head to head · open source
nanobot vs assistant-ui
nanobot has 48,372 GitHub stars, 8,548 forks, 775 open issues and last shipped today. assistant-ui has 12,217 stars, 1,185 forks, 207 open issues and last shipped today. nanobot leads on adoption by 296% (48,372 vs 12,217 stars). nanobot is written in Python under MIT; assistant-ui is written in TypeScript under MIT. nanobot has attracted 18% 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 | ★ 48K | ★ 12K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 8.5K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick nanobot if
- You weight community size — 48K 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
nanobot is an ultra lightweight, open source, self hosted personal AI agent framework written in Python, aimed at individual developers and small teams who want to run their own agent through a browser WebUI, a terminal, or chat apps instead of renting a hosted assistant.
read the full nanobot overview →
About assistant-ui
assistant ui is an open source TypeScript and React library, released under the MIT licence, for building production grade AI chat experiences quickly, and it is aimed at frontend and full stack developers who need the user experience of ChatGPT inside their own React application.
read the full assistant-ui overview →
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Frequently asked questions
Is nanobot or assistant-ui more popular?
nanobot has 48,372 GitHub stars and assistant-ui has 12,217. 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 (48,372 stars) or its MIT licence terms. Choose assistant-ui if its feature set, stack or MIT licence fits better. Both are self-hostable.