Anthropic has released Claude Sonnet 5, which is now the default model for its Free and Pro plans, as well as available via API. This new iteration shows significant improvements, particularly in coding benchmarks like SWE-bench Pro and Terminal-Bench 2.1, where it even surpasses the flagship Opus 4.8 model in certain tasks. While Opus 4.8 still holds a slight edge in some complex benchmarks, Sonnet 5's enhanced ability to handle multi-step tasks and its more accessible pricing make it a compelling choice for most users. AI
IMPACT Sets a new baseline for mid-tier models, potentially reducing reliance on top-tier models for everyday tasks and influencing pricing strategies.
RANK_REASON New model release from a frontier lab (Anthropic) with performance benchmarks and pricing details. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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