# ChatGPT 5.6 just KILLED Fable 5

Channel: Alex Finn
Video: https://www.youtube.com/watch?v=r0TLqUwsB28
Duration: 20 min
Language: English
Words: 3839
Transcript page: https://viewrankai.com/tools/youtube-transcript/r0TLqUwsB28

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[0:00] It actually happens. Chat GPT 5.6 is out and I am totally blown away. But, is it better than Fable 5? I have a definitive answer for you. In this video, I'll cover what Chat GPT 5.6 is, the improvements it made, do an in-depth breakdown against Fable 5, show you who the clear winner is, and then show you an amazing workflow that will change how you use AI forever. This is the most important video you'll watch in a very long time. Make sure you lock in and let's get into it. Days like today are the absolute best if if you're into technology, congratulations, you are going to have a lot of fun right after

[0:40] this video. This is Chat GPT 5.6. I've had early access. I've been using it time. So, all the people that go in the comments go, "Oh, how'd you get a video out so quick? What the hell? What's going on?" Shut up. I've been using it. Now, let's get into it. Chat GPT 5.6, three models, Luna, Sol, Terra. The one

[0:57] we're going to talk about today is Sol. That's their biggest model. That's the one everyone goes, "Oh, how's it compared to Fable? Is it better than Fable?" That's the one we're going to be talking about is Sol. So, Sol is the smartest, Terra is kind of the medium, Luna is the efficient one, like the Chat GPT mini. So, it's Sol is the one we care I care about brains. So, let's talk about that. They also have many different thinking levels now. They have

[1:18] like seven different thinking levels. Ultra is the one I'm using. The reason why we can use the smartest Chat GPT model with the highest level thinking is because Chat GPT is so kind when it comes to usage. It gives you a ton of usage. So, you don't have to be scared like you are with Anthropic of using the highest thinking levels then two prompts later you have no more usage. Chat GPT, you can use the highest thinking levels

[1:43] and still get a ton of usage out of it. They have a fast mode, which is in my opinion revolutionary. I'll tell you you're getting Fable level thinking on a really, really fast speed. One challenge I've had with Fable over the last couple weeks is it's just slow. It's a slow model. But, ChatGPT 5 6 Soul Ultra on fast mode, lightning fast. It is the best model in some ways. We'll get into

[2:11] the Fable comparison in just a second. Stick around me. Here we go in-depth. Who's the winner? I hand a trophy out. It is the best model in some ways, but it is without a doubt the best harness Codex, which we'll also talk about that in a second. It's gone. Is the best harness at the best price at the best speed. Some also Also, some changes announced today. We'll go into in-depth breakdowns on subsequent videos. Let me

[2:39] know what you want me to do most. ChatGPT works on these other things. Codex app no more. It's gone. They combined it with the ChatGPT app, which I actually believe is a very smart move. Codex was the best harness. They're bringing all those nice features over to the ChatGPT app. It's all in one. I didn't like the separate apps. I'm a fan of this move. Codex is no more. It is changed on mobile as well. So, if you use Codex on mobile, if you use Codex on iPad, which I highly, highly recommend

[3:09] you do, it's now called remote sessions. They really want you using this in a very specific way on mobile, which I'll talk about a little bit in a second as well. I actually think the iPad experience now is like the best experience. I I use the iPad a ton. I'll talk about that, too. But, the iPad experience for chat I don't even think they're like trying to make it good. It actually is very good. I'll talk about why I think it's awesome, too. But, let's do the comparison everyone and their mothers is waiting for. ChatGPT 5

[3:37] 6 with Fable 5. Which is the winner? Well, I'm going to show you the comparison between the two, what the differences are, and then I'll tell you the winner once we go through this. We'll make this quick. I have been using the absolute booty load out of Fable 5 last week. I don't even know what booty load means. I just dropped that. As you can see here, I hit extra usage yesterday. I've spent $500 of credits in the last 24 hours of Fable 5. I've been using the absolute hell out of it. So, I am in-depth in the weeds on Fable 5. I know how it works inside and out. How

[4:09] does it compare to 5.6? Well, let's take a look at this here. Fable 5 is still better for planning and high-level thinking and understanding of large code bases. It is the best when it comes specifically to that. I'll give you an example. I have like an entire software factory I've built out inside of Codex and Claude code that allows you to kind

