All models except Gemini 3 work normally.This problem has been going on for over 12 hours.
Thank you for your reply. I genuinely didn’t realize I was currently in an playground, but several of my previous projects were also built using playground without any issues. Furthermore, based on the 250,000 token cap you mentioned, my project only has 200,000 tokens. Regarding the browser issue, I’m using Brave in the screenshot, and I’ve also tried using Edge, Google Chrome and ungoogled chromium on my windows pc, but neither worked.
Why was your comment silenced before? I deleted my previous response as it said you were muted. I deleted it because I thought I said something wrong 
perhaps where you are a new account, I suppose.
But on with your issue, have you tried it in build yet? Apart from that, I don’t see anything wrong with the code, but maybe try to let it build the code itself by description instead of pasting the code block; see if it works in build first. Glad to see your message got through, though, and welcome to the forum. Keep me updated 
I’m not the most experienced user, as I am learning as well, but I will gladly assist with the trial and error. I’ll try to run it in build on my end and see what it makes, and I’ll drop it back here with the results. Best of luck!
~Cmd.Proton🖖
I tried the build mode, but it seems to only be able to create web applications.
Have you tried this with Android studio or idx/firebase? you are using kotlin for this so are you trying for a mobile app with Android?
On the AI studio only web-based it only shows you previews for web-based applications but it can build anything here is a breakdown
CMD.Protons Guide to “Should I use AI Studio for this particular project.”
AI Studio creates Universal Code but only offers Web-Based Previews.Here is exactly how the “Build Mode” limitations work
The “Build” panel (Vibe Coding) is essentially a web container.
If you build a Web App: It writes the code and renders it instantly because your browser (Chrome) is the runtime environment.
If you build an Android App: It will write perfectly valid Android code, but the preview window will likely just show you the raw code or a text explanation. It cannot launch a virtual Android phone inside that specific tab to show you the app working.
2. It Can “Build” Anything (Code-Wise)
You can absolutely use AI Studio to build non-web projects, you just lose the “instant preview” magic:
Mobile Apps: It can write the full MainActivity.kt for an Android app. You just have to copy-paste it into Android Studio yourself to run it.
Python Scripts: It can write complex Python automation scripts. (Note: It can actually run some Python code for math/data analysis using a feature called “Code Execution,” but it won’t build a graphical interface for it).
Arduino/Hardware: It can write C++ code for a microcontroller, but you obviously can’t test it without the hardware.
3. The “Secret” Tool for Mobile Previews
If you want what you are describing—a browser-based tool that can actually run and preview Android apps without installing anything—you are looking for a different Google tool called Project IDX (recently integrating into Firebase Studio).
What it is: It looks like VS Code in a browser.
What it does: It has cloud-based emulators. You can ask Gemini to build an Android app, and it will spin up a virtual Android phone inside your web browser so you can click buttons and test it live.
~Cmd.Proton🖖
Hi @cafe_internet,
Welcome to the AI Forum! Thanks for flagging the problem.
Can you please confirm, if you are still facing this issue.