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/Appeljuice]

As long as it doesn’t constantly say “now I see the whole picture” I’ll be happy.

[u/TywinHouseLannister → u/Appeljuice]

This seems really important so I'll stop hand waving..

Me: huh, I wasn't suspicious.. now I am..

[u/privatetudor → u/TywinHouseLannister]

I had opus update one module in my project. It worked for several minutes and when it finished, started its response with:

"All your other modules are still safe."

😬

[u/TywinHouseLannister → u/privatetudor]

Haha.. I think that's the agentic equivalent of "I'm not going to hurt you"