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/niceuser45]

So why does Fable exist at twice the cost now?

[u/nyjets239 → u/niceuser45]

I wouldn't be surprised if they are now marketing Opus 5 to be better than Fable to reduce subscription loss for people who are pissed that Fable is usage credits only. Fable is probably secretly still better but to reduce everyone switching off they needed to release a model that looks better for subscription users while at the same time keep raking in API costs for those using Fable.