Anthropic launches Claude Sonnet 5.5, over 30% faster than Sonnet 5

Anthropic 发布 Claude Sonnet 5.5，速度比 Sonnet 5 快超 30%

Anthropic released Claude Sonnet 5.5, running over 30% faster than Sonnet 5 with clearer writing, built for fast back-and-forth interactions. It's positioned apart from Opus 5.5, which handles complex judgment work—Sonnet 5.5 targets well-scoped daily tasks, bug fixes, and producing docs, slides, and sheets. The model is fully available now; Haiku 5.5 will join the lineup in a few weeks. The post doesn't disclose pricing or benchmark scores.

Why it matters: Anthropic's main workhorse model gets a clear positioning update with a tangible speed boost that directly impacts developer workflow. Score held below 85 because the post doesn't disclose pricing, benchmarks, or how the 30% speed claim was measured.