Seems really good so far using it in Claude Code CLI - it gave me a new flag when I asked a question: "I don't have a reliable way to read that number, so I'd be guessing if I gave you one — and this is exactly the kind of question where a confident guess is worse than none. What I can tell you is what I actually observe:" I really like this update - gave me a clear sense of the facts but didn't give me a guess just…
Claude Opus 5
211–220 of 1001 posts
Re: Claude Opus 5
#212I 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…
Also the cost per task. It appears to be significantly cheaper, cheaper than sonnet!
Re: Claude Opus 5
#213What's the point of 150 pages description of a model that's going to be replaced in a couple months? Who even reads this? I know it's cheap to generate text with LLMs, but this is just noise at this point.
It's okay if you're not the target audience for one or the other.
Re: Claude Opus 5
#214Maybe there’s a better comparison than cost per token, but it will be application-specific.
Re: Claude Opus 5
#215That's a crazy arc 3 score. What do people think of this? Are models actually developing fluid intelligence like what the creators claim to be measuring? Is it jus do to training for it? Is the benchmark flawed?
Re: Claude Opus 5
#216What's the point of 150 pages description of a model that's going to be replaced in a couple months? Who even reads this? I know it's cheap to generate text with LLMs, but this is just noise at this point.
Re: Claude Opus 5
#217Re: Claude Opus 5
#218I 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…
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.
Re: Claude Opus 5
#219Re: Claude Opus 5
#220Earlier quoted context omitted.
I like how they highlighted Opus 5 as the best for “Agentic Coding” even though the number is slightly lower than Fable. Close enough for marketing, I guess!
At half the price and less likely to auto-downgrade, it sounds like a reasonable claim.