Anthropic’s Opus 5 is called the first Western “benchmaxxed” model

rickasaurus · x · 2026-07-27

The post argues that Opus 5 may be the first Western model to be heavily benchmark-optimized, calling it a case of "benchmaxxing" and saying Anthropic has overcooked it.

It also criticizes Sonnet 5, describing it as mostly useless and saying many users skipped it because, in practice, it cost more to use than Opus.

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