source: kdnuggets: 5 fun projects using openai codex
level: technical
openai codex is a tool for building software with ai. you can use it to plan features, edit files, fix bugs, and turn ideas into working projects faster. if you are new to codex, start with a full tutorial that shows how it works on a real project from start to finish. you will see how to give instructions, improve the app step by step, and use codex like a coding partner.
the first project tutorial shows how to build a simple app in minutes. it focuses on getting something working quickly by describing what you want, letting codex generate or modify the code, reviewing the output, testing the app, and improving it through follow-up prompts. another tutorial covers building a mobile app with codex, using swift and xcode. the project is interesting because the app itself is designed around a conversational vibe coding experience, where users can generate and host apps through natural language.
other projects include building an ai startup prototype in one week, creating a 2d beat 'em up game from scratch using codex and phaser, and building a full-stack airbnb clone with expo, react native, stripe, and supabase. these projects show how flexible codex can be, from simple apps to games and full-stack platforms. the best way to learn is to start small, test often, and treat codex as a coding partner that needs clear instructions and human review.
why it matters: these projects help ai and data science practitioners learn to use codex for rapid prototyping and creative coding, speeding up development workflows.