Claude Opus 5 Beats Claude Fable 5 in Frontier Bench Tests

Anthropic’s Claude Opus 5 is positioned as a lower-cost model that still beats Claude Fable 5 on key frontier benchmarks.

Its strongest gains are in coding and logical reasoning, including competitive results on benchmarks like Arc AGI and Frontier Bench.

The model is also described as practical for app development and some cybersecurity use cases.

The takeaway: for many teams, model selection may now hinge more on cost-performance tradeoffs than raw capability alone.