head to head · open source
Open WebUI vs chatgpt-android
Open WebUI has 152,426 GitHub stars, 22,301 forks, 294 open issues and last shipped today. chatgpt-android has 3,869 stars, 447 forks, 27 open issues and last shipped 9 months ago. Open WebUI leads on adoption by 3,840% (152,426 vs 3,869 stars). Open WebUI is written in Python under a custom or non-standard licence; chatgpt-android is written in Kotlin under Apache-2.0. Open WebUI has attracted 15% as many forks as stars, chatgpt-android 12%. Open WebUI was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| Open WebUI | chatgpt-android | |
|---|---|---|
| GitHub stars | ★ 152K | ★ 3.9K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Kotlin |
| Last push | 2026-09-18 | 2026-01-03 |
| Forks | ⑂ 22K | ⑂ 447 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Open WebUI if
- You weight community size — 152K stars and counting
- You want the Custom / other 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 Open WebUI
Open WebUI is a self hosted, open source AI interface that unifies access to local and cloud based large language models. It runs entirely in a web browser and supports Ollama for local model hosting alongside any OpenAI compatible API, including services like LMStudio, GroqCloud, Mistral, and OpenRouter. Built in Python, it functions as a drop in replacement for proprietary AI platforms, giving users full control over their model infrastructure and data.
read the full Open WebUI overview →
About chatgpt-android
ChatGPT Android demonstrates OpenAI's ChatGPT on Android with Stream Chat SDK for Compose. The primary objective of this repository is to showcase the following: Demonstrating OpenAI's chat APIs. Creating comprehensive UI elements utilizing Jetpack Compose. Incorporating Android architecture components using Jetpack libraries such as Hilt and AppStartup. Executing background tasks efficiently through Kotlin Coroutines and WorkManager. Seamlessly integrating chat systems via the Stream Chat SDK for Compose to facilitate real time event handling. 📷 Previews 🛥 Stream Chat & Video SDKs ChatGPT Android is built with…
read the full chatgpt-android overview →
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Frequently asked questions
Is Open WebUI or chatgpt-android more popular?
Open WebUI has 152,426 GitHub stars and chatgpt-android has 3,869. Open WebUI has the larger community by that measure.
Are Open WebUI and chatgpt-android free?
Both are open source. Open WebUI has no licence declared in this registry, and chatgpt-android is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Open WebUI and chatgpt-android?
Open WebUI 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, Open WebUI or chatgpt-android?
Choose Open WebUI if you want the larger community (152,426 stars) or its Custom / other licence terms. Choose chatgpt-android if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.