Claude Opus 5.5 Released, Offers Fable 5.1 Performance at 40% Lower Cost

Core summary

One sentence to understand this update

Anthropic has launched Claude Opus 5.5, the initial model in its new 5.5 family, delivering Claude Fable 5.1 performance with a 40% cost reduction compared to Opus 5.

Impact & opportunity

What this could mean

Developers can now integrate a powerful, more cost-effective Claude Opus 5.5 into their applications, potentially expanding the range of feasible AI-powered solutions.