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Claude Opus 5

anthropic.com

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Re: Claude Opus 5

#681

Post by seanhunter »

novlrdotcom wrote: post #668
abixb wrote: post #180

Earlier quoted context omitted.

So the rumors were right, Opus 5 was indeed being polished up for release. Huge improvements in GDPval-AA v2 too -- great for some of the knowledge work-based agentic workloads I run. Also glad they still kepy Fable 5 on "credits only" access. I think we're going to start seeing model providers gate top-of-the-line models behind pay-as-you-go API rates/credits while subsidizing other models on monthly subscriptions.

Does anyone know if Claude Code is on Opus 5 yet? That'd be amazing

When I updated this morning I got claude code v2.1.217. It doesn't have opus 5 listed under /models (opus 4.8 is the latest).

Re: Claude Opus 5

#682

Post by matheusmoreira »

trunnell wrote: post #416

The chaos appears to be tamed for now. From the system card [1]: The Fable cyber classifier we have previously discussed also applies to Claude Opus 5 , with one notable exception: for Claude Opus 5 , we’ve unblocked vulnerability finding in source code to help our coding customers develop more secure code. If you are a cyber defender and are experiencing blocks on Claude Opus 5 , we are also offering exemptions thro…

> Enterprise customers can also apply to join the Cyber Verification Program to have mitigations removed to enable penetration testing.

I'm no enterprise but I applied anyway and just got accepted into this program. That was a very pleasant surprise.

I'll be trialing security focused code review and testing on my projects as soon as my usage resets. I've also been reverse engineering stuff, we'll see how that goes. Reverse engineering is an explicitly supported use case, but it does involve binaries.

Re: Claude Opus 5

#683

Post by superfrank »

zmmmmm wrote: post #670

Pointless anecdote: I asked it to make some slides and it decided to write its own slide rendering engine: > On the format — I dropped reveal.js and wrote a small engine inline instead. Reveal would have meant a CDN load, and a deck that half-renders because the lecture theatre wifi is flaky It one-shotted a perfect functional mini version of powerpoint (or Reveal) for a simple presentation I asked it to make.

It's awesome that it had the capability to do that, but it worries me a bit that it chose to do that.

Re: Claude Opus 5

#684

Post by motoxpro »

Void_ wrote: post #661
wuhhh wrote: post #457

It really feels as though my 20 year career as a front end developer is coming to a very abrupt end; at least as I have know it these past two decades.

I tried making a Things clone yesterday. Spent maybe 7 hours of promoting with Fable. I wanted to get drag and drop right, and I wanted good code architecture to start with. It’s using TinyBase for data storage. Here’s how far I got in 7 hours: https://focuslist.app Yes, much faster than writing all of that by hand. But prompting quality software into existence? No way. It would take at least another full time week t…

A week is fast, no? Would it be faster by hand?

50 hours of work seems like a tiny investment.

Re: Claude Opus 5

#685

Post by motoxpro »

slices wrote: post #467
wuhhh wrote: post #457

It really feels as though my 20 year career as a front end developer is coming to a very abrupt end; at least as I have know it these past two decades.

really? I have yet to see fable or 5.6 reliably generate front end code with correct a11y, for one thing -- does that not matter to the work you do?

I find this hard to believe. All I have to do is give it an example and tell it to go through and add it to the repo and it does it.

Re: Claude Opus 5

#688

Post by krzyk »

krzyk wrote: post #452
postalcoder wrote: post #135

I think the most important thing here is not absolute performance. It's that organizations now have access to a Fable-ish model without Fable's 30-day data retention requirement[0]. > "Consistent with prior Opus models, Opus 5 does not have data retention requirements for general access."[1] On the Opus model release page, the reason why Fable doesn't have an ARC-AGI score is because of that retention policy[2]. 0: h…

And to the guardrails of Fable: https://x.com/cheatyyyy/status/2080693704290140330

And that one was funny: https://x.com/i/status/2080697793023483928

Re: Claude Opus 5

#689

Post by FuckButtons »

zmmmmm wrote: post #670

Pointless anecdote: I asked it to make some slides and it decided to write its own slide rendering engine: > On the format — I dropped reveal.js and wrote a small engine inline instead. Reveal would have meant a CDN load, and a deck that half-renders because the lecture theatre wifi is flaky It one-shotted a perfect functional mini version of powerpoint (or Reveal) for a simple presentation I asked it to make.

You know PowerPoint is just a zip archive of xml files right?

Re: Claude Opus 5

#690

Post by dmsehuang »

Anyone else feel like Claude Code has gotten worse lately? It keeps going off on tangents I never asked about, and it won't stick to a simple rule I've given it repeatedly: stay concise, only expand when I ask. It just doesn't follow that.

Worse, about two weeks ago it recommended a command and assured me it was safe. I pushed back and asked it to double-check, and it confirmed again that it was safe. I trusted that and ran it — and it wiped out weeks of my data.

I don't have hard proof, but I can't shake the feeling that Anthropic is doing what Apple does: rolling out a new model while letting the old one degrade, whether on purpose or just as a side effect (like how iOS updates quietly eat more resources and slow down older phones). Lately I feel like I'm constantly fighting with Opus (not Fable, because my Fable quota burns through way too fast).

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