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Claude Fable 5.1 and Claude Mythos 5.1

anthropic.com

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Re: Claude Fable 5.1 and Claude Mythos 5.1

#811

Post by lwansbrough »

alansaber wrote: post #810

The bar has dropped when the dialogue evolves to "output is less annoying" rather than some interesting new capability

On the contrary, I think the novelty of AI blowing our minds with each release has worn off a bit. These are some impressive improvements in science benchmarks. But we're sort of used to seeing impressive improvements now.

That doesn't make them less impressive, it just means people are shifting their focus more towards their own day to day experience with these things because we're relying on them so much now.

Like when the novelty of the automobile wore off, I'm sure people were starting to say "it's a bumpy ride though, isn't it?"

Re: Claude Fable 5.1 and Claude Mythos 5.1

#812

Post by crossroadsguy »

NL807 wrote: post #773
felixrieseberg wrote: post #69

(I work at Anthropic) Beyond all the benchmarks, I think Fable 5.1 is a big improvement in writing style. It sounds a lot less stereotypically like other Claude models, has (imho) a much more natural style, and responds to my style instructions more reliably. More work to be done (and we will!) but reading better prose makes me so much happier. Another point I expect not to get much attention until it all happens at…

Not sure if something like this is already on the table, but I would like to see Claude responses more in line with Simplified Technical English [1] by default. I find those writing styles a lot easier to read. This has been standardised as ASD-STE100 [2]. I've seen few people making SKILL.md files with that in mind, which works great, but having this by default without invoking the skill command would be better. 1.…

If someone has a way to tame GLM into doing this then please…

As a workhorse, GLM is so good, but goodness, its prose, wherever needed, makes me feel like going to a park and kicking all the benches there endlessly. And it doesn't change!

Re: Claude Fable 5.1 and Claude Mythos 5.1

#814

Post by aenis »

exabrial wrote: post #270
jumploops wrote: post #70

> For example, in testing by the investment firm Millennium, Fable 5.1 found the cause of a rare crash on their internal systems that none of their engineers (or any other model) had been able to explain after several years of trying. Say what you will about LLM-generated code, but stories like this give me hope that software will never be as buggy as it once was.

The marketing here trick is, if they spent the same money on humans they'd have found it years ago. Instead, the lurking variable here is new budget was added. With the new budget, they added a new tool, and the bug was located. The difference here was budget.

Nope. The difference here is stamina. Those models never tire while working on an issue, people do.

And I doubt finding that bug cost more than $1k or so. Even if $10k. Thats nothing for a large department in a multinational company. Thats maybe 2 weeks of fully loaded costs of an engineer. Thats a single business trip across the Atlantic. Thats about two company issued macbooks, or one, if the company is nice. Nope. Not budget.

Re: Claude Fable 5.1 and Claude Mythos 5.1

#815

Post by KellyCriterion »

NL807 wrote: post #773
felixrieseberg wrote: post #69

(I work at Anthropic) Beyond all the benchmarks, I think Fable 5.1 is a big improvement in writing style. It sounds a lot less stereotypically like other Claude models, has (imho) a much more natural style, and responds to my style instructions more reliably. More work to be done (and we will!) but reading better prose makes me so much happier. Another point I expect not to get much attention until it all happens at…

Not sure if something like this is already on the table, but I would like to see Claude responses more in line with Simplified Technical English [1] by default. I find those writing styles a lot easier to read. This has been standardised as ASD-STE100 [2]. I've seen few people making SKILL.md files with that in mind, which works great, but having this by default without invoking the skill command would be better. 1.…

Why not include this in your initial prompt when starting the session or into the global base prompt?

Re: Claude Fable 5.1 and Claude Mythos 5.1

#816

Post by 848585858 »

nprateem wrote: post #660
kccqzy wrote: post #520

I’ll be very excited to try it out and see the actual improvement in writing style. The denser writing style probably won’t bother me. Anthropic seems to be listening to community complaint on HN about how the writing style is grating. And apparently the solution from Anthropic is to add this block to every conversation!? > Mannered prose substitutes metaphor and flourish for direct statement. Instead of "a parameter…

Christ. With such waffly garbage in its system prompt no wonder its output is shit.

the philosopher stacies gotta earn their keep

Re: Claude Fable 5.1 and Claude Mythos 5.1

#817

Post by hollowturtle »

felixrieseberg wrote: post #69

(I work at Anthropic) Beyond all the benchmarks, I think Fable 5.1 is a big improvement in writing style. It sounds a lot less stereotypically like other Claude models, has (imho) a much more natural style, and responds to my style instructions more reliably. More work to be done (and we will!) but reading better prose makes me so much happier. Another point I expect not to get much attention until it all happens at…

> People have been correctly excited about the many "sudden" breakthroughs LLMs are making in Maths

That people ARE making, surely not machines. Like Terence Tao or Knuts did using the tool to their advantage, for example it would have been impossible for me to prove the same thing Tao did with an LLM. Same reason I believe programmers won't go away

Re: Claude Fable 5.1 and Claude Mythos 5.1

#819

Post by 848585858 »

kbrannigan wrote: post #426
EliasWatson wrote: post #308

To be honest, these frontier model releases have become boring for me. Opus 4.8 was already good enough for most of my use cases. I don't have any projects right now that I would use Fable for instead of Opus. So when I see announcements like this I just think "that's cool I guess" and then go back to using weaker/cheaper models. What's far more exciting right now is models like DeepSeek V4 Flash and GLM 5.3 Flash. T…

The human brain is fascinating Three years ago The idea of having A robot writing production level code in 10 minutes that would have needed a team of 5 people and 2 months. Was pure Scifi Now it's boring , not good enough Wow there should be a term of that .

surely we will see all of this production code changing the world in the next two weeks like with every revolutionary new model release

Re: Claude Fable 5.1 and Claude Mythos 5.1

#820

Post by nickstinemates »

KellyCriterion wrote: post #815
NL807 wrote: post #773

Earlier quoted context omitted.

Not sure if something like this is already on the table, but I would like to see Claude responses more in line with Simplified Technical English [1] by default. I find those writing styles a lot easier to read. This has been standardised as ASD-STE100 [2]. I've seen few people making SKILL.md files with that in mind, which works great, but having this by default without invoking the skill command would be better. 1.…

Why not include this in your initial prompt when starting the session or into the global base prompt?

Because skill adherence is awful, especially after a few turns.
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