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TLDR
Anthropic's Claude Opus 5.5 matches the performance of Fable 5.1 on most tasks while costing 40-51% less to run and delivering outputs up to 50% faster on specific use cases like code migration and spreadsheet tasks. The real practical improvement is a major rewrite of its communication style: outputs prioritize the most important information upfront, use less jargon, and follow user-specified formatting rules, making them much easier to read at a glance. This combination of near-top-tier capability at dramatically lower cost may make it a more practical default model for everyday users than the expensive frontier models.
Key points
Claude Opus 5.5 costs 40% less to run than Opus 5, with input tokens dropped from $5 to $4 and output tokens from $25 to $20.
On the Aenta coding benchmark, Opus 5.5 scores 66.4 compared to Fable 5.1's 55.8.
Opus 5.5 completed a code migration task in 9.5 hours versus Fable 5.1's 12 hours, at 51% lower cost.
Computer use benchmark shows only a 1% improvement over Fable 5.1, a smaller gain than other benchmarks.
The model applies user-specified writing rules, puts the most important information first, and avoids jargon in its outputs.
Tools mentioned
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Transcript (captions)
And just like that, Anthropic is back. They just released their new model called Claude Opus 5.5. And I'm not going to lie, usually when a model drops, I'm pretty skeptical because
everybody says it's a gamecher, and I usually think it's just hype. But there are a few very practical updates to this new model that I'm genuinely excited about. So, in this video, I'm going to
break it down very simply so you can understand what is new, and I'm going to get straight to the point. So, let's dive right in. All right, so first things first, we have 40% lower cost
with this model compared to the previous Opus 5 model. As you can see right here, Enthropic said, "We're introducing Claude Opus 5.5, the first model in our new Claude 5.5 family and performs at
the level of Claude Fable 5.1 on most work and cost 40% less to run than Opus 5, which Opus 5 obviously is much cheaper than the Claude Fable models. So supposedly this is going to be a really
cheap model to run at give or take the same intelligence as Fable 5.1. Now let's quickly break down the API pricing. Now let's quickly break down the API pricing. So first of all, the
input tokens went from $5 for Opus 5 and it's now down to $4 and it is now down to $4. Output tokens for Opus 5 were $25 and now this is $20. As well as we do get a decrease in the cached input as
well. On top of this being cheaper to run, Opus 5.5 requires less compute to serve than Opus 5. And then here is the chart we are so familiar with seeing whenever a new model drops. So this is
actually pretty impressive here. Opus 5.5 on Aenta coding is 66.4. And this is compared to Fable 5.1 which is 55.8. So it scores over Fable 5.1 on most of these benchmarks here or I guess every
single one of them which is actually pretty crazy if you think about it with how cheap it is. And this benchmark right here, computer use for me is the main one that I'm looking at with these
new model releases because obviously coding is already very good when it comes to models, even though there is, you know, decent increase here. But computer use is the key thing that I
think that AI is still trying to crack and when it does, it's going to be pretty gamechanging. So, I'm just waiting for this number to get higher and higher. So, this is just like a a
slight 1% increase over Fable 5.1, which I wish were higher, but of course, it is nice that it is better for cheaper. And then of course we obviously have the new big dog on the block and that is
Chatchabe T6 Astra and Opus 5.5 does compare very well to GPT6 Astra as it is better at majority of these tasks as well. Looks like the only things Astra is better at is business workflows and
agentic scientific research. Now this is very interesting. Enthropic tested this out compared to Fable 5.1 and it was able to perform a code migration in 9 and 1/2 hours whereas Fable 5.1
previously took 12 hours. So, it is significantly faster than Fable 5.1 as well. And probably the craziest part about this is it was 51% cheaper than Fable 5.1. And one big thing about these
new model releases is to be completely honest, it's not necessarily, in my opinion, all about the new capabilities that it unlocks. Rather, how cheap can you run specific tasks compared to other
models? Because yes, something like Fable 5.1 or GPT6 Astra can do some pretty amazing and mind-blowing things, but if it's going to cost you an arm and a leg, most people can't necessarily
afford to run that all the time for all the tasks that they run. So, if they could get a model that is close to as capable for much cheaper and in this case, 51% cheaper. I think this is a
