I am absolutely in love with chat GPT

5.5 Codex. I think it is currently by

far the best way to be building apps

with AI, even better than Claude code.

What I'm going to do in this video is

build out an entire application soup to

nuts using Codex. We're going to build

out the front end, the back end,

everything involved. AI functionality,

it's going to be sick. I'm going to show

you all the tips, tricks, secrets I've

come up with over the last week, as well

as show you my absolute best workflows.

If you stick with me until the end of

this video, you will be a master of the

number one AI vibe coding tool on planet

Earth right now. Plus have an entire

application that we're going to build

out together that you'll be able to use

for the rest of your life. It's going to

be sick. Even if you've never coded

before a day in your life, you need to

stick with me here cuz you're going to

build something amazing. This is going

to be so much fun. Now, let's lock in

and get into it. So, this video will be

all about action and building. No blog

posts, no tweets to read. Let's just get

right into the interface here. This is

chat GPT Codex. It's a free to download

desktop app. Go and hit the link below

and download it. There are many reasons

why you want to be using this right now

over Claude code. If you are paying $0

for AI, you can be using this to build

apps right now cuz Codex is included

with the free tier of chat GPT. In fact,

if you only want to spend $20 a month,

this is the one to get because they're

taking out Claude code from the $20 tier

of Anthropic at the moment. So, if

you're on a budget or even if you have a

ton of money to spend, I really think

this is the best app to be using right

now. There are so many nifty little

features we're going to go through in

here that are really, really cool that

make Codex stand out so well. But,

here's what we're going to build today.

I think it has never been more important

to be investing right now. So, what

we're going to do is we're going to

build out an entire stock investment

app, one where we can track our

investments, research other investments,

look at charts, things like that. I

think it's so important to be investing.

So, what we're going to do is build an

entire application front to back through

Code X. I'm going to show you how to

build out the database. I'm going to

show you how to build out the front end.

I'm going to show you all the tips and

tricks. We're going to use Image Gen,

all that. So, let's just get right into

it. What we're going to do is we're

going to create a new project here. So,

this is Code X. Let's click this button

right here for add new project. I'm

going to say start from scratch. Now,

there is a plan mode inside of Code X,

but it's not really necessary. They

really made this app for you to build in

flow. So, let's do this and we're going

to start right off the rip with a really

cool trick that you really can't do in

any other app. And that is design the UI

using their new Image Gen model. Chat

GPT just released Image Gen 2, which I

think is by far and away the greatest AI

Image Gen model on planet Earth. And

what's really cool about it is it's

fully integrated into Code X. So, we can

design out our front end before we start

building. So, let's do this. I'm going

to put this prompt down below. Feel free

to pause right here, download Code X and

build this alongside with me. I really

think that's the best way to experience

my videos is to build alongside with me

here. So, here's the prompt. I want to

build out a full stock investing app.

This is an app where I can enter

companies or tickers, then see their

charts, get the latest news, do

research, and save companies to my

portfolio. First, I want to design the

user interface. Can you generate five

options for clean and simple, but really

visually powerful interfaces using the

Image Gen model? For this, we are going

to use medium. For a vast majority of

things we do in Code X, we're just going

to use the medium intelligence. Chat GPT

5.5 is extremely smart. There's no need

to go extra high for everything. When

we're in Cloud Code, we use like the

highest intelligence level for

everything. Here, it is not necessary

because GPT 5.5 is so smart. If you are

on the $200 a month pro plan, you can

use fast for pretty much everything cuz

you get a ton of usage. This is one of

the strengths of chat GPT codex. You get

so much usage with all their plans.

Claude, they constantly are lowering the

plans. So, I'm using fast but if you're

on anything lower than the $200 a month

plan, you can probably just go with

standard so you get a lot more usage.

So, we're going fast and medium. Let's

do this. We're going to hit send on

here. We're going to get into so many

cool things after this. So, let's hit

send and what it is going to do first is

generate us some interfaces. What's

great about this is this is going to

lead to much better UIs because we are

going to be able to go in and make sure

everything fits to our liking with this

image gen model. It's such an advantage

for codex over all the other AI tools

right now that this is fully integrated

in this image gen stuff. It's a built-in

skill. I'm also later in this video

going to go over a few other skills that

I think are really, really, really cool

that'll blow your mind. So, stick around

for that as well. We'll also go into

some multitasking stuff in a sec. All

right. So, it generated five interfaces

using their image gen model. Let's check

this out here. So, we have the charts.

