Anthropic launches Claude Sonnet 5.5: 30%+ faster than Sonnet 5, up to 30% cheaper for most tasks

Claude Sonnet 5.5 发布：比 Sonnet 5 快 30% 以上，多数工作成本降低至多 30%

Anthropic released Claude Sonnet 5.5, the second model in the Claude 5.5 family. It runs 30%+ faster than Sonnet 5 and cuts costs by up to 30% for most workloads. Claude Code dev Thariq noted that Sonnet and Opus 5.5