[4:31] of autonomously build a lot of software. It's very complex, in-depth. If you want a video on that, let me know down below. I'll do a whole video on loops and software factory if you're interested. But, here's the thing. When I gave that to Fable 5, I said, "Hey, look at my entire software factory and understand how it works." It understood it pretty much instantly. It was able to pick it up and start doing work in the factory like it was been there like it's been there for years. When I handed the software factory over to ChatGPT 5.6 initially when I got early access, I'm going to be honest, it did not pick it

[5:03] up immediately. It took a while. I had to kind of nudge it in different directions until it finally grasped how it worked. So, when it comes to understanding large code bases, being a high-level wise thinker, understanding from like a CEO level what's going on, I would say Fable 5's better. But, now let's talk about actual execution, actual building. 5.6 the winner. 5.6 is the winner for many, many different reasons. The code quality is just as good as Fable 5. The code it's putting on is just as good, but it is more eager. So, the tables have kind of flipped here where ChatGPT 5.6 is more eager than Fable. So, it will get tasks

[5:46] done. You can give it major, major tasks, and it will grab it, it will get it all done, it will add a whole bunch of extra features to it. It'll be fantastic at that. This was Claude's strength for a long time. That kind of eagerness of getting a ton done was Claude's strength for a very long time. ChatGPT has overtaken that. So, when it comes to execution, when it comes to actual building, 5.6 is the winner. Now, after this comparison we're going through, I'm going to actually show you the workflow. Everyone and their mothers is going on Twitter saying, "Oh, use ChatGPT as a sub-agent inside of Claude

[6:18] code." No, that's not the best way to do it. I'll show you the best way to do it in a second. You'll learn the best workflow once we go through this, once I declare the winner between ChatGPT 5.6 and Fable 5. Workflow coming right after this. Let's talk about price, and this is going to be a deal breaker for most

[6:32] people. Fable 5 unreasonably expensive. So expensive, I actually think this model will die. I think Fable 5 is the smartest AI model, potentially the greatest technology ever made. I think it's dead in the water. I was shocked when I started going into API pricing, and I within a few hours used hundreds of dollars of credits. That's absolutely insane. No normal person is going to want to pay that price, and then you

[6:59] even look at the enterprise right now. Companies are cutting out frontier models and using things like GLM 5.2 cuz costs are getting so high. I don't know who Fable 5 is for. It's absolutely genius level. I was uh prepared to tell everyone, "Hey, to be paying API pricing for it." And the moment I started paying API pricing for it, I'm like, "Wait a second. No, no, no, no, no. Done with this, done with Fable." Uh unreasonably expensive. It is so unreasonable, in fact, that I believe they're going to push up Opus 5. I think in the next week Opus 5 comes out. I believe I don't

[7:34] think it's Fable level. I believe it's very close to Fable level, but at way more reasonable prices. I just don't see how Fable fits into the picture with what I'm about to show you with ChatGPT. No one in their right mind, unless you're just outrageously rich, is going to be spending $500 a day on credits. And this wasn't even like a full day of coding. This was like an afternoon, like

[7:54] 1:00 p.m. to 8:00 p.m. of coding, $500. That is crazy. ChatGPT 5.6, it's more affordable, right? It's way more affordable than Fable 5. It is still costly. I have never, I'm going to be honest with you, and I do this all day, I've never hit my limits with ChatGPT before. That's never happened to me. 5, 5, everything before that, I've never hit my limits. I hit my limits for the

[8:19] first time yesterday using ChatGPT 5.6. That's never happened before. So, it is more expensive than the other ChatGPT models. I did hit my 5-hour window. I didn't come close to the weekly window. 5-hour window though, I hit the limit. I I started having to use API pricing. I was using Soul at Ultra level. So, like, if you go super hardcore on their most

[8:43] expensive model, you could hit limits. But, at the end of the day, it is way more affordable and reasonable than Fable 5. UI was always ChatGPT's weakness. It's now good. It's good enough at UI now. It It certainly improved it. It's good enough. It's not a concern now where you need to jump to Claude every single time. Claude is better at UI still. Here's where I actually think the winner comes in, and this is why I am going to declare

