Introducing the Codex app

Today, we're excited to introduce the Codex app.

Now you have one place to manage your projects and delegate real work to Codex.

Instead of juggling terminal windows, you get a single command center to run and supervise agents.

Let me show you how it works.

On the left, you can see my projects.

And for each of them, I can see the tasks that Codex completed, and some of them are running live as we speak.

On the right, this is the main conversation screen.

Let's start with this iOS app I've been building.

It tracks the ISS in real time and let's say I want to build new features for it.

I can type or better yet I can just speak my mind and dictate.

Add a new screen that shows the Astronomy Picture of the Day from NASA.

And that's it Codex is now taking care of all that for me and will figure out the right APIs to build it.

While that's running let's take a look at another project I've been meaning to migrate for a while.

Here Codex is updating all the dependencies and in that task it's even migrating from WebSockets to WebRTC for our speech-to-speech integration.

Now some of these tasks take a while, minutes if not hours, especially when you're working on a large codebase. And

that's a big shift in how we build software. Now you

software. Now you can supervise your agents and simply check in when they're done.

But let's go back to our first task.

Here you can see how Codex has been approaching the problem the steps it's taking and the progress as it goes. And

it's done. Now if I click on the right side I see the diff.

I can review exactly what changed in the Swift code, I can leave in-line comments for feedback, ask for another iteration or just merge if it looks right. Now if

I need to go deeper I can always open the changes in Xcode but in this case I'll just build and run the app directly from here.

Working with the Codex app makes building more fun, you know, I don't have to spend a lot of time editing code but rather just thinking about how to shape the app the way I want it to be. Let's bring the iOS simulator on screen

to be. Let's bring the iOS simulator on screen and here it is. I just gave one sentence to Codex and it built this entire new feature for me. Isn't that amazing?

Let's switch to another project I've been working on. It's a web-based fitness

working on. It's a web-based fitness tracker. Well for visual tasks like this

tracker. Well for visual tasks like this one I want to stick closer to the experience I'm building. So

by clicking on top right corner I can pop the conversation out like this and bring Codex with me and I can dictate, animate the bars to simulate progress and now I'll be able in a few seconds to see the changes apply live, it really feels like collaborating with a teammate and here we go. Now another powerful part of the Codex app is skills.

Skills let Codex connect to all of your favorite tools.

In fact, this app was actually implemented using the Figma skill, which automatically used MCP behind the scenes and set things up for me.

Let me quickly show you the design.

This is the homepage and if I click one component, for instance, you can see how the spacing, the textiles and all of that are defined right there.

So Codex has not been working from a screenshot.

It's actually reading the structure of the design file, including those variables to generate real code using our design system.

and that's why it matches the design so well.

Of course, you can also create your own skill for yourself or for your team so it can really fit your workflow.

Now, what's really powerful with the Codex app is that you can even turn these skills into automations.

Imagine you have tasks that you want running at a specific cadence.

Maybe that's triaging alerts from Sentry or bugs and tickets from Linear.

Well, you can now have that handled in the background while you focus on building.

There are many more features in the Codex app, including working with isolated environments called worktrees, so this way you can give each agent a copy of the code so you don't have to worry about conflicts or breaking your setup.

You can also delegate any task, especially the long-running ones, to Codex in the cloud with the exact same interface.

This was just a quick tour.

The Codex app is a brand new way to build software.

For me, it means spending a lot less time writing code and a lot more time creating, refining ideas and bringing them to life.

We can't wait to see what you build with it.