Anthropic releases Claude Sonnet 5.5, over 30% faster than Sonnet 5 and up to 30% cheaper for most tasks

Claude Sonnet 5.5 发布，比 Sonnet 5 快超 30%、多数工作成本最多低 30%

Anthropic launched Claude Sonnet 5.5, the second model in the 5.5 family. It's over 30% faster than Sonnet 5 and up to 30% cheaper for most tasks. Positioned for well-scoped daily work like bug fixes and fast feature iteration; Claude Code usage will also last longer. The post doesn't disclose benchmark scores or availability regions.

Why it matters: Anthropic drops Claude Sonnet 5.5 with >30% speed boost and up to 30% lower cost for most tasks, targeting daily dev workflows. All three HKR axes hit: concrete numbers, clear audience, click-worthy headline. Held below 90 because the post gives no benchmarks or regional avail...