Anthropic has released Claude Sonnet 4.5, which it unabashedly refers to as "the best coding model in the world." ...
Now, Claude Sonnet 4.5 has lapped that last model, outperforming it on the SWE-bench Verified evaluation, a human-filtered subset of the SWE-bench. Claude Sonnet 4.5 also outperformed leading models ...
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