head to head · open source
ComfyUI vs Langchain-Chatchat
ComfyUI has 133,963 GitHub stars, 15,874 forks, 4,894 open issues and last shipped today. Langchain-Chatchat has 38,643 stars, 6,266 forks, 26 open issues and last shipped 10 months ago. ComfyUI leads on adoption by 247% (133,963 vs 38,643 stars). ComfyUI is written in Python under GPL-3.0; Langchain-Chatchat is written in Python under Apache-2.0. ComfyUI has attracted 12% as many forks as stars, Langchain-Chatchat 16%. ComfyUI 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 | Langchain-Chatchat | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 39K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-09-20 | 2025-11-10 |
| Forks | ⑂ 16K | ⑂ 6.3K |
| 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 Langchain-Chatchat if
- You want the Langchain-Chatchat feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and Langchain-Chatchat 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 Langchain-Chatchat
Langchain Chatchat (formerly Langchain ChatGLM) is an open source RAG and Agent application built on the Langchain framework and designed to run against local large language models such as ChatGLM, Qwen, and Llama. It lives in the Python ecosystem, is distributed under the Apache 2.0 license, and is published on PyPI as langchain chatchat . The project targets Chinese language scenarios and open source models specifically, with the stated goal of providing a knowledge base question answering solution that can run entirely offline.
read the full Langchain-Chatchat overview →
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Frequently asked questions
Is ComfyUI or Langchain-Chatchat more popular?
ComfyUI has 133,963 GitHub stars and Langchain-Chatchat has 38,643. ComfyUI has the larger community by that measure.
Are ComfyUI and Langchain-Chatchat free?
Both are open source. ComfyUI is licensed under GPL-3.0 and Langchain-Chatchat under Apache-2.0. Neither carries a licence fee.
What is the difference between ComfyUI and Langchain-Chatchat?
ComfyUI is written in Python and Langchain-Chatchat in Python. 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 Langchain-Chatchat?
Choose ComfyUI if you want the larger community (133,963 stars) or its GPL-3.0 licence terms. Choose Langchain-Chatchat if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.