I Tested GPT 5.6 Sol vs Fable (4 Real Uses Cases)

Chat GVD Soul 5.6 is finally here and I've been able to test it for the past 48 hours and I got to say I'm impressed. But is it better than Fable 5? So I'm going to put it to the test by building four different things here. So I've got a landing page to kind of showcase my upcoming trip to Seoul in South Korea. And I built a fully working cafe ordering system. So I've got a mobile app and also web application to receive the orders. I built a GTA style game here. And last but not least, I asked it to come up with app ideas that can make me at least 30k per month. And this one's quite interesting. Now, I also gave Fable 5 the exact same prompt I gave to Soul, so we can compare the output of the two. So, I'm going to do an in-depth breakdown of the results. I'm going to show you who the clear winner is for each task, and I'll show you how much each task cost in token usage as well. And of course, I'm going to give my final take on this. Am I going to use Soul or Fable 5 for all my future projects? So, without wasting any more time, let's dive in. All right, so we got so much news this week. So GBT 5.6 finally released to the public. And earlier this week we got access to Fable 5 again but only until July 12th. So after that you can still use it but with API pricing which is super expensive. Now with chatbt just a quick recap here they actually released three different models. Soul, Terra, and Luna. So basically Soul is the smartest model here and Terra is basically for everyday task and Luna is going to be the most efficient. So you want to think of Luna kind of like the haiku on Claude. Now, of course, Soul is the one that I care about because we want the smartest model to be able to build stuff for us. And we're going to be testing its capability against Fable 5. And by the way, it is half the cost of Fable 5, but is it as good? Now, I never like to go deep into benchmarks cuz they don't matter to me cuz what matters is actually what the model can actually do for us. But I'm going to flash this one real quick on screen. So, according to this terminal benchmark, Soul 5.6 six actually scored higher than Mythos 5 and Fable 5 in this coding test for half the token price. So that is quite interesting. And speaking of interesting, one more thing to note about Soul 5.6. This is actually just a decimal upgrade, not a whole number upgrade like Opus 4.8 to Fable 5. So who knows what OpenAI is actually cooking behind the scene. Maybe they're working on a major release of GPT6 soon. All right, so let's dive into the use case. The first one is a landing page that I ask it to create. So I've got a 9-day trip coming up to Seoul, South Korea. So I basically have a list of places that I want to go to, but I want this to be displayed in a nicel looking landing page so I can share with my friends. So I went to Codeex here and I gave it this very simple prompt. Build a complete responsive HTML website that displays my 9-day trip to soul. And I just ask it to include some images as well and make the design experience high-end and alive. If you notice, my prompt is very simple here. I didn't give it too much detail because I really want to see like what it's able to produce for me from a very simple prompt like this. And of course, I included the places that I want to go to. So, the information is already here and I just want to see how it's able to design the website for me. And just to let you know, I'm actually using 5.6 with high effort here. I didn't even use extra high or ultra because this is the effort level that I like to use for most of my projects anyway. All right, so this is what ATVT was able to produce. I think first impression, it looks good already. If I scroll down, you'll be able to see all the dates here. And it took all the places that I'm going to and format it in a very nice visual here. And if I scroll down a bit more, it even gives me a couple of images to kind of visualize the places that I'm going to with the captioning here, which is a nice little touch. And if I scroll down a bit more, you'll see more images. So this particular one is actually this one, DDP. So yeah, it gives you an image so you can imagine where you're going. So it's a very nice looking uh travel blog style page. And this is a massive upgrade compared to 5.5 cuz 5.5 was really bad at design. But this one, I didn't give it any design direction. I didn't give it any influence on what colors to use, but it's able to put everything nicely here. And the spacing, all the font selection and its decision to make this one bigger and this one smaller. I think that looks really good. And also gives you a dark mode here, which is also really nice. And one more thing, if you notice here, all the images here, they look AI generated. So, Chadivity has its own image generation model. So, it's able to generate all these images using its own models, which is something that I think Fable is not going to be able to do. But let's see in a minute into what that's going to look like. But yeah, I think this test is purely to see how 5.6 performs in terms of design. And I really like what I see here. Now, let's compare this to what Fable generates. All right, so this is Fable 5. So, I've got this uh huge image with a very small scrolling animation here, which is nice. And if I scroll down here, you'll see all the dates here. And we've got an image for every single date, which is nice. And I do like the way that it scrolls down and the entries, the boxes here show up. I just like the animation here. And also gave me a link to Google Maps, which I didn't ask for. So, which is nice. I kind of expected this from Fable