Say hello to Claude Sonnet 4.5, which Anthropic calls 'the best coding model in the world'

Anthropic has formally announced Claude Sonnet 4.5, a new AI model specifically made for coding. Anthropic didn’t mince any ...
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Anthropic's New Claude Sonnet 4.5 AI Model Promises to Be a Coding Beast

Claude Sonnet 4.5 is out today and brings major coding improvements, including checkpoints, code execution, file creation and ...

Claude Sonnet 4.5 could be your next breakthrough coding tool - how to access it today

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 ...