Anthropic’s Opus 5 tops a ReactBench claim while costing more than 2× less
aidenybai · x · 2026-07-28
The post claims Opus 5 is Anthropic’s best Claude model on ReactBench, saying it outperforms Claude Fable 5 on frontend code while costing more than 2× less.
It is a model-performance claim focused on coding quality and price, not a workflow or product announcement.
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