cuz Fable is usually able to think a couple more layers deep. And we've got some more images here of the places that I'm actually going to. I would say that design-wise is very similar to Chatbt. And I think in terms of images because clock does not have its own image generation models. So I think these were taken from Google. They don't look AI generated to me. But I think these ones are probably AI generated cuz Chad has it own image generation model. So but of course you can always tell it to grab the images from Google or generate the images. So that's not an issue here. So yeah, let me know in the comments what you guys think of this which one you think is better. I think design is very subjective. I'm actually leaning a little bit towards this one by Fable, but considering that Fable cost twice as much, I would probably use Soul to create something like this cuz I think this is good enough. Now, in terms of token usage, Soul actually used more tokens, 1.9 million tokens as opposed to 800,000 by Fable and and it took almost twice as long to generate this page here. And I'm assuming that it's also because it's generating the images itself, so that will burn tokens. But even with that, what's interesting is this only cost me $2 as opposed to this one by Fable, which cost me $6.60. So that is a massive difference in cost. And I think we got to take that into consideration when we're building things like this. And I think it's going to be a lot cheaper for Soul if I ask it to not generate any of the images and just grab it from Google. Now, if you guys want to grab this landing page, I'm going to just provide it in the description below so you can see all this data. And I'm also including all the prompts that I'm using for each of the task here. So you can just copy and paste and just try it out for yourself. I'm going to put that in the description below. All right. So the next project that I asked to build was this mobile app and web dashboard for a cafe. So kind of like a cafe where you can order online from a mobile app kind of like this. So customers can browse through on what they want to order and then the cafe will be able to receive all those orders and both apps can talk to each other. So this is just the reference design that I found on dribble that I gave it that I fed it to both AI models and I wanted to see what each model was able to produce for me with just one prompt to build two apps. Now for this project the prompt that I gave it was quite detailed here and most of these is just some design preferences that I have and this is the result that I was able to get. So there you go. So this is the mobile app that it was able to create and on the left side here is the ordering system or the dashboard for the cafe. Now I was actually quite impressed in what soul was able to create here. It actually followed the design pretty closely here. If you look at the color theme and everything you can see it reflected here on the mobile app. So that is very impressive. And also because Chad TBT has its own image generation model. It was able to generate all these product shots and I think they look phenomenal. I mean, just look at this. Right now, let's test out the functionality of this. If it was able to get all the features correct in just one prompt. So, let's try to order this uh banana bread here. And I'm going to add this to the order. And then I'm also going to order a long black with almond milk. And then maybe one sugar. And then add to order. And then I'm going to view my order. So, we got two items here. Continue to checkout. And I'm going to keep it as Devon Lane here. just a dummy name and this is just a dummy payment system obviously and I'm going to place dummy order. There you go. So the dashboard actually took in the order as you saw just now and then from here I can accept the order and then it will go to accepted and then I can start preparing. And if you notice it's even got the notification here. There's a new order coming in. So that is nice. And if I go back to my mobile app here, I can see that it's updated the status as well. So I can see as a customer, it is preparing the order. So it thought of every single thing here, which is very impressive. And then if I move it all the way to ready, mark as ready. I'm getting a notification here. Ready for pickup. If you saw that back to menu. Yeah. So notification here. Um I love the design to be honest with you. This is great in the first try. And if you're wondering how these two apps can talk to each other, basically I have Superbase connected to codeex. So it's able to retain all this data here and basically both apps can share the same data. So potentially can sell this to a cafe or restaurant. And just imagine what you can do with something like this. All right. So this is what Fable was able to create for me. The left side is the dashboard and the right side is actually mirroring my phone. So I actually installed this on my phone so I can simulate the app. So based on the design here, I think what Soul was able to do was actually better. And if I'm nitpicking here, all the images here are not correct. Like this one is showing like three cups of coffee here, cappuccino, uh, long black, not showing the actual product. But also, I'm surprised that it didn't follow the design direction. It didn't look anything like the design reference I gave it. But let's see if the functionality works, right? Right? Cuz the design you can always change and it's always very subjective as well. Um I mean it's not bad but let's see if this thing works. Right. Cappuccino. Let's try to order this one. Okay. So I do like the buttons here. I think they look