How to Vibe Code an Entire App with ChatGPT-5 (Step-by-Step)

Did you know you can vibe code an entire app using ChatGPT? Well, now you know. When ChatGPT-5 initially launched, OpenAI's team claimed GPT-5 is their best model yet, and they showed several coding demos, including vibe coding demos. So, I finally decided to test it. How good is it actually?

We have covered vibe coding a lot, and to give you a brief overview of it. Vibe coding is a new way of software development where, instead of writing lines of code, you just tell AI your vibe (a detailed description of your product idea) and the AI vibe coding tool builds it for you.

There are several dedicated vibe coding tools available right now, like Lovable^*, Base44^*, Hostinger Horizons^*, and more.

Now, if ChatGPT is claiming to be able to vibe code apps without you needing to leave the app. First of all, that's an insane productivity boost, and secondly, how good will it be? In this article, I will test GPT -5's vibe coding skills and show you step-by-step how you can vibe code a productivity app using ChatGPT-5.

How to vibe code a productivity app using ChatGPT-5:

First of all, let's make the vibe clear. Before you start talking to the AI, you need to know what you want to build. As for this example, we want to build a productivity tool combining project, product, and task management in one.

Step 1: Visit ChatGPT and craft the right prompt. Your prompt doesn't need to be perfect; it just needs to be clear so the ChatGPT-5 can understand the vibe you are going with.

Prompt: Create a beautiful, highly interactive web app that helps me be more productive.

• Kanban-style work progress tracker.
• Give me reminders to finish tasks.
• Includes a variety of features like a calendar and notes app.

One feature should be an AI-powered feature to help me find information within the app itself without me needing to leave it. It should also not save chat history once a new chat has been opened.

Think before answering. Render everything in canvas.

(You can copy and paste the above prompt and modify it to your own needs.)

Step 2: Once you are happy with your prompt and feel like your vibe has been clearly put to words, submit it.

• For this example, I will be using ChatGPT-5 Thinking, which makes ChatGPT think for longer to get you better results.

Step 3: If you also use ChatGPT-5 Thinking, you will notice ChatGPT will think and plan everything in detail before taking you to Canvas mode.

• ChatGPT-5 wrote almost 650 lines of code in less than 4 minutes, excluding the initial 1-minute thinking time.
• An experienced developer could take a few hours to days coding that many lines of code.

Step 4: Once ChatGPT finishes coding, click on Run Code to test the AI vibe-coded app. I personally liked the dark theme, and if you'd like to change it, you can simply ask ChatGPT to make it more colorful. This can also be done to update or modify other features.

Final Thoughts:

ChatGPT isn't what it used to be—it has evolved and gotten better over time, becoming more practical while still being fun and easy to use. To make ChatGPT your personal assistant, you just need to be clear and concise. Now that it is powered by GPT-5, you can expect even more power, intelligence, and better outcomes.

The next time you have an idea for a tool that would make your life easier, don't dismiss it because you don't know how to code. Instead, start a conversation with an AI tool like ChatGPT and see if you can bring your vibe to life. Vibe coding is the future of software creation, and it is as simple as having a chat.

_{*Affiliate: We do make a small profit from the sales of this AI product through affiliate marketing. This is not an official list; we have tried to mention as many tools as possible.}