Anthropic has released new iterations of its AI models, Claude Opus 4 and Sonnet 4. These updates represent advancements in the company's AI model development, building upon previous versions. The specific capabilities and improvements of Opus 4 and Sonnet 4 are detailed in the provided context. AI
IMPACT Represents the latest advancements in Anthropic's large language model capabilities.
RANK_REASON Frontier-lab model release with system card [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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