good. Let's do skim milk one sugar. Like all this animations looks really good as well. So let's add this one to cart. And let's order something else. Let's try a maybe mocha. Okay. Let's add this to cart. Okay. And then view cart. I'm going to check out and yeah, just call it Devon and let's pay. All right, so it showed up as well and now I can accept the order and let's see if that updates my app. Yep, my app is updated. Let's start preparing. Also, another update here. So, functionality wise, it works perfectly. And here I can see notifications of orders coming in. You can see the profile of the staff here. And if I scroll down, these are my completed orders. So obviously if I make the screen bigger, you're going to be able to see everything nicer. And I can see the revenue today, active orders. So this is really good. I'm very impressed. I've never run a cafe before, but this is actually going to be very helpful. I can toggle on and off. I can make this sold out, right? There's a ton of different things I can probably implement here. But I'm going to give this one to Saul as the winner cuz number one, the functions work and number two, it followed the design direction. So I don't see a point of paying twice as many tokens to get kind of the same result. So yeah, now if you guys are curious on the prompt that I use to generate that mobile app and dashboard, you can use the logic of this prompt here and adapt it to any kind of product that you want. So yeah, grab the link down below. And by the way, in terms of token usage, soul actually only use 8 million tokens to generate those two apps, while Fable 5 used 34 million. So in terms of API cost, $62 versus $7 here. So again, I would definitely give this one to Soul 5.6 because it's not only is efficient, but the result was really good and it followed the design to the tea. Now, the next thing that I did was ask it to create a GTA style game here. And the prompt was very, very simple. Create a 3D GTA style driving game with a city center and a residential neighborhood. And I did ask it to make it a lively city with its own economy. make the world feel alive and I want to be able to drive the car around and and I want to see pedestrians and all these things and I want to see how detailed the game can be with just a simple prompt like this. So I'm going to start with what Soul actually produced. All right, so we've got the intro screen here. So I'm going to start driving. Nice. So I can probably control this, right? So that is a lot of people. So I can drive around and I can see houses here which I did ask for a residential and also some city. And I can also see, oh, I can't go under that. Okay, so that is probably a glitch that I can probably ask it to fix. And yeah, the city is very small here. You can see on the left side here, that is it. I do like that there is uh the traffic lights are working and you know, we got people walking around and keep in mind this is just one prompt. I I think if you give it a more detailed prompt in what you actually want or maybe you want a place that resembles an actual city, you can probably prompt it as well. Let's try to go up this bridge. Okay, so we got a bridge as well. So nice. All right, let's see what Fable is able to create for us. All right, so this is Fable. Okay, there's a sound there as well. Uh very similar. This one feels a lot more like GTA. It's It feels bigger. I think the size of the city is also quite similar to what Seoul was able to produce. There's less people here and and most of these are buildings. Okay. So, we got residential area as well. So, it did follow what I asked it to do. Nice. Yeah. So, I think this is really good from just one single prompt. Now, this game only use about 2 million tokens for soul to generate. So, about $2 in API cost. Keep in mind that this is just API cost if you were to use API for this. But obviously, this is going to be included in your monthly subscription. But I just want to show you guys an idea of how much tokens are actually burned creating this projects. Now, Fable 5 used five times more tokens and the tokens here are more expensive to begin with and it used five times so $26 here and it took twice as long to build this game here. Now, I would say that Soul actually the winner here because it only cost me $2 to build this game as opposed to $26 which is 13 times more, right? So, I think for a lot of people cost is also a factor when they're building things and I think the result here are both very similar. Both of them are good, but both of them also have its own glitches inside of the game. So, I would definitely give this so soul 5.6. All right. So, last but not least, I asked it to make me money. So, instead of building an app, I wanted to ask it to research the internet basically and give me ideas on what apps to build based on the gaps in the market. So, here's kind of the prompt that I gave it. Act as a software expert and give me at least three profitable app ideas solving annoying real business problems people are actively complaining about online. So every idea needs a 90% or higher probability of hitting $30,000 a month. So I want to be broad but also give it some kind of direction. Okay? So I want to make at least 30k per month. So it has an idea of what I'm trying to hit in terms of revenue. And for each idea I also wanted to explain how it's going to hit 30k per month. how many users am I going to need and how to price the app. Now, I also gave it some direction on how to find ideas. So, I wanted to scrape uh some of these websites here like Hacker News, Indie Hackers, Trustmr, Sensor Tower. Scrape all these websites, read the forums and Reddit and figure out