head to head · open source
Langchain-Chatchat vs ChatUI
Langchain-Chatchat has 38,715 GitHub stars, 6,255 forks, 26 open issues and last shipped 12 months ago. ChatUI has 4,463 stars, 426 forks, 53 open issues and last shipped 24 days ago. Langchain-Chatchat leads on adoption by 767% (38,715 vs 4,463 stars). Langchain-Chatchat is written in Python under Apache-2.0; ChatUI is written in TypeScript under MIT. Langchain-Chatchat has attracted 16% as many forks as stars, ChatUI 10%. ChatUI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (chatbot), 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
| Langchain-Chatchat | ChatUI | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 4.5K |
| License | Apache-2.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2025-11-10 | 2026-10-12 |
| Forks | ⑂ 6.3K | ⑂ 426 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Langchain-Chatchat if
- You weight community size — 39K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick ChatUI if
- You want the ChatUI feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and ChatUI fits your workflow better
About Langchain-Chatchat
🌍 READ THIS IN ENGLISH 📃 LangChain Chatchat (原 Langchain ChatGLM) 基于 ChatGLM 等大语言模型与 Langchain 等应用框架实现，开源、可离线部署的 RAG 与 Agent 应用项目。 目录 概述 功能介绍 0.3.x 功能一览 已支持的模型推理框架与模型 快速上手 pip 安装部署 源码安装部署/开发部署 Docker 部署 项目里程碑 联系我们 概述 🤖️ 一种利用 langchain 思想实现的基于本地知识库的问答应用，目标期望建立一套对中文场景与开源模型支持友好、可离线运行的知识库问答解决方案。 💡 受 GanymedeNil 的项目 document.ai 和 AlexZhangji 创建的 ChatGLM 6B Pull Request 启发，建立了全流程可使用开源模型实现的本地知识库问答应用。本项目的最新版本中可使用 Xinference、Ollama 等框架接入 GLM 4 Chat、 Qwen2 Instruct、 Llama3 等模型，依托于 langchain 框架支持通过基于 FastAPI 提供的 API 调用服务，或使用基于 Streamlit 的 WebUI 进行操作。 ✅ 本项目支持市面上主流的开源 LLM、 Embedding 模型与向量数据库，可实现全部使用 开源 模型 离线私有部署…
read the full Langchain-Chatchat overview →
About ChatUI
The UI design language and React library for Conversational UI Website： English 简体中文 Features 😎 Best Practices : The best practice for chat interaction based on our experience of Alime Chatbot 🛡 TypeScript : Written in TypeScript with predictable static types 📱 Responsive : Responsive design to adapt automatically to whatever device ♿ Accessibility : Accessibility support and get the certification from Accessibility Research Association 🎨 Theming : Powerful theme customization in every detail 🌍 International : Internationalization support for dozens of languages Environment Support Modern browsers (support…
read the full ChatUI overview →
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Frequently asked questions
Is Langchain-Chatchat or ChatUI more popular?
Langchain-Chatchat has 38,715 GitHub stars and ChatUI has 4,463. Langchain-Chatchat has the larger community by that measure.
Are Langchain-Chatchat and ChatUI free?
Both are open source. Langchain-Chatchat is licensed under Apache-2.0 and ChatUI under MIT. Neither carries a licence fee.
What is the difference between Langchain-Chatchat and ChatUI?
Langchain-Chatchat is written in Python and ChatUI 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, Langchain-Chatchat or ChatUI?
Choose Langchain-Chatchat if you want the larger community (38,715 stars) or its Apache-2.0 licence terms. Choose ChatUI if its feature set, stack or MIT licence fits better. Both are self-hostable.