[9:08] ChatGPT 5.6 the winner. The harness around ChatGPT is so much better. It's so much better. The computer use is significantly better. The browser use is significantly better. Claude has made jumps here lately, but ChatGPT, the harness, doing things for you, signing up for websites, getting API keys, I've never been more confident when giving a model a task that it will do literally whatever it takes to get it done. It will pop open the browser, will control your computer, it will do whatever it needs in order to get that task done. And that is a feeling and emotion that I've never had with Claude inside their harness, which for me leads

[9:56] me to crown Chad GPT 5.6 the winner because that feeling of knowing when you give a task to a model, knowing it will get done is an invaluable feeling. Even though there's some weaknesses when it comes to planning, high-level thinking, figuring very large code bases out that it doesn't really match up with Fableon, the fact that you can give it a task and you know for certainty at the end it will be done for a reasonable price leads me to make Chad GPT 5.6 the winner. The question becomes also little things here. I'll do a video. Let me know down below. Do you want a full

[10:32] video on Hermes using Chad GPT 5.6 as well? I'll do that. But this leads me to the next section of this video, which is the workflow. How do you actually use it? We talked about what is better, how it compares to Fable 5, what the new changes are. How do you actually use it? Everyone and their mother's been telling you if you pay attention, Twitter, if you're in the Twitter bubble, "Oh, set up Chad GPT 5.6 as a sub agent inside Claude code." No, do not do that. I will show you the best way to do this. And before we do that real quick, if you

[11:04] learned anything so far, leave a like down below, subscribe, turn on notifications. All I do is make the absolute stone cold best content about AI on the entire internet. And if you want to work with me live, I do live bootcamps every single Friday in the Vibe Coding Academy. It's the number one community for people building with AI on planet Earth. We're also doing a $1,000

[11:29] hackathon right now. It ends in 2 weeks. You can still join it, get in, build something cool, submit it, you go in a thousand dollars. We're doing it every single month. Join the Vibe Coding Academy, link down below for that. Let's get into the workflow now. So, this is the Codex app. I'm using Codex app for now cuz I am filming this right before the model comes out. So, I'm still using the Codex app before it's combined with ChatGPT. But, here's how you want to use this. Here's how you want to use ChatGPT 5.6. First, we'll talk about from the harness level. You want to choose one

[12:00] computer or device you own to be kind of the head development machine. The reason why you want to do this is the remote control capabilities of ChatGPT are incredible. You can control ChatGPT from any device you have, iPad, iPhone, any of your computers, Mac Mini. So, what you want to do is choose your kind of main developer machine. This should be a desktop device. I'm using one of my Mac Studios, my Mac Studio 1. I have three of them, not to flex on you, but kind of a flex. I'm using my first one as my main developer machine. Now, every other

[12:38] device you have will be a node to that. Here's how you want to think about it. So, you have your main development machine where you're using ChatGPT or Codex, and then every other device you own will control that. So, if you have a desktop and you have a laptop, your laptop controls it, your iPad, your iPhone, everything controls this one place. And the reason why you want to do it this way is so that you have all your code in one place. Instead of having some features on your laptop, your desktop, some features on your iPhone, your iPad, it all goes to one place. And because the remote control functionality

[13:10] is so good on the ChatGPT and Codex apps, you can easily control from all your different devices. So, choose a device, make sure it's a desktop if you have one. The reason being is you can leave your desktop on 24/7 365. Laptops, you got to close it, puts it in sleep mode, different things like that. So, make sure you have kind of a desktop device, a Mac Studio, a gaming computer, whatever you got, make that your main computer. Even if you just have like an old dusty laptop in your closet that you can put on 24/7 mode and plug it in, use

[13:42] that. Something that can be up 24/7 365. So, from there you have your projects and you have your chats inside of each of the projects. I'm going over kind of high-level tips in here. We can do a deep dive building out a full app end to end on a subsequent video if you want, let me know down below. But, what we're going to do is you want to kind of have

[14:00] your factory admin chat in each project. This is the high-level chat where you can be like, "Okay, merge the code, create a PR, do this." Where it's kind of managing your entire factory. And then every other chat from there is going to be building out specific features for that project. So, you have your main admin chat where you can go in from any of your devices and say, "Hey, what's the status? What's uncommitted code we have? What PRs do we have to merge?" Things like that. It's kind of your high-level admin. And then every other chat is for specific features you're building out. Now, we said

