I Made Opus 4.8 and Fable 5 Build the Same App (RAW RESULTS)

So, I just gave the exact same prompt to
Opus48 and Claude's brand new flagship
model, Fable 5, across three builds, a
fully functioning e-commerce store, an
entire 3D world of famous art pieces,
and finally, an Age of Empires clone.
Same rules for both models, a single
one-shot output, no revisions, deployed
live in the internet. This is Opus 48
versus Fable 5 head-to-head, and the
results were, I'll be honest, not even
close.
First up, we are going to build out a
full e-commerce site. So, I actually ran
this exact build in a recent video
testing Claude's dynamic workflows,
which is their new feature where Claude
splits a big job across a swarm of
parallel agents. And I was really
underwhelmed with the performance. Even
with the ultra code dynamic workflows
that spawned like 30 plus agents, it got
a store up, but then it missed a lot of
the UI stuff. Like, every product looked
identical. There was no labels. There
wasn't even a hero image on the landing
page. So, we're going to run it again.
We're going to hand the same prompt to
Fable 5 on the left and Opus 48 on the
right. And we're going to give Opus a
chance to redeem itself. I did also
revise the prompt a little to give them
more of a chance. So calling out the
product labeling this time and other
stuff on the prompt so it avoids some of
these egregious mistakes that I made
last time. And this one build is going
to test out a lot at once. So we have
landing page and e-commerce design. We
have the database underneath. We have
the entire architecture of all of this.
So this could actually be useful
especially if you're I don't know moving
away from a platform like Shopify or
building out features or trying to build
out a whole ecom platform. So we'll see
how both of these do. So here is the
prompt. Build me a complete e-commerce
store for a fictional brand called
Slowburn. a small batch candle company.
Production quality mimicking a real
Shopify store. 30 distinct products.
Every product image must be visually
distinct. All text must be readable. No
low contrast text. Any of those pitfalls
that I fell into last time hopefully
will be missed. And I do have a check in
here, even though it's technically not a
one shot, but I just want to see the
different design directions that Fable 5
goes to versus Opus 48. But that's the
only tweaking we're going to do. There's
no there's no other revisions. So, all
right. It's already giving me quiet.
Can't pronounce that. Apo apothecary,
dark ritual, modern Wellness. So started
giving me ideas, whatever. Okay, so I
guess yeah, fine. I bet Opus4 is going
to do the same thing. By the way, too, I
built this usage tracker so we can see
exactly the input tokens, output tokens,
and the estimated costs if it were to be
usage based pricing, which Fable 5 will
go to in a couple weeks. So you can see
the difference in costs there. And I'll
also let you know how long each of these
builds take. So we'll have it across the
e-commerce store, 3D art museum, and Age
of Empires. This is funny, too. Opus 48
give the exact same options. Warm
Apothecary, Dark Ritual, Editorial Comm
as Fable 5. Fable 5 is on the image
generation step, waiting for an Asia to
generate all 30 of these images. Claude
is still moving through the rest of this
build. So, Fable 5 is faster than Opus
48, dare I say, and Slowburn is live
both from Fable 5 and Opus 48. So, we're
going to look at Opus 48's output first.
Little link here for Opus 48. And here
is Slowburn rituals for people who work
too much. Okay, not bad. It's a little
bit better than the dynamic workflows
example. At least the text is readable.
However, I see some little things here
and there already like small batch
candle co. It just doesn't read well.
The candle placement really should be
placed on the right, not the left, cuz
it's hard to read over the text. That's
something that I don't know. I feel like
is relatively simple for the models to
notice. And then we kind of had this
weird CTA here. I don't love that
button, but let's keep scrolling. Okay,
the slow burn idea. You don't need
another productivity app. yada yada.
Okay, so it breaks it out by categories.
All right, nice little nice little
animation. Nothing real new there. Okay,
the actual image generations. They look
better. We actually have labels on these
candles now. Not like last time where
there was no labels. And yeah, we got a
nice little studio type setting. Nice
little animation, little hover animation
on these. We've got the catalog here.
We'll click that in a second. Okay. And
then we have some like, you know,
classic proof points. I don't love these
these section colors. And then nice lit
clock out on a Tuesday. And oh, clock
out is the name of the candle. Got it.
And actually close my laptop. First time
in a month. Tired customer. Nice. Okay.