Okay, research, latest news. That look

pretty clean UI. I like that. Okay,

basically the same thing but in a dark

mode. I think I'm in dark mode. I'm kind

of a dark mode guy. Let's check these

other ones out. Okay, this one's

interesting and kind of shows the

different sectors every stock is in. I

like that. Ooh, this one's nice cuz it

shows you your portfolio alongside

everything as well. I wanted emphasis on

saving my portfolio. So, I think this

one's the winner. Now that we've decided

which interface we want, let's go in

here and let's say I like the last

interface, the one that also shows the

portfolio. Let's build that out. Let's

take this up a notch. Let's also

implement a database so that we can

store our stock portfolio in there as

well. If you are serious about building

out real applications, starting a

business, making tons of money, you need

to understand the full stack, the front

end to the back end. Right now, my

favorite database, and this isn't

sponsored at all, is Convex. Convex is a

fantastic database tool. It has a

incredibly generous free tier. I've

built out like 50 applications, all

built on Convex. I still haven't spent a

single dollar on it. So, we're going to

say this, I want to have a database on

Convex where we will store our stocks.

What I'm going to do, just so it knows

which one it's doing, I'm also going to

screenshot it, and I'm just going to put

it in there just to be safe. We're going

to say, "Please start building this

out." And I'm going to hit enter on

that. That's going to get to work. Now,

I'm going to show you some of the other

incredible things we can do in Codex,

starting with the multitasking. So, one

of my favorite parts about Codex is it's

designed around multitasking, having

multiple agents doing a whole bunch of

things at once. So, while this is going,

we're going to go over here into new

project seven where we're at, we're

going to say, "Start a new chat." So,

we're starting a new chat, and here's

what we're going to do. We're going to

use the Remotion

start actually building out the

marketing for this app. So, say you

wanted to put this app online, and you

want to start making money with it,

right? You want to start getting

customers, things like that. Well, we

got to build marketing, right? We got to

have some sort of launch video. So, what

we're going to do is we're going to use

the Remotion skill to build out the

marketing launch video for this app. So,

for those who don't know, there's

actually a plugin store in here. This is

the plugin store. Couple quick ones you

want to implement real quick. Make sure

to install browser use, that's that

first one up here. Get computer use in

there as well, cuz there's a lot of

other cool things you can do in there.

You want to get these two, and then if

we scroll down here, you are going to

find a few design skills. The one we're

going to use is Remotion. This is the

coolest skill for design. This will

allow us to actually create motion

graphic videos for marketing and launch

videos and things like that. So, get

that installed. It's one click, you get

it installed. So, we're going to go back

into this new chat and we're going to

say use the @remotion

skill to build a launch video for our

stock investment and tracker app. It

should show off being track and research

stocks.

And I'm going to hit enter on that. And

now our marketing agent is off and

running, right? So, now we have one

agent building out the app. Then we have

another agent, our marketing agent,

that's going ahead and building out our

marketing video. And this is really the

way you want to think about Codex, which

is how can I get many things done at

once? How can I spin up multiple agents?

You get so much usage out of ChatGPT.

ChatGPT's usage is like a hundred times

higher than Claude Codes, and their

product manager like resets limits every

five minutes. So, you basically

unlimited usage. Not really, don't quote

me on that. But you have really, really

high usage. So, I'm always trying to get

as much done as humanly possible. I'm

trying to always spin up multiple

agents, have them working at all times,

have this going in the background, and

just constantly get things done. When

I'm sitting on my couch late at night

and I'm playing Pokémon on my Game Boy

Color, I have Codex going on the side

here. I'm just going to approve every

couple minutes, approve every couple

minutes as it's doing things all the

time. I always want my Codex going and

building things out for me. So, now

going back to our main agent here is

working building out the app. If you

don't have a Convex account yet, it's

going to set stuff up for you, but you

probably want to create an account with

Convex. So, go to convex.dev and create

a free account there. Again, I've been

using it for a very long time and I have

not paid a cent ever, so it's completely

free and easy to set up. And let's do

one thing also, let's take it up a notch

here. Codex has some amazing computer

use skills, so let's take advantage of

that as well. Let's say this, open up a

browser on my computer and find the best

AI stocks for me to invest in. Let me

say at computer use. I'm going to hit

enter on that. I'm going to hit enter

and this is going to show you some of

the really cool things they can do in

here. They're clearly like taking things

they learned from open claw and

implementing into codex. They want like

codex to be like your open claw. So

we're going to do this. We're going to

hit enter on this. It's actually going

to pop open a browser on my computer and

start doing research to find the best AI

stocks. So we have one agent building

out our app which you can see over here.

