When Anthropic unveiled Claude Sonnet 4.5, it wasn’t just another AI upgrade. The company called it their “most aligned frontier model” yet – one that doesn’t just generate text, but thinks, reasons, and codes across long, complex tasks. With this release, Anthropic is making an audacious claim: that Claude Sonnet 4.5 is the best coding model in the world.

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Raising the bar in benchmarks

At the heart of Anthropic’s case are numbers. On SWE-bench Verified, a leading benchmark for software problem-solving, Claude Sonnet 4.5 sets new highs, outperforming both its predecesso

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