Nice little nice little touch. And then
we have footer here. All right. Yeah,
not bad. Let's check out the categories
first. Okay. A little all over the
place. Why would you think that this is
a proper filter? I mean, these are just
so many, but okay. We can filter by All
right. That's kind of weird. Each of
these blood orange did a good job of
categorizing these candles. And then we
have these categories based on, I guess,
your use case. Morning ritual, deep
work, unwind, sleep. That's not bad.
It's not bad. The featured tab here.
What else? Okay, let's click into one of
these candles. All right. I mean, it's
readable this time again. And then we
have this nice little see more at the
bottom. Add to cart. All right. Oh,
nice. Nice little nice little drawer
open there. We have this cart here. Kind
of looks like a trash can, though. It's
a little confusing, but everything is
readable. This is a surprise. Okay.
Navbar. All right. That's just terrible
UX. I don't know why it thinks that
selecting these the knob bar are like
that. Whatever. Okay, our story. All
right, not bad. It was better than the
last dynamic workflows demo. However,
let's see how Fable 5 matches up. So, I
got that link from cursor here and just
open this up. Still that funky font, but
way cleaner. We've got this nice little
I don't know what you call this little
notification thing at the top. It's a
classic ecom thing. We've got these nice
flavors, I guess, kind of rotating much
better buttons. We have this nice
gradient here in the background. The
header image calls out the candle like
the CTAs as a whole. Yeah, this is just
much cleaner of a header at least.
Interesting. Yeah, even these images.
It's it's it's funny how the like model
is smart enough to know how to prompt
the image generation model in this case
GBT image 2. Like I didn't give any
prompting on how to prompt the model,
but it did a way better job of capturing
this sort of candle aesthetic type shoot
with these little, you know, these
little branches and shadows and sun and
textured backgrounds, all that kind of
stuff. Even the colors of the candles
looks better. And then a just nice
subtle little zoom in here on these.
Then we have a nice view all candles.
Okay, this is nice too. Shop by ritual,
morning rituals, deep work, unwind. What
happens? Okay, cool. So that's way
better filters here as a whole. Nice
little product call out go here. Nice.
Looks good. Very similar drawer. Nice
little step one, two, three. Here's how
to use a candle in case you didn't
realize. Nice little testimonial here.
Email. Ooh, I like that. I like that
footer. That's a nice touch. Okay. Yeah,
I mean I think you see the difference
here. Our story. Okay. Let's go to view
all candles. And then a nice beautiful
little three column grid here with all
of the different candles. I mean, just
nice touch. So, it like took this color
from the candle and it knew to, you
know, have something like with a similar
color. Just image prompting really well
done. Looking good. Look at all these. I
mean, again, GPT image 2 just never
ceases to amaze me. That's a completely
separate aside, but yeah, this is a nice
touch. Even like that the little like
rainy day in the background. Like, was
it image prompting all of these as it
went through one by one? Like, that is
just freaking impressive. Nice filters
here. That's not filtered by the
flavors. those ugly looking flavors that
we had here. Just come on. Come on,
Opus. What are you doing? So, I think we
have a clear winner. Yeah, you can just
see how Fable 5 is going the extra mile.
And even the little stuff, the tiny
details like image generation, like
filtering the categories, the navbar at
the top here, even this little
notification here, it just kind of
matched like a e-commerce type feeling
site. So, I think Fable 5 is the clear
winner. Now, how much would this have
cost me in usage based pricing? So, if
we go to our tracker here, we can see
that Opus48
198,000 output tokens estimated $2141.
And then Fable 518K
output tokens, so a little bit less,
more token efficient. $36.84
equivalent. Not bad for a entire
e-commerce site. I mean, that's like
what 1 month and a Shopify bill. And
then speedwise, Fable 5 was probably 15
minutes faster than Opus 48. So, 35ish
minutes. whereas Opus 48 was like closer
to 50. So, Fable 5, at least for this
build, despite what people are saying,
seems to be faster than 48.
So, that's one point of the board, but
one build, of course, doesn't settle
everything just yet. Not to mention, I'm
having way too much fun with these
builds. Anyway, so this next one I've
been trying to build for literally
years, and no model has ever come close
to pulling it off. So, let's go back
into cursor. I'm just like in the ecom
build. We have Fable on the left and
Opus on the right. And what we're
building is an interactive 3D museum of
art history. I am a total art history
nerd and one thing that's always
bothered me is if you want to actually
understand the time period, the art
pieces that are a part of that. Your
options are basically a textbook or some
kind of Wikipedia rabbit hole. There's
no real clear visualization for this. So
what I want to build is a zoomable
timeline of every major art period. So
you can zoom into say Baroque and then
the famous artists of that era show up.
