How to Build an AI-Powered App Without Coding: A Step-by-Step Guide Using Nebius AI Studio

Build your own AI-Powered App with Nebius AI studio:

I go step by step to show how I built an AI-powered app using top open-source models. I made it super simple, even if you’re not technical. This app has a chatbot, a text-to-image model, and a vision model that can look at images and describe them. Normally, building something like this would take weeks and a lot of coding, but I did it in under an hour using Nebius AI Studio and Lovable.

I show how to get your API key, keep it secure with a backend, and connect everything together using Lovable’s chat tool. You’ll see how I test each part of the app—chat, image generation, and image analysis—and how I add a setup page to choose models and add system prompts.

This helps me build powerful AI tools fast without needing to worry about servers or writing a ton of code. If you’ve got an idea and want to launch it quickly, this is a great way to do it.

The Challenge of Building AI Apps

Creating AI-powered applications has traditionally been a highly technical and expensive process. Between server setup, coding, and infrastructure costs, most people found it overwhelming — especially for small projects or early prototypes.

But thanks to new platforms and open-source tools, it’s now possible to build complex AI apps in under an hour — without deep programming knowledge.

In this article, I’ll show you how to create your own AI playground app featuring:

  • A custom chatbot
  • A text-to-image generator
  • An AI vision model that can analyze images

All of this will be powered by Nebius AI Studio, an innovative platform that makes the world’s best open-source models instantly usable.


Why Nebius AI Studio Changes Everything

Nebius AI Studio is a platform that allows you to connect to state-of-the-art open-source models with a single API key.

Instead of spending weeks managing servers or dealing with scaling issues, you can focus entirely on your frontend experience — while Nebius handles the heavy lifting behind the scenes.

Key Benefits:

  • Access powerful open-source models from companies like OpenAI.
  • Get started in minutes — no server management required.
  • Scale your app effortlessly as it grows.
  • Pay a fraction of the cost compared to closed-source models.

To get started, you’ll only need to generate one API key inside Nebius AI Studio. With it, you can access all available AI models — text, image, and vision — directly inside your application.


Step 1: Designing the App Frontend with Lovable

To quickly design and assemble the app interface, we’ll use a tool called Lovable.
Lovable allows you to describe your idea in plain English — and it automatically generates a working app prototype.

For this project, we’ll ask Lovable to create:

  1. A Chatbot page (for text-based AI interactions)
  2. A Text-to-Image page (to generate pictures from prompts)
  3. A Vision AI page (to analyze and describe images)

After a few minutes, Lovable will automatically generate a fully functional interface for all three features.

💡 Tip: If you’re a developer, you can also use alternatives like Replit or code your frontend manually. Lovable just makes it faster and visual.


Step 2: Connecting the Backend Using Supabase

Next, we need a backend to securely store our API key.
Never expose your Nebius API key in frontend code — users can easily view it in their browser.

Inside Lovable:

  1. Connect your project to Supabase, a simple backend service.
  2. Store your API key securely in the database.
  3. Connect the Supabase backend to your AI Studio account.

Now your AI key is hidden safely, and you can access it securely within your app.


Step 3: Linking AI Studio Models to Your App

Once your backend is connected, it’s time to power your app with real AI.

Using Lovable’s chat feature, simply instruct it to:

“Connect the chatbot, text-to-image, and vision models from AI Studio.”

Lovable will automatically:

  • Add the necessary model endpoints.
  • Configure secure access using your stored API key.
  • Generate a complete implementation plan.

When it’s done, your app will now be fully AI-powered — ready to generate text, images, and image analysis results instantly.


Step 4: Testing the App

Now, let’s test your new AI Playground.

  1. Chatbot: Ask a question like, “Help me draft a professional email.”
    The app uses GPT-OSS 12B, an open-source model by OpenAI that performs similarly to GPT-5 — but at a fraction of the cost.
  2. Text-to-Image Model:
    Type a prompt such as “a kitten sitting on a kitchen counter” and generate an image in seconds.
  3. Vision Model:
    Upload an image and watch the AI describe it accurately using natural language.

⚡ The entire process happens in real-time — fast, efficient, and server-free.


Step 5: Customizing the App with System Prompts

To improve responses, you can add system prompts — hidden instructions that guide how your chatbot behaves.

For example:

You are a helpful AI assistant. Always respond in plain text without using markdown or special characters.

These instructions define the chatbot’s tone, style, and formatting rules.
You can also add a setup page in Lovable to easily switch between different models or modify prompts without editing code.


Step 6: Adding More Features

Enhance the user experience with small but powerful features:

  • New Chat Button: Start fresh conversations anytime.
  • Light & Dark Mode: Toggle themes with one click.
  • Admin Panel: Use Supabase authentication to lock setup settings behind a password.

Lovable handles these additions easily — just describe what you want, and it updates your app automatically.


Step 7: Publishing Your AI App

When everything is ready:

  1. Click Publish in Lovable.
  2. Run the security review to ensure your API keys and backend are safe.
  3. Get your public share link or connect your custom domain.

Your AI-powered app is now live and ready for users!


Conclusion: The Future of No-Code AI Development

Thanks to platforms like Nebius AI Studio and Lovable, anyone — even without coding skills — can now build professional AI applications in record time.

What once required weeks of setup and expensive infrastructure can now be done in under an hour, entirely online.

🚀 In short:
Build smarter, faster, and cheaper.
Use open-source models.
Focus on creativity, not complexity.

If you’re ready to create your own AI app, try Nebius AI Studio today — and experience the future of no-code AI development.

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