On July 25, 2026, AI innovator Anthropic officially launched its latest AI model, Claude Opus 5. Serving as a significant upgrade from Opus 4.8, this model is tailored for everyday high-demand scenarios, offering performance that nearly matches that of its premier model, Fable 5, but at a mere fraction—half—of the operational cost. Opus 5 shines in intricate tasks such as coding, research, and business initiatives.

In the rigorous CursorBench 3.2 benchmark evaluation, Opus 5 scored just 0.5% below Fable 5's peak performance when resources were maximized, all while cutting costs in half. During the OSWorld 2.0 assessment, Opus 5 even outperformed Fable 5's previous top score, achieving this with task costs amounting to slightly over one-third of Fable 5's.

Furthermore, Opus 5 distinguished itself in the Frontier-Bench v0.1 software engineering test, outperforming other competing models with a task completion rate more than twice that of Opus 4.8. Presently, Opus 5 is accessible via Claude's diverse applications and APIs, serving as the default model for Claude Max subscribers and standing as the most powerful optional model for those with Claude Pro subscriptions.