what people are struggling with and also think about what app we can build to solve those problems. Treat these criteria and sources as absolute baseline floor, not the ceiling. feel free to go above and beyond and impress me with the depth of your research. So, I kind of want this to be the floor and not the ceiling. So, it's able to think beyond what I'm giving it as a prompt here. All right. So, this is the research that soul did. It's able to give me three different ideas here that it thinks has the highest probability of success of hitting 30k per month. Now, for this project, I don't really care about the design. I care about the ideas. And I actually went through these and I think the ideas are not bad at all. And I'm not going to bore you through every single detail here, but I think that this one here is pretty good. Like broken form checker. So just to give you a quick summary of what this idea is, like let's say uh a plumber has a website. They rely on their contact form on the websites to work, right? But sometimes it breaks. And if that contact form breaks, they're going to stop getting inquiries and they're going to take a revenue hit, right? So I think this is really important for a lot of these small local businesses to have a tool that can monitor the contact form on a daily basis to make sure that everything is working. So give me this idea and also research a lot of these source websites here to see if there's any existing players trying to solve this exact problem because we want to validate this idea by seeing if anybody's actually doing this. Right? Okay, so he gave me these examples here and also gave me a section on how to build an app like this like the tech stack and also how I'm going to achieve $30,000 per month, the pricing plan that I should have and also how to market the product. So this is not bad. So I'm going to compare this with what Fable is able to produce. So this is what Fable gave me. So also got three ideas because there's a lot of things to read here. So it basically gave you this idea here which I think is pretty good to be honest with you. And not only it gives you an idea but it also gives you like the competitors who's already doing this and how it's going right how much are they making in revenue and also give you a list of the tech stack that you need to build something like this and how to build it and how much you need to charge how many customers you need to reach 30,000 a month and also gives you an idea on the marketing plan like what you need to do to get users without paying for ads. So I think this is pretty good. Now, if you guys have been using Claude, you know that Claude is a lot better with writing. It has more soul. So, he's able to write in a way that is more convincing and more relatable and it's also easier to understand. So, I think for a research project like this, I would still prefer to use something like Fable or even Opus 4.8. Not so much to collect the data, right? because you can use scrapers to gather data, but you want a really smart model like Fable 5 here to analyze the data and to actually tell you whether this is worth building if there's demand for it. So, I would definitely give this to Fable 5. Now, in terms of token usage, both are very similar at 6 million for Fable and 8 million or 9 million for Soul, but obviously the API cost is massively different. But I think a research project like this is very important. it determines whether or not you want to go with that idea or not. So I think this is one of the rare cases that I would pick the more expensive model just because it's a kind of a makeorb breakak situation here. Now, if you want to see a summary of the token usage here for all the four projects, Babble actually used six times more tokens than Soul, right? So, you can see here from the breakdown of each project here, it only cost me $19 with Soul as opposed to $121 for Fable, which is six times more expensive. But again, it depends on the project that you're doing. So, I think for research projects like this one, I think Fable 5 is still worth it. All right, so the big question becomes, am I going to use Soul 5.6? As you can see from the projects that we did, there are pros and cons. So, but for Soul 5.6 definitely has much better design than GBT 5.5. And with that upgrade, it's still roughly 16th of Fable's API cost. And it's really good with coding. So, I'm going to use this to build most of my apps because I'm not worried about, you know, always running out of tokens. How do I optimize the prompt and things like this? And I've been using Codex for a while now and I never worried about running out of tokens. And by the way, they also upgraded their desktop codeex app. So Chativity and Codex is now one single app and I just feel that the desktop app is a lot better than claw desktop app. It's able to use your browser more efficiently. So I think Codex has a lot of good features here. Now when do I use Fable 5? So obviously Fable 5 I feel like it has more soul and it's better with writing. So if you're doing any type of writing or research projects, I will still go for Fable 5 even though it's more expensive. So better with analysis including business ideas and life planning. Better for app architecture and codebased review. So I recently finished an app that I was building and I asked Fable 5 to review the codes. So that's what I use Fable 5 for. So yeah, let me know if you guys are excited to try this out today. If you want to grab this resource here, I'm going to provide it in the YouTube link down below. And for those of you who made it till the end of this video, thanks again for watching and I'll see you in the next