.js and supports integration with multiple LLM providers including OpenAI, Claude, DeepSeek, Qwen, and others.
read the full FastGPT overview →
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Frequently asked questions
Is ComfyUI or FastGPT more popular?
ComfyUI has 133,963 GitHub stars and FastGPT has 29,694. ComfyUI has the larger community by that measure.
Are ComfyUI and FastGPT free?
Both are open source. ComfyUI is licensed under GPL-3.0, and FastGPT has no licence declared in this registry. Both are free to self-host.
What is the difference between ComfyUI and FastGPT?
ComfyUI is written in Python and FastGPT 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, ComfyUI or FastGPT?
Choose ComfyUI if you want the larger community (133,963 stars) or its GPL-3.0 licence terms. Choose FastGPT if its feature set, stack or Custom / other licence fits better. Both are self-hostable.