Anthropic launched its latest AI model, Claude Sonnet 5.5, on Monday, describing it as a "clear upgrade over" its predecessor, running 30% faster and costing up to 30% less for most work.
"Sonnet 5.5 improves on Sonnet 5 across domains—in some cases dramatically. On several evaluations, Sonnet 5.5 at Max effort even performs comparably to Opus 5.5. However, benchmark scores capture only one facet of a model's capabilities; in our own testing, and in that of external testers, Opus 5.5 remains clearly stronger at complex, open-ended work requiring sustained judgment," the company detailed. It also said it is better at coding, completing scoped tasks and creating documents, slides and spreadsheets.