You can click on Kervagio for example
and you get this museum placard about
him and then you can actually look at
his paintings in a full kind of 3D
Kravagio gallery. We're going to use the
Wikipedia comments API to actually pull
all of this from Wikipedia and I'm going
to be extracting it into a database in
this case neon. So this tests a bunch of
things at once. First architecting
something this complex from scratch.
Second the actual data side. So
extracting hundreds of paintings from
Wikipedia, storing them, organizing
them. And then the third, this is the
big one, the actual 3D world itself and
how realistic these models can make it.
Because typically you'll have an output
that is just blobby kind of ugly 3JS.
But I really want it to look realistic
and have shading and lighting and have
it just be beautiful, like just an
immersive experience across the board.
So here is the prompt. Build me an
interactive 3D art museum of art history
that runs in the browser. The timeline,
basically everything that I explained.
Infinite canvas timeline. You go into
different artists. It has all the
different periods. Museum view data all
from Wikipedia API visual quality and I
just emphasize this cannot be a lazy 3JS
demo make the galleries as realistic as
possible lighting tone mapping all of
that fable 5 is already asking me about
the design direction but I told it to
just come up with three design
directions so I'm going to say like I
said just do all three opus is asking me
the same thing like I told Fable 5 I'm
just going to copy exactly what I told
Fable 5 already ran into an issue that
Opus 48 called out public domain
constraint versus modern art so things
like Picasso Dolly, etc. They're not in
public domain, so we can't actually get
their images. Surprised we can't just
take these from Wikipedia. I'm actually
going to push back on that because I
think this is just a free app. I don't
see why. Can't just include those as
images. So, apparently it is a copyright
thing. Collage refusing to extract these
images, which is fine. We'll just use
the images that are in the public domain
for now. So, interestingly, Fable 5 is
looks to be done with its output faster
than Opus 48. Fable 5 is testing in the
Cloud Chrome extension right now, which
I'm not looking at, I promise. And it's
going through like zoom scroll wheels.
This is actually something I've ran into
quite a bit doing this exact build in
the past where the actual zoom, the pan,
the movement is is terrible. So, it's
good that it's actually finding those
issues already. And then Opus 48 still
just building this out. I can just see a
lot of things that Fable 5 is picking up
on that is just really complex. This is
like needle in the haststack type stuff.
Francis Bacon failed because his article
title is Francis Bacon parentheses
artist. So, the derived category name is
wrong. I don't even know what that
means. But the fact that it's going
through all of these different artists,
there's probably hundreds of artists
here and it's finding these errors. Oh,
I see what happened cuz in Wikipedia
there's also probably another Francis
Bacon that's not an artist. So, the
parenthesis artist is throwing off the
entire category as a whole. Pretty darn
impressive. Another thing I noticed too
with Fable 5 is it's saying still
editing. Meanwhile, the pitch black
floor in the museum screenshot bothers
me. Let me look at the floor and
lighting settings. like it is really
quite opinionated even with design which
that is the first time I've ever seen
something like that. Fable 5 2 finished
probably 15 minutes before Claude and
it's just been queuing its work the
entire time. Status check so far on
Fable 5. 16 periods, 69 hours, 767
paintings in our Neon database. We have
a few timeline views for me to react to.
I'm not going to look at those yet. And
then it's also working on the museum
view as a whole. It's also doing a good
job of just like coordinating agents. So
it looks like it has a bunch of
different agents here. It's saying that
agent will reinvoke me when it finishes.
I'll continue then. So, it's just
working on stuff in the meantime on its
own and then it's spawning parallel
agents. So, it seems to be a pretty good
agent orchestrator as a whole.
Meanwhile, we've got Opus 48 still
humming through this build. Okay, Infil
5 is officially finished. We'll take a
look at it in a second. I'm going to
give Opus 48 a second to catch up. It
looks like it's queuing its work right
now, but that took probably I'd say 30
minutes. I'm also almost out of my usage
already. I started at like 65% usage on
the Max 20x subscription plan. So
between the two of these, it burned
through almost 40% of my usage in like
30 minutes. That's pretty wild. So
literally about 20 minutes later, Claude
or Opus 4 is running into the same issue
that Fable 5 had 20 minutes ago where
it's this pointer moving around the
actual space. So we'll see how it
navigates this. It is actually quite
interesting that Fable 5 is that much
faster than 4.8. definitely did not seem
to be the case in all the demos I've
seen. You can see it's been coding for
43 minutes now. All right, let's check
out Opus 48's 3D museum first. Art
history. Zoom through nine centuries.
