head to head · open source
chatbox vs Kai
chatbox has 41,814 GitHub stars, 4,253 forks, 1,290 open issues and last shipped 4 days ago. Kai has 1,255 stars, 185 forks, 127 open issues and last shipped 2 days ago. chatbox leads on adoption by 3,232% (41,814 vs 1,255 stars). chatbox is written in TypeScript under GPL-3.0; Kai is written in Kotlin under Apache-2.0. chatbox has attracted 10% as many forks as stars, Kai 15%. Kai 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
| chatbox | Kai | |
|---|---|---|
| GitHub stars | ★ 42K | ★ 1.3K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | TypeScript | Kotlin |
| Last push | 2026-09-16 | 2026-09-18 |
| Forks | ⑂ 4.3K | ⑂ 185 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick chatbox if
- You weight community size — 42K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Kai if
- You want the Kai 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 Kai fits your workflow better
About chatbox
Chatbox (Community Edition) is a cross platform desktop client for large language models, written in TypeScript and released under the GPL 3.0 license. It runs on Windows, macOS and Linux, and it connects to a range of providers including OpenAI (ChatGPT), Azure OpenAI, Claude, Google Gemini Pro, Ollama and ChatGLM 6B. The project lives in the AI interaction and interfaces ecosystem, where desktop chat front ends sit between a user and one or more hosted or locally hosted model APIs. The repository carries 41,767 stars and 4,251 forks across four years of history.
read the full chatbox overview →
About Kai
Kai 9000 is an Apache 2.0 licensed, open source AI assistant written in Kotlin that runs with persistent memory across Android, iOS, Windows, macOS, Linux, and the web, built for people who want a personal assistant that keeps its context and works on their own devices.
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Frequently asked questions
Is chatbox or Kai more popular?
chatbox has 41,814 GitHub stars and Kai has 1,255. chatbox has the larger community by that measure.
Are chatbox and Kai free?
Both are open source. chatbox is licensed under GPL-3.0 and Kai under Apache-2.0. Neither carries a licence fee.
What is the difference between chatbox and Kai?
chatbox is written in TypeScript and Kai 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, chatbox or Kai?
Choose chatbox if you want the larger community (41,814 stars) or its GPL-3.0 licence terms. Choose Kai if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.