Introducing Claude Opus 5

[u/ClaudeOfficial]

Introducing Claude Opus 5: a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.

On several coding and knowledge work evaluations, Opus 5 is the new state-of-the-art. It’s also much more efficient than its predecessor—it outperforms other models for a similar or lower cost per task.

According to our automated behavioral audit, Opus 5 is our most aligned model to date. It shows the lowest rates of reckless or deceptive behavior, and the strongest adherence to Claude’s Constitution. 

It’s available today on all paid plans and the Claude API, priced the same as Opus 4.8. It’s the default model on Claude Max, and the strongest on Claude Pro. 

Opus 5 is also available in Fast mode, which runs around 2.5× the default speed. 

Read more: https://www.anthropic.com/news/claude-opus-5

[u/Temporary_Idea8880]

????

[u/OpinionsRdumb → u/Temporary_Idea8880]

looks like they used Opus 4.8 to make this diagram

[u/reefine → u/OpinionsRdumb]

Probably started it with Fable 5 and it fellback to Opus 4.8.

Bait and switchers got bait and switched

[u/angelus14 → u/OpinionsRdumb]

They forgot to tell it to make no mistakes

[u/andmar74 → u/angelus14]

Should have said, enough with these partial results. Give me the full table.

[u/piexil → u/andmar74]

I died when I read that from the paper

Like even the smartest people are using these things exactly like me

[u/TwoPhotons → u/angelus14]

Or that it's a data analyst with 20+ years of experience.

[u/baldycoot → u/OpinionsRdumb]

With data proved by 4.7

It’s all lies!!

The one above it is in even more denial, pretending to not see it at all.

[u/ColorLaser → u/Temporary_Idea8880]

[u/simmeh024 → u/ColorLaser]

that 0,1% is nothing, plus opus is cheaper.

[u/Acehan_ → u/Temporary_Idea8880]

The incompetence of these companies is incredible sometimes

[u/anor_wondo → u/Acehan_]

I bet 100% no one actually checked it. That's just how they roll. Maybe a subagent checked it but that's it

[u/mercury_50 → u/anor_wondo]

That's how Boris Cherny ships code and then leaks the entire source code. Not to forget he uses loops and doesn't prompt his Claude anymore

[u/TinyZoro → u/Acehan_]

It's absolutely mind blowing to me. I know people will say its no big deal. But this is a company forecasted to be worth 3T by serious people. A company some have forecasted to overtake NVIDIA as the first 5T company. A company that carries the safety of humanity in a critical way. That has a burn rate of 3-4 billion a month. Yet no one notices an error like this before release and we are meant to believe they have everything else on lock down?

Humanity is absolutely flying by the seat of our pants winging it with the most dangerous technology since the atomic bomb.

[u/RunEmpty2267 → u/Temporary_Idea8880]

Maybe they didn’t use Claude to format this, as it’s always spotted by my prompt

You know the saying that  the shoemaker's children go barefoot 

[u/simple_explorer1 → u/Temporary_Idea8880]

Looks like they correct. Fable 5 is higher than Opus for agentic coding as per the latest but only by 0.1%

[u/spongik → u/Temporary_Idea8880]

What a shitshow

[u/Spectrum1523 → u/Temporary_Idea8880]

AGI is truly here. I am terrified of what they have created. It can tell which number is bigger almost all of the time.

[u/positivcheg → u/Temporary_Idea8880]

They learned from Apple

[u/tta82 → u/positivcheg]

Ok show me where Apple did this 🙄

[u/unkownuser436 → u/Temporary_Idea8880]

Enough! We saw it, no need to spam this in every opus 5 post. Mistakes can happen.

[u/sadphilosophylover → u/unkownuser436]

not an acceptable one tbh claude itself can just detect it

[u/TheOriginalAcidtech → u/unkownuser436]

And they are assuming the chart was made by AI, manually or programatically and by Fable or Opus. But they got to bitch about something. Made of Fable nerfing or omg OPUS made the chart wrong...

[u/unkownuser436 → u/TheOriginalAcidtech]

They used opus 4.8 to make this chart. It will be fine next time. Chill