It's idle so it's done building. We have

another agent building out our

marketing. It needs approval so we have

that little green button right there.

And then we have another agent is doing

research for us, right? And so if you're

building an app this could be things

like researching your competitors,

researching just ideas for your app,

whatever it is. You want like a

researcher agent going, you want a

marketing agent going and you want a

developer agent going. So we're just

going to hit allow here so it can pop

open Google Chrome. Look at this. I

brought over my Google Chrome. It's

searching for best AI stocks to invest

in 2026. Nvidia, Microsoft, Broadcom,

TSMC, ASML. I own Nvidia, Microsoft,

TSMC and ASML. Maybe I got to get

Broadcom as well. And it's going and

it's going now in this separate browser

on my second monitor and searching for

stocks to invest in. So when we set up

our app in a second we can just pop

these in and we have our tracker going.

So I'll move this over. I'll let codex

keep doing work over here. You can even

track everything it's doing here. We'll

let this work. This is the beauty of

multitasking. Again, let's come back

over here and let's approve remotion

skill. So yep, go ahead, use the best

remotion skill. And then let's go into

our app that we're building out here. I

kind of feel like a CEO, right? Watching

all my agents work, watch all my

employees do things for us. Let's do

this. Okay, boom. It looks like it's

done. Here's another beautiful part

about codex. I'm going to hit open here.

It's got a built-in browser, right?

Built-in browser right in the codex.

Let's go into full screen mode here.

This is looking beautiful. It looks just

like a screenshot. This like is actually

looking pretty good. You can see

financials, company research, portfolio.

Now, I'm pretty sure this is all demo

data. What we're going to do is we're

going to go back into our agent and

start building this out so things work

and everything's live. So, we'll do that

in a second, but just from a UI

perspective, let me do this. This is

kind of the mini version. Let's look at

the full screen version here in my full

browser. Yep, that's looking good. You

get the latest news, track your

portfolio. I mean, this looks pretty

much exactly like the screenshot. Let's

do this. Let's start implementing real

data here. So, let's let's find some

APIs we can use so we can get live stock

data in here. What's really amazing in

here as well as you can edit your app

through the in-app browser. And what I

mean by that is if I want to come in

here and I want to say annotate, and

maybe I say add a dark mode button that

makes the entire app dark mode. And I

hit send on that. What it's going to do

is it's going to add that button where I

annotated based on where I'm editing

here, right? So, now it's going to add

that dark mode button. So, you can do

live editing with this annotation

button, which is so sick. Again, no

other vibe coding software on planet

Earth has that right now. And as I'm

talking to you, you can see it's popping

in already and it'll probably work. This

in-app browser is so sick. So, I'm

building out my own startup right now.

I'm building out Henry Intelligent

Machines. And what's great is is like

every prompt I give it to build

something, it pops open this browser and

it tests itself. This is a strength of

Codex I'm not seeing anywhere else is

its ability to test itself. And so,

it'll build things out, it'll open this

browser, and it'll click around and try

things out, which is really amazing. So,

you can be a lot more confident as it's

building that it's actually making

working code for you. All right, looks

like it's done. Let's test it out of

Boom, hit dark and it works just like

that. Look at that. That is amazing. All

right, let's keep building here. Let's

get some real data. So, now I want to go

in and we're going to step by step going

in through here. Let's hide the browser.

You have two options here. If you're

like very confident in what you're

building, you can just go on to the next

thing and say, "Hey, let's build this."

But, one thing I really like to do, even

if I am confident in what I'm building,

is reverse prompt. It's something I

talked about a hundred thousand times in

all my videos. It's something you should

be doing 10x more. And that is pausing

and asking the AI what it thinks you

should be doing at any given time. So,

let's do this. Let's reverse prompt

right here. What do you think should be

the next few things we build out? Even

though I know I want to start pulling in

live data, just out of curiosity, I want

to do a temperature check with the AI to

see what it thinks. Cuz again, this is

super intelligence. This AI is way

smarter than us. So, we should be

leaning on it a ton for decision-making.

So, I'm going to hit enter on that.

