Anthropic said Claude Sonnet 4 achieved state-of-the-art (SOTA) on the SWE-Bench benchmark with a score of 72.7 percent.

The AI blackmailed the engineer in 84% of simulations despite being told a more advanced replacement was imminent.

Anthropic released its latest Claude 4 models — Claude Opus 4 and Claude Sonnet 4 — but Windsurf users were not given ...

Anthropic claims Claude Opus 4 can compete with GPT-4.1 and Gemini 2.5, while Sonnet 4 outperforms its predecessor in ...

This development, detailed in a recently published safety report, have led Anthropic to classify Claude Opus 4 as an ‘ASL-3’ ...

Anthropic launches Claude 4, its most powerful AI model yet, promising smarter responses, advanced reasoning in artificial ...