[14:34] earlier Fable 5 is a better planning model and I I stand by that. So, what you want to do is you want to use Fable 5 for planning. So, if you have a project, you open it up inside Claude Code, you go into Fable 5 mode. I'd go on high. If you go on ultra code or higher, you spend hundreds of dollars for a single prompt. Just use high. When you're doing any sort of planning, you'll come into Claude Code, you will ask for the plan. "Hey, this is what I'm thinking about building. Please build out a very large spec." If you've been paying attention to all my videos, you

[15:08] know I talk about Linear and how I use Linear in my entire process. So, if you're using Linear, have it build the spec out in Linear. If not, totally fine to say, "Hey, build a markdown file." Then, what you will do is you will take that markdown file, go into your projects, drop it in, and say, "Here's the plan, build this out for me." Now, a lot of people are telling you to use a ChatGPT sub-agent inside of Claude Code to do execution. I don't like that at all because when you do that, you're missing out on all the amazing features of the ChatGPT harness. The ChatGPT

[15:42] harness does so many things so well for you. So, for instance, I'm building out my app, Henry Intelligent Machines, link down below if you want to get an early preview of that, and I'm having it test some of the action generation inside the app. In Henry, you launch a venture, and then it generates a bunch of actions that you need to do to push your

[16:00] business forward. I wanted to test that. Typically, when testing that, you would need to open up a browser, go through the flow yourself, click on things yourself, but all I do is I go in and I say, "Hey, test this out for me. Load it up into a browser, walk through it for me, do it five times, and then build the report on that." And that is what ChatGPT does. It opens up its own browser and runs all the servers. It gets whatever API keys it needs, it plugs them in, and it runs through everything. So, it said what I tested, actually opens it up, started a venture,

[16:36] did a bunch of different actions, tested everything out. It did all the testing for me. Something that would have typically taken me an hour before took 24 minutes for ChatGPT while I did other things. So, your workflow is get the planning from Claude Code, move it over to ChatGPT, and then you give the actions to

[16:57] ChatGPT. Here is the mindset I have. Anything you would manually need to do before when vibe coding, I just tell ChatGPT to do it. Anything it is. It doesn't matter what it is. If they say, "Hey, sign up for this account," I go, "No, you do it." If they say, "Hey, can you grab this API key?" I say, "No, you do it." If they say, "Hey, can you connect these two things together move this file over here, I say no, you do it. Chad G P T literally 100% of the

[17:24] time I have said hey, no, you do it. It's figured out how to do it. That's why this harness is so good when it comes to computer use, when it comes to browser use, it is absolutely next level. It is bar none not comparable to Claude code whatsoever. That's why the workflow is get your plans from Claude code, move them over to Chad G P T code X and then you say no, you do this. You handle this. And it will get done and it will save you tons of time. Now while you're in here, I do soul ultra for everything. It's the stone cold best. If

[17:56] you're on the $200 a month plan, you can get away with using fast for a lot of things. Again, I hit my limits using fast here for the first time in my entire life in Chad G P T. So maybe you don't use fast quite as much, but if you're on soul ultra on normal speeds, you can use up your $200 plan. Like you

[18:13] you're not going to hit your limits. You're going to have plenty of usage, which I cannot say for fable because I use the plan up in like a day and then when I went into API pricing, it was outrageous, out of control. 5.6 is the winner. It is my new daily driver. It is what you need to be using for pretty much everything outside of high level understanding, planning and some kind of UI tweaks if need be. It's still pretty good at UI. By the way, for the hardcore Alex Finn fans who know all about the world famous Alex Finn benchmark, yes, it blew away the benchmarks. This is the

[18:43] first person shooter test. It is absolutely incredible. It has it has crits, dynamic enemies, it has great explosions, it has great waves. The graphics are fantastic. The sounds are amazing. I don't know if you can hear the sounds or not. The power ups are incredible. Like there's like 10 different dynamic enemies. It's incredible. Chad G P T 5.6 won the benchmark test. I am really, really impressed. And what's incredible is over the next few weeks we're actually expecting G P T 6. We're expecting the next level. The The rumors I am hearing are that it's coming very soon. They're already done training it. They're just doing testing now. So, expect more

[19:21] videos like this very very soon. If you learn anything at all, likes, subscribes, turn on notifications. Again, live boot camp tomorrow, $1,000 hackathon next couple weeks. Join the Vibe Coding Academy link down below. I love you all. It's an honor to teach you these things. It's an honor to work with you. We will talk soon.

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