Let's see what Codex has to say about

this. By the way, as this goes, if you

learn anything so far, make sure to

leave a like down below, subscribe, and

turn on notifications. All I do is make

amazing videos about AI. Also adding a

ton of videos about Codex into the Vibe

Coding Academy. I do live boot camps

there. So, if you want to come in, ask

me questions, chat about it, feel free

to join that down below. Number one

community in AI. Let's see what Codex

had to say here. So, one real stock

search and company look up, live price

and chart data, portfolio model upgrade,

company research. Okay, these are all

really good. What I want to do is I

actually want to start with live price

and chart data. So, let's do that. Can

we start with live price and chart data,

please? Please find a simple, free price

API. I'm going to hit enter on that. And

it is going to start going and building

out the live data in here. As that's

going, looks like another agent

finished. Build stocks. We got to get an

approval going here, so let's hit yes on

that. So, it's still building out the

video. This is going to be so sick, this

launch video. I'm really excited to see

it. I think it's going to blow you away.

Let's see how our stock research is

doing. Looks like it finished

researching in Google. Uh Nvidia number

one, no surprise. Microsoft number two.

It's also got Google and Amazon. Okay,

so we have a bunch of stocks we now can

add to our portfolio. That is great.

We'll come back in here, give another

approval to remotion. We'll come over to

our other agent, see what it's building

out here. This is like what makes it

fun. It's like it almost feels like a

video game in a way, where you're trying

to level up, you're sending out your

troops. If you've ever played StarCraft:

Brood War, maybe I'm dating myself a

little bit here, but I was the biggest

StarCraft: Brood War player, and I

almost feel like I'm doing like a

Zergling rush, sending out a bunch of

Zergs right away to do a whole bunch of

little things. It really, really is

amazing. If you played StarCraft: Brood

War, by the way, let me know down below.

I want to see how many other Unk Nerds

there are in this video. All right,

let's see what we got here. It's looking

for a free API for data, that's great.

All right, looks like we're using the

Alpha Vantage API. It's actually one

I've used in the past. Let's sign up for

Alpha Vantage. By the way, even if

you're not interested in stocks or

investing, you can still use all the

things I'm teaching you here to build

whatever app you want. These are all

transferable skills, the multitasking,

the marketing, the research, all of that

you can use as an any idea you want.

These are all foundational skills for

building apps. So, I'm on the Alpha

Vantage site just real quick. Let's put

in our email here. Going to take that

command for Convex, paste it in here,

and then we're going to take our API

key, and we're going to put it in right

there at the end. All right, looks like

it's set. Let's test this out. Let's see

how it worked. Before we check on the

live data, let's just go back to our

marketing agents. We got about like our

little marketing employee here. See what

kind of video they came up with us.

Looks like they're done. Output stock

launch. Let's do this. Oh, they came up

with a whole bunch of assets for us, but

let's look at the video. Let's see what

they got for us. All right, I'm going to

pull this open here. Let's see what we

got. All right. 40-second launch video.

Here we go. Track every stock research

with intent. Look how nice that is.

That's the actual UI from our app.

That's the actual UI. I went in and took

the UI. Wow, find a company and keep the

context close. These are nice motion

graphics.

Compare the story, the numbers, and the

calendar. Look at the way things come

in. And it's the exact UI. This would

have cost me tens of thousands of

dollars and days and days and days of

work to hire someone to do this for me

before. I'm now a one-man wrecking

machine. Codex just built this all out

for me. A calmer way to decide. I love

that. This is so sick. When I'm ready to

launch this, I just pop this video into

Twitter and boom, we're starting to get

customers. That's amazing. Our marketing

agent came through. Look at this. Even

came up with a whole bunch of assets for

us. Look at this. This is really cool.

Wow. Very nicely done. All right, so

let's check this out. Let's see if the

data is live. Google 349.57.

I think that's real. Let me check

Robinhood app. Yep, that's real. Let's

see. Let's scroll down here. Okay,

Nvidia 214. Yep, that's real. Data is

live. That's amazing. We're now getting

full live data. All right, let's build

this out next. Let's actually edit our

portfolio so we can add stocks to it,

save it, and maybe even put in how many

shares we own of it so we can track our

full portfolio value. So, let's do this.

Let's make our portfolio real. Allow me

to add and save stocks to it and put in

Then I hit enter on that. That's going

to get to work. As you can see, I have

spelling mistakes in there. The good

news is with AI, spelling doesn't

matter. It'll just figure it out. So,

you can just hit enter anyway. And there

it goes. It's going to start building

out our new portfolio section in here.

Now, while that goes, let's talk about

some more features in Codex I absolutely

love. Let's talk about automations. We

have automations in here. This is again

kind of an open claw type feature where

it's going to run these commands on a

regular basis for you completely

autonomously. One thing I like to do in

here is I scroll down to code quality.

