# Entry
OpenAI Codex is one of the most useful tools for creating software using artificial intelligence. Instead of just asking for code, you can utilize it to plan features, edit files, fix bugs, connect tools, and turn ideas into working designs faster. If you’re fresh to Codex, start with this tutorial first: Full OpenAI Codex Tutorial in 2026 | Using the Code from scratch. It shows Codex working on a real project from start to finish. You’ll see how to issue instructions, improve your application step by step, and utilize the Code like a coding partner. Once you know the basics, these five design tutorials this is a good way to see what you can build with the Codex.
# 1. Create your first app in minutes
This seminar is the best to start with. Shows you how to build a elementary application step by step using the Codex. We focus on making things work quickly and without excessive complexity. You can utilize this video to understand the basic workflow: describe what you want, let Codex generate or modify the code, review the output, test the application, and continually improve it with subsequent prompts.
# 2. Building a mobile application based on OpenAI Codex
This seminar is useful if you want the Codex to be used to build mobile apps rather than a basic web app. The video shows how to create a Swift iOS app with Codex using tools such as Xcode and the Codex desktop application. The project is particularly engaging because the app itself is designed around a conversational “vibe coding” experience, where users can generate and host applications using natural language. For beginners, the most critical takeaway is how Codex can support a more convoluted development workflow involving mobile interfaces, app structure, local tooling, and iterative feature building.
# 3. Building an AI startup in just a week
This video it basically involves using Codex to go from a elementary idea to a full startup-like product in 7 days. They start with a elementary idea and utilize the Code to turn it step-by-step into a working web application. Along the way, they build core features, solve problems, and continually improve the product. The main focus is on how Codex can support speed up the entire app development process from idea to something useful.
# 4. Vibe codes a complete 2D beat ’em up game from scratch
This is the most fun project on the list. The guide shows you how to build a complete 2D fighting game from scratch using the Codex, Phaserand image generation tools. This is a great example of how Codex can be used beyond established productivity apps and dashboards. You’ll see how AI can support with game mechanics, characters, movement, graphics, and the overall structure of a browser game. For beginners, this project is useful because it makes coding more inventive. You can experiment with hints, change your playstyle, add fresh characters, and see how Codex handles interactive features.
# 5. Create a full stack Airbnb clone
This is one of the most complete design tutorials on the list. Includes creating a full stack Airbnb-style clone using the Codex, Exhibition, React natively, StripeAND Supabase. The app acts as a elementary vacation rental platform where users can browse places, view details, and go through the basic booking process. The main idea is to show how Codex can support you build full-stack applications step by step, including mobile screens, backend data, authentication or database workflows, and payments.
# Summary
These projects show how versatile the OpenAI Code can be. You can utilize it to build a elementary first app, a mobile app, a startup prototype, a full stack clone, or even a 2D game. The best way to learn is to start petite, test often, and treat Codex like a programming partner that still needs clear instructions and manual review.
Kanwal Mehreen is a machine learning engineer and technical writer with a deep passion for data science and the intersection of artificial intelligence and medicine. She is co-author of the e-book “Maximizing Productivity with ChatGPT”. As a 2022 Google Generation Scholar for APAC, she promotes diversity and academic excellence. She is also recognized as a Teradata Diversity in Tech Scholar, a Mitacs Globalink Research Scholar, and a Harvard WeCode Scholar. Kanwal is a staunch advocate for change and founded FEMCodes to empower women in STEM fields.