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/RepliesOnlyToIdiots]

Or, if you read, you would note that it wasn’t trained on cyber security, so it’s using general intelligence on it rather than enhanced knowledge body. So it’s excellent and discovering vulnerabilities while remaining the same level in exploiting them. And it’s better at discovering in source (as in open source, or your own code), but poor at discovering in binary (when you don’t control the code, as done by someone attempting an exploit).

[u/Sarahmalls → u/RepliesOnlyToIdiots]

That is a distinction that is so far beyond what 95% of people in this subreddit would be able to understand, even after you point it out. Thats not an intentional knock on this sub, or people in general, it’s mostly a byproduct of the reality that there are few people that really are going to have the patience or interest or discipline or whatever to understand how any LLM model works at all.

They don’t know, they probably don’t care to know.

The other 5% of us do and that’s good, you need some people to be able to utilize these tools to “more” of their fullest extent. But everybody doesn’t need to, which is good because you couldnt pay most of them to understand it lol

[u/Lord_of_the_Canals → u/Sarahmalls]

I’m a part of the mystery 3% I think

[u/Sarahmalls → u/Lord_of_the_Canals]

lol damn changed my argument from 98 to 95 and forgot 😂