This is going to be an automation that

scans our recent commits in GitHub on a

regular basis to see if there's any bugs

in there. So, we're going to set that

up. Let's click on that. It's going to

show us the template for what we're

working on here, for what the

automation's going to do. It's basically

going to go through all our commits from

the last 24 hours and see if there's any

bugs or any way it can improve the code

for us. You want to do this after you've

kind of set up GitHub. If you're not

familiar, GitHub online code repository,

it's where you can upload your code to,

have other people work on it as well.

You would go in here after you set that

up and create this automation, cuz then

it would go and check your GitHub every

24 hours. So, these automations are

really cool. You can do a lot of

different things in here. It doesn't

even have to be code related. If you

want to set up an automation where it

does stock research every 12 hours, you

can do that in here. You're taking

advantage of ChatGPT OAuth, so you get

tons and tons and tons of usage, which

is great. So, you can see here it's

built out the portfolio. It's testing

itself currently. This is one thing

Codex does really well, is it tests

everything it does very thoroughly. So,

it's actually adding stocks to our

Convex database by itself. Uh just to

see if it works. You can see it just

added that Tesla right there, live in

front of us. You give it prompts and you

just know that whatever it's building is

going to work. That's how good it is.

So, it's really amazing to see this.

>> All right, looks like it's all done

here. Let's start adding stocks. So, I

own ASML.

Let's put in some shares here. Let's say

I own 100 shares. Let's add it. And

boom, there it is. It adds it, gives me

the value, has the live price, updates

our stock portfolio. This gets stored in

our Convex database. So, even after we

shut this down, we stop the server, when

we boot it up again, all the data will

remain persistent. It will all remain

there, which is really amazing. Now, if

you want to take it a step further, we

can go back, we can say, "Hey, what are

the next tasks we should work on?" We do

a little bit of reverse prompting, and

it will give us the list of tasks there.

Tons other things you can do in here, by

the way. I like to do full access, so

it's totally up to you, but this is so

good that I have full trust over it

having full access, just building things

out without needing permission every 5

seconds. From a model perspective,

unless you're doing a gargantuan task,

medium's always going to work well. You

can even go low. If you do a gargantuan,

really complex task, you can go higher,

extra high. Now, from here, if you want

to continue building out this portfolio

app, you can go and choose one of these

features to build out. And then, as I

just showed you here, go, keep building

out. If you want to multitask, we can

even spin up more sessions, and then we

can have one put in our cost basis, we

can have another one go in and improve

chart reliability, and we can have

agents, multiple agents spinning up and

building out all these features

simultaneously. So, it makes Codex so

cool, cuz it's really built for this

type of multitasking. Now, the question

I get all the time, this or Claude code,

this or Claude code, which one should we

be using? I think GPT 5.5 is the best

model on planet Earth right now, and I

think Codex is the best desktop

application put together. I think it's

magical. But, more importantly than all

of that kind of, honestly, is the fact

that OpenAI doesn't make these models

stupider. It seems with Anthropic, a lot

of their models get stupider over the

length of their life cycle. I've never

experienced that with ChatGPT. So, you

can be confident these models will

remain smart. And then, even more

importantly than that, usage. It feels

like Anthropic keeps lowering the usage

limits. I don't know what that's about.

ChatGPT, though, the usage is always so

high, and they're always resetting

limits. So, I never am worried about,

"Oh, am I using it too much today, this

week, whatever?" You can always just

keep using it. OpenAI is incredibly kind

when it comes to usage limits with

ChatGPT. So, that's amazing. I live

stream 3 days a week, Monday, Wednesday,

Friday, 11:00 a.m. Pacific. I use these

tools, Codex, Cloud Code, Open Claw,

Hermes Agent, all those. Make sure to

subscribe and turn notifications that.

Leave a like if you learned anything at

all. My challenge for you is keep

building this out. Keep going from here.

Spend a few hours just massaging this,

adding any features you want. Then, if

you want to put it live, say, "Hey, put

this live for me on Vercel." It'll put

it live on the web, then all your

friends can use the app, and you're good

to go. If you want to see me build this

live, I do live vibe coding sessions

every single Thursday in the Vibe Code

Academy. Link for that is down below, as

well. Hope this was helpful. I am truly

grateful to you for watching my videos,

learning something from them. It means

the entire world. Can't wait to see you

in the next one. See you then.