head to head · open source
nanobot vs koishi
nanobot has 48,372 GitHub stars, 8,548 forks, 775 open issues and last shipped today. koishi has 6,213 stars, 350 forks, 107 open issues and last shipped 23 days ago. nanobot leads on adoption by 679% (48,372 vs 6,213 stars). nanobot is written in Python under MIT; koishi is written in TypeScript under MIT. nanobot has attracted 18% as many forks as stars, koishi 6%. nanobot 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 | koishi | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 6.2K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2026-08-28 |
| Forks | ⑂ 8.5K | ⑂ 350 |
| 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 koishi if
- You want the koishi feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and koishi 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 koishi
Koishi is a cross platform, extensible, high performance chatbot framework written in TypeScript, aimed at anyone who wants to build and run bots across QQ, Telegram, Discord, Feishu, Matrix, LINE, mail and OneBot from one codebase.
read the full koishi overview →
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Frequently asked questions
Is nanobot or koishi more popular?
nanobot has 48,372 GitHub stars and koishi has 6,213. nanobot has the larger community by that measure.
Are nanobot and koishi free?
Both are open source. nanobot is licensed under MIT and koishi under MIT. Neither carries a licence fee.
What is the difference between nanobot and koishi?
nanobot is written in Python and koishi 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 koishi?
Choose nanobot if you want the larger community (48,372 stars) or its MIT licence terms. Choose koishi if its feature set, stack or MIT licence fits better. Both are self-hostable.