head to head · open source
nanobot vs chatgpt-android
nanobot has 48,372 GitHub stars, 8,548 forks, 775 open issues and last shipped today. chatgpt-android has 3,870 stars, 447 forks, 27 open issues and last shipped 9 months ago. nanobot leads on adoption by 1,150% (48,372 vs 3,870 stars). nanobot is written in Python under MIT; chatgpt-android is written in Kotlin under Apache-2.0. nanobot has attracted 18% as many forks as stars, chatgpt-android 12%. 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 | chatgpt-android | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 3.9K |
| License | MIT | Apache-2.0 |
| Written in | Python | Kotlin |
| Last push | 2026-09-20 | 2026-01-03 |
| Forks | ⑂ 8.5K | ⑂ 447 |
| 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 chatgpt-android if
- You want the chatgpt-android feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Kotlin
- You evaluated both and chatgpt-android 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 chatgpt-android
ChatGPT Android is an open source Kotlin sample application that demonstrates OpenAI's ChatGPT chat API on Android inside a chatbot interface built with Jetpack Compose and the Stream Chat SDK for Compose, aimed at Android developers who want a working reference rather than a blank project.
read the full chatgpt-android overview →
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Frequently asked questions
Is nanobot or chatgpt-android more popular?
nanobot has 48,372 GitHub stars and chatgpt-android has 3,870. nanobot has the larger community by that measure.
Are nanobot and chatgpt-android free?
Both are open source. nanobot is licensed under MIT and chatgpt-android under Apache-2.0. Neither carries a licence fee.
What is the difference between nanobot and chatgpt-android?
nanobot is written in Python and chatgpt-android in Kotlin. 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 chatgpt-android?
Choose nanobot if you want the larger community (48,372 stars) or its MIT licence terms. Choose chatgpt-android if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.