Enter the atlas. Okay. Okay, we've got a
we've got a timeline view. I actually
like how it color coded this. Got some
nice overlapping with early Renaissance,
Northern Renaissance. Is this a proper
canvas? Uh can I zoom in? Oh, I can.
Look at that. Oh, nice. So they like
kind of pop up. Boom. Boom. That's a
little scattered. They're kind of
bleeding into each other. But this is
not bad. Not bad at all. Opus. Okay,
that's where it gets messy. Can I click
in? No. No. It just isn't working. I
can't click in anymore. Okay. For some
Okay, I think it's getting the canvas is
like canvas movement is overlapping the
actual click. So, I can't actually click
into these people. View is not bad. I
just can't get into the galleries, which
is kind of annoying that this broken.
agent should have QA this. These are
kind of messy, too. Uh, it would have
been nice to get into the galleries. We
have some other views here. These are
just like different types of categories
and art movements. This cosmos, I see
where it's going with this. It's a
little messy. So, I mean, Opus for it.
This is probably the best output I've
seen. I've tried this on other models.
This is probably when it comes to actual
organization and a visual hierarchy. It
did a good job of just me telling it,
you know, create a timeline and add
artists that way. So, that is Obus 48.
kind of failed a little bit cuz we
didn't actually see the museum gallery,
but let's see if Fable 5 did any better.
So, we'll go to five here. View and
Okay, I'm liking where this is going.
So, it did kind of that like
astrological motif, but a much better
job than Opus. So, it's just like it has
a nice little timeline. Then, we zoom in
and like the stars are, you know, people
and they kind of like overlap depending
on what they're when they lived. Pretty
sweet. So, you can like zoom in, you can
see all the different artists. They're
featured, you know, in the Northern
Renaissance. If you zoom out enough,
they like change to little dots. It's a
nice little touch. And then as you zoom
in, so there's no like overlap between
all these people, and it's doing some
sort of relation. I don't know what it
is, but these are like connecting to
themselves. I'm not sure if that was
intentional, if that's just an accident.
So really clean. This is actually
exactly what I pictured when I pictured
like this moving kind of zoom in
infinite canvas timeline. So let's
actually go to an artist now. Let's go.
Uh, let's go dig a nice little click
animation there. We got a little GSAP
action. I did request some GSAP. Let's
click it one more time. Boom. Boom.
Boom. Boom. And it's cool. You can like,
you know, you can like learn about
these. This is who Reno was. This is
Manet. Let's go into Dega. So, Dega and
Manet technically should be connected if
we're being picky because they were
friends in real life. Little fun fact.
That aside, let's go into Dega. Okay,
here's the gallery. I'm I'm liking what
I'm seeing already. Click to enter. Very
cool. Very freaking cool. Wow. This is
awesome. Oh my goodness. So, you can
move around with just just the left and
right arrow here. And I can move around
with my mouse here to actually look at
these paintings. I mean, look how cool
this is. Then I can walk and look. This
is incredible. They got loves painting
ballerinas, by the way, and horses. Big
ballerina [music] horses guy. Uh, this
is incredible. I mean, imagine having
this as a kid. How much more fun would
you have learning if you're able to do
something like this? We can go in. We
can look at this. We can click into it.
We can learn all about this. I mean,
this is incredible. This is so freaking
cool. And this is all just from
Wikipedia. And it did this across
hundreds of artists, like what a
thousand painting, almost 1,000
paintings. Fable 5. No surprise.
Actually, I am pretty surprised cuz the
first time I've seen a model that
actually is able to achieve this level
of detail and interactivity. The motions
are really fluid. We have all the
paintings just extracted everything so
easily in like literally like what, 30
minutes. So definitely have to give this
to Fable 5 considering Opus 48. I
couldn't actually click into the gallery
to actually see the gallery. I am
curious how Opus 48 designed the
gallery, but rules are rules. We only
gave Opus 48 one shot. So let's now just
look over at costs. Let's refresh this
48 51,000 input tokens, 437,000 output
tokens. Estimated cost about $46. And
then Fable 54,000 input, 280,000 output.
