Anthropic launches Claude Sonnet 5.5 with task cost reductions

Anthropic has released Claude Sonnet 5.5, a mid-tier model nearing Opus 5.5 performance. The updated model operates over 30% faster and reduces task completion costs by up to 30% via fewer tokens and tool calls. API pricing remains at $2 per million input tokens and $10 per million output tokens, with cache reads at $0.20 and writes at $2.50 per million.