Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family

Claude Sonnet 5.5 has been introduced as the second model in the Claude 5.5 family, serving as a faster, lower-cost complement to Claude Opus 5.5. It excels at everyday tasks, bug fixing, and creating polished documents, slides, and spreadsheets, with a strong eye for design. Sonnet 5.5 is a significant upgrade over Sonnet 5, running over 30% faster and costing up to 30% less for most work, primarily by requiring fewer tokens for the same tasks.