head to head · open source
nanobot vs assistant-ui
nanobot has 49,806 GitHub stars, 8,711 forks, 775 open issues and last shipped yesterday. assistant-ui has 12,936 stars, 1,311 forks, 207 open issues and last shipped yesterday. nanobot leads on adoption by 285% (49,806 vs 12,936 stars). nanobot is written in Python under MIT; assistant-ui is written in TypeScript under MIT. nanobot has attracted 17% as many forks as stars, assistant-ui 10%. assistant-ui 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
| nanobot | assistant-ui | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 13K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 8.7K | ⑂ 1.3K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick nanobot if
- You weight community size — 50K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick assistant-ui if
- You want the assistant-ui feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and assistant-ui fits your workflow better
About nanobot
English 简体中文 繁體中文 Español Français Bahasa Indonesia 日本語 한국어 Русский Tiếng Việt Discord · X · WeChat / Feishu nanobot 🐈 nanobot is an ultra lightweight, open source, self hosted personal AI agent framework written in Python. It runs in a WebUI, terminal, or chat apps and combines tools, long term memory, MCP integrations, model routing, multi agent delegation, scheduled automation, and an OpenAI compatible API in a small, readable core. Start Here What can nanobot do? nanobot is a self hosted personal AI agent runtime. It can: run in a browser WebUI or terminal connect to Telegram, Discord, Slack, WeChat, Email…
read the full nanobot overview →
About assistant-ui
Product · Documentation · Examples · Discord · Contact Sales The UX of ChatGPT in your React app 💬🚀 assistant ui is an open source TypeScript/React library to build production grade AI chat experiences fast. Installation The fastest path is the CLI, which scaffolds a Next.js app or adds the styled components to an existing project: Or install the packages directly: Usage useChatRuntime connects to the Vercel AI SDK out of the box. Swap it for useLangGraphRuntime , useDataStreamRuntime , or any custom runtime to integrate with your own backend. What you get Composable primitives : build any chat UX from Thread…
read the full assistant-ui overview →
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Frequently asked questions
Is nanobot or assistant-ui more popular?
nanobot has 49,806 GitHub stars and assistant-ui has 12,936. nanobot has the larger community by that measure.
Are nanobot and assistant-ui free?
Both are open source. nanobot is licensed under MIT and assistant-ui under MIT. Neither carries a licence fee.
What is the difference between nanobot and assistant-ui?
nanobot is written in Python and assistant-ui 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, nanobot or assistant-ui?
Choose nanobot if you want the larger community (49,806 stars) or its MIT licence terms. Choose assistant-ui if its feature set, stack or MIT licence fits better. Both are self-hostable.