Interesting. So it's less output tokens.
I wonder if that's right. Yeah. So it's
much more token efficient. I mean,
that's what Anthropic said in their
announcement, but about 37% more
expensive. So, if you think about the
actual usage based pricing here, which
comes into effect in a couple weeks,
you're going to be paying like $64 for
this kind of build. Is it worth it?
Probably not. Anyway, moving on.
So, in my Fable 5 announcement video, I
had it on one shot a roller coaster
tycoon style game, and it actually
worked, which was really impressive. But
the game, it was it was 2D, if I'm being
picky. It was a little too pixelated for
my liking. So, instead, we're going to
put it to the test with a favorite of
mine from my childhood, Age of Empires.
So, this thing's going to be a whole new
beast. We're going to have a full 3D
world. We're going to have dozens of
units. We're going to have enemies that
attack you, a whole kind of like
building the civilization component. I
highly doubt it will get even close to
this, but we're going to put it to the
test and see both with Fable 5 and Opus
48. So, we'll open cursor Fable 5 on the
left, Opus 48 on the right, and paste in
this prompt. Build me a fully playable
Age of Empires style real-time strategy
game in the browser. Core loop all in a
full 3D world. 3JS or WebGL equivalent.
I start with the town center. Make it
look like a real game. Playable
lighting. And then it's already asking
which visual style stylized low poly
recommended. No, I don't want that. I
want it real. Painterly realistic
multi-exture. I honestly have no idea.
It's funny. It's the exact same
questions. Okay, so that only took about
30 minutes. 33 minutes for Opus and 30
minutes for Fable 5. Now, let's see
which one is better. Opus first. Bronze
Dawn 40 in the world. Okay. Already not
even close to Age of Empire graphics. I
mean, these are just blobs. Can I move
around? Uh, no. Left click, select.
Every time I do these game demos, I
don't know how to play these things.
It's just so confusing. Not intuitive. I
almost need Opus to just show me how to
do it. Left click, select. Okay, I can
select town center. Bottom left here.
Right click, move, gather, attack, rally
point, set. Okay. Not sure what this
that means. House. Can't build there.
There's not like a town center. Can't
zoom in. There's no movement. I think
this app is not working. Yeah. Okay. I'm
not going to waste any more time on
this. It looks like the app's completely
broken. I can't even move like around
the world. So, Opus did not complete the
task. So, let's see if Fable 5 is any
better. Again, my expectations are
relatively low. I know this is hard.
We'll go to Fable 5's demo here. Empires
of Dawn. Begin your reign. Select with
left click. Drag command with right
click. Okay, I'll figure it out. Okay,
now we're talking. Whoa. All right. Map
moves. There's our civilization. This is
insane. This is I mean, this is exactly
what the like graphics were. Like this
is just as good as Age of Empires. This
is wild. I mean, look at the freaking
difference. [laughter]
This is like this is not a single model
upgrade just in terms of graphics.
Nothing else. I don't know what the
actual gameplay is, and I'm probably not
going to get too much into the gameplay
cuz I never know how to play these
actual games, but like look at this
freaking thing. This is wild. So, okay.
All right. Let's just try to click some
buttons here. Or idle. Okay. House. Oh,
nice. You can Oh, wow. That's cool. Look
at this. Oh my god. All right. Farm.
Left click the place. Right. And then it
looks like we have I don't know, some
things over here. And then we have some
These are the enemies. Look at this.
They already have They already have
armor. I mean, I just cannot get over
these graphics. This is insane. Enemy
town center. How do we attack them?
This, by the way, is going to be
available on Steam. 299. Okay, what do
we do here? I don't know. Less five
population. I don't know how to actually
play these games, but it looks like it's
fully playable and like the map is
navigable. Okay, not enough resources,
so I need to I [music] need resources.
This Wow. Uh yeah, it just absolutely
crushed it. Like I knew it was good at
3D. I've seen some game demos of Fable
5. They're really good, but like this is
this is just on another level,
especially compared to Opusport 8. I
will let you be the judge, but I think
we've got a clear winner here. I of
course don't love this though because we
will now be getting used to a certain
level of quality that just cannot be
matched by Opus 48 which is surely
Anthropic's plan all along. Anyway, let
me know what I should be experimenting
with next. If you made it this far, I
hope you had fun watching along. Be sure
to leave a like, subscribe, helps out a
ton. Now, get back to building. We've
got less than 2 weeks of