Anthropic has released Claude Sonnet 4.5, its most advanced coding model to date, featuring major improvements in agentic tasks, long-horizon task performance, and computer use capabilities. The ...
Anthropic describes its new Opus 4.5 model as “intelligent, efficient, and the best model in the world for coding, agents, and computer use.” It follows Opus 4.1, which Anthropic released in August.
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