real improvement. Again, here is another use case tested Opus 5 and Opus 5.1. So, Opus 5 took 93 minutes, 5.5 took 63 minutes, and then the reported cost reduction here was 50% for a spreadsheet
and a presentation test. Now, this is the thing that I am personally most excited about, and I think we'll probably make the biggest change for us as average consumers of these AI models,
and that is communication. Enthropic said, "We've made major improvements to the way that Opus 5.5 writes and communicates." One of the most common areas of feedback we heard about Opus 5,
its messages are much easier to understand at a glance. If you are using AI models every single day like me, you probably get very tired of trying to decipher what your AI is actually trying
to tell you. I've had this problem with Grockbot really bad over the last couple of days and it's really gotten on my nerves. So, if Opus 5.5 does communicate better and give you better outputs that
you could read at a glance and fully understand what it's trying to say, this is something that I'm very excited for. Now, it says that they put the most important information up front. It's
less likely to use jargon or random phrases and follows the writing rules that you give it. So, again, this is just all a plus in my eyes. And if I scroll down in this article, they even
give me examples of specific outputs comparing Claude Opus 5 with 5.5. And you can really see a difference in how much easier it is to read. On the left, Opus 5.5, like this looks like you're
trying to read code, trying to understand what it's trying to tell you. Whereas on the right, we get this text in bold right here to instantly identify what it is that you're even reading. I
think that this looks so much easier at first glance to understand what this is trying to say. So, this is explaining a bug. I could then click on summarizing a thread, um, which is probably going to
be more practical to everyday users. And again, this is summarizing a Slack thread. So, this is the prompt that they gave it in this initial testing. And then it's using m dashes, a huge blob of
text. I don't necessarily know exactly what it's trying to say at first glance. Whereas, whereas the output from Opus 5.5 is much simpler. It breaks down the problem. It shows the immediate fixes.
It shows the long-term fixes. And I think that just looks so much more clean. And then same thing with explaining a design change. Obviously, you know, this like has some code in
here just looks tough to read. Whereas this is much simpler and easier to read. Now, I went and tested this myself. So, I basically told Claude Fable 5.1 and Opus 5.5 to go and pull from my YouTube
videos and give me a breakdown based on all the data that I have. And this is the output here. I'll give you a second to guess which is which. So, on the lefth hand side, we have Fable 5.1. And
on the right hand side, the output is Opus 5.5. And I genuinely do think that this is much simpler and easier to read. It breaks down the overview. It has this little table view to show the videos and
the amount of views per day it's getting. It shows the top performers right here. And I like how it makes the important things in bold, which just makes it much easier to read. It shows
the engagement, traffic sources, and then probably the most important thing, the three things that I need to do today. Now, here are some cool examples that Enthropic gave us of use cases of
Opus 5.5. So, it was able to generate this video right here showing a short story about a watermelon. I think that's a cool use case. Next, we have a recreation of Apollo 8's Earth Rising.
So, looks like it's generating all the visuals here along with this little diagram. Then, this one's pretty cool. Here is a pencil sketch that you could play with. So, it's almost like an
interactive uh infographic diagram that it's showing in order to explain something. I I think that this could be pretty cool if you're trying to learn a specific concept or teach it if you're a
teacher, for example. Now, here are some of the final numbers. Astra still leads on specific tasks like I said earlier. So business workflows and scientific research it does have Opus 5.5 beat. But
honestly after taking a look at the benchmarks I'm pretty impressed at how capable 5.5 is for how cheap it is and how fast it is compared to Fable 5.1 and GPT6 Astra. Now the last thing on this
announcement is we have more room before we hit our usage limits inside of Claude. So I think this is obviously going to be good news for people. So, we now have a higher 5-h hour limit as well
as we have a reset that we could save and use it whenever we choose to. And this applies to anybody who is a promax team and seatbased enterprise user. And then lastly, here are all the places
that we can use Opus 5.5 right now. Anyways guys, there we have it. That is the new Cloud Opus 5.5. That is a very quick breakdown. If you enjoyed this video, subscribe to the channel for more
content like this. Let me know what you think in the comments and I'll see you in the next video. Cheers.