Fable 5 contra Opus 4.8: què demostra l’app per a gossos creada amb un sol prompt

This is my dog, Charlie, and for years, he's walked the same block every single day sniffing the same smells. But that was before Claude's Fable Five built him his own iPhone app called Charlie's Sniffari, which by the way, is a real game on my phone and it takes us somewhere new every single day on a walk. Now, I used Fable Five to build this entire thing with just one prompt and it turned out better than I could have ever imagined. So, in this video, I'm going to show you why Fable Five is on a completely new level when it comes to building apps. I'll show you why the look of an app matters way more than you think even if you're not an artist. And in the end, I'm going to put this head-to-head against Opus Four Coin Eight so you can see the difference and it's not even close. Now, unfortunately, even with the shots, we almost lost Charlie as a puppy to parvo. But after $12,000 in emergency care and a lot of sleepless, worried nights, Charlie fought through the whole thing and he survived. And now he's healthy and now he's spoiled and he's obsessed with one thing in this world and that is sniffing everything he can on walks. So, I had an idea. What if I could take my favorite

thing, which is Fable Five, and build him an app that turns every walk into a brand new adventure or a Sniffari, which is like a safari but the whole point is to find new smells and new places that we've never been before. But that's just what I asked for. What Fable Five actually built turned out to be so much better than I expected and I can't wait for you to see the final result. So, let's jump right in. So, to build this, we need two things. First, we need Fable Five. That's the model that's going to write this entire app for us. And if you didn't know, Anthropic says that Fable Five is the most powerful model that they've ever put out, which is exactly the whole reason why we're building this app with Fable Five. And the second thing is it's all the art that goes into a game like this. And that's where Higgs Field comes in, who I want to thank today for sponsoring this video and being an amazing partner. And these are the two stars of the show. There's Fable Five and there's Higgs Field and together, they do some really awesome things. So, let's jump right in and take a look at what the prompt looks like to kick this thing off. Now, the prompt is the most important piece here because

we're going to give Fable 5 just one prompt and we're going to let it run all the way through on its own. And for a prompt like this, I don't want to write it myself. You can see how long this prompt actually is. So, what I do instead is I have Claude write the prompt for me and I do that in three steps that I call the BIP method. First is brain dump. I just tell Claude everything that I want in the app. I'm telling it about the game. I'm telling it about the walking logic, the rewards, the leveling up. Literally everything that I can think of, I'm just putting into Claude. And then I have Claude interview me and ask me questions on things that I hadn't thought of yet. And finally, it takes all that information and it creates a really big detailed prompt that I can copy and paste right into Fable, which is exactly what I did along with a couple photos of Charlie. Now, I did give Fable a lot of autonomy here, but I did tell it that I wanted one thing. And that is I wanted my art to look like voxel art. Now, if you've never heard of that term before, voxel art is basically pixel art but in 3D. So, everything it builds is in these little blocks and I just thought it

would look really cool for this app. And of course, I did tell it to generate all of the art through Higgs Field. But for everything else, I told it to be creative. I gave it creative freedom. I told it to surprise me because Fable 5 is so powerful that I don't want to be the director. I want Fable 5 to be the director here. And of course, if you want to try this out yourself after the video, the link to the prompt along with my entire prompt library is completely free in the description. Now, in Claude code, I did run the command {slash} goal. And what that's basically going to do is it's going to force Fable to check its own work against the prompt that I created. So, it can't tell me that it's completely done until everything in the prompt is actually built and working. And since apparently I'm trying to blow through my entire weekly usage limit as fast as humanly possible, I'm also going to take that exact prompt and those exact photos and run it in Opus 4.8 at the same time in the background. And at the very end, we'll put them side by side and you can see which one looks better. So, building an app like this is actually easier than you think. There's four pieces to a project that we need to

look at here. The first piece is the idea and the prompt. Now, the good news is we just did that together, so we can mark that off the list. But, that prompt is going to drive everything else from here. The second piece of that project that we need to look at is the plan. Now, this is where Fable 5 really shines because it's going to read the entire prompt and think through every single step, every single piece of the app before it starts building anything. Anthropic says that the more complex the task, the better Fable 5 is compared to any other model that's out there. That's exactly why I gave it one big prompt to run off of. Now, what Fable 5 can't actually do is make the images or animations itself. So, what it does is it acts as the creative director, and then it needs to hand it off to a partner like Higgsfield. And that takes us to the third piece of the project, which is the art itself. Now, you can see that Fable 5 is connecting right into Higgsfield and creating these images in real time. But, any image is only ever as good as the prompt that it was given. And that's exactly where Fable 5 comes in because it writes the best prompts out there. So, instead of

me having to micromanage it for every single image that's trying to create, Fable 5 is the creative director here. Now, right here is Higgsfield's website, and it has every leading image and video and voice model that's out there, and it's all in one place. And even though we did all of this inside of Cloud Code, I still think that this part is pretty cool to show you. Now, if you go over to my asset folder here, you're going to see all the images and videos that Fable made. Now, if we click on one, it shows the exact model that was used. And also shows the exact prompt that Fable wrote to create it. Now, I never had to think about which photo or video model to use. For images, Fable and Higgsfield decided to use Nano Banana. For the animations, they picked Kling. And they even used Sea Dance for one of the videos. Now, I didn't have to tell it to do any of this, it just knew what model to pick automatically. Now, one thing is really important to think through when you're creating an app, and that is every single image has to have the same look. There has to be some consistency there. It can't drift. And because Fable 5 holds the context for all of these images throughout the whole process.

Every image looks like it came from the same place. Now, the good news here is that I don't have to download any of these images from Higgsfield's website. Since we're using Cloud Code with the Higgsfield connector, all of the files are just being saved straight to my computer. Now, take a look at the files over here on the top right. You can see that every single image that has been created is being downloaded to my computer as well. Now, hey, really quick, if you're enjoying this, please do me a favor and hit subscribe and like this video. It really helps out the channel and of course, I appreciate it. But, okay, on to piece number four, which is the app itself. All right, we'll take a look at this. So, Cloud Code has built the entire app and it has opened up a iPhone 17 simulator right here in Xcode. Now, if you've never heard of Xcode before, this is a tool that the real iOS developers use to build real iPhone apps. Now, it is completely free to download on a Mac, but let's take a look at what it built. So, let's start right here on the home screen. Now, I love this part right here because Charlie's at the top and you can actually interact with him if you want

to. He's sitting there, he's blinking, he's animated. And if you tap him, he does a little trick. Now, this whole interactive piece is a cling animation that Higgsfield built. It took the image of Charlie, it turned him into a character, and now you can play with him on the app. If you scroll down a little bit, you're going to see today's Sniffari, which is the walk of the day. Now, I can pick how long I want this to go. Now, when I pick one, it's going to show me the exact route that I need to take on the map along with the top sniff spots along the way. If you scroll down just a little bit more, you're going to see that there is a daily quest. Now, these are little goals that Charlie and I can do together. And if we complete them, we get a treasure chest, which just gives us some bonus points in the app. Now, right below that, you're going to see the exact percentage of the whole neighborhood that we've explored so far. Now, if I jump over to the explore tab, this is my full map of the neighborhood. Now, you can see that it's covered in fog, so every street that we walk down clears that fog away. And the whole goal is to uncover parts that we've never been to, which gives Charlie brand new

sniffs. Now, this isn't actually my neighborhood because we are running on a simulator right now and doesn't know exactly where I'm at. But there is this little toggle button for a demo walk. So no GPS is needed. But once I put this on my actual phone, it will use my real GPS. Now there's so much more here, but it would take forever to go through everything. But there are little celebrations and animations and sound effects that were built in. But the point here is that it built a real app that turned out amazing. And remember, all of this started with just one prompt. Okay, two things really quick before we wrap this up. First, I do want to show you how you can set up Higgs Field inside of Claude yourself. And then I'm going to show you what the Opus 4.8 build came up with. So setting up Higgs Field inside of Claude is really easy. What you're going to do is you're going to go to settings. And then you're going to go to connectors. And then you're going to add a custom connector. You're going to name it Higgs Field. And then you'll paste in this MCP server address that I have on the screen right now. And of course, I'll drop this into the description as well if you want to

copy and paste it. And second, remember I told you that we're running this exact same prompt through Opus 4.8 at the same time because I wanted to see what the difference looked like. So let's take a quick look at how it turned out. So Fable 5 obviously is the smarter model and you already saw what they came up with. But Opus did an okay job. It's not bad. But when you put them side by side, it's not even close to what Fable built. But unfortunately, Opus is missing a ton of features and it just doesn't have that same polish that Fable built for us. So for me, Fable is the clear winner here. So that's Fable 5 building our app Charlie's Sniffari using Higgs Field for all of the art. And every prompt that was used today is in the prompt library in the description for free. So go ahead and check that out. And of course, click the Higgs Field link yourself because it is such a cool product. And if you're into AI and trying to learn AI, this is such a staple product that you need to learn. So thank you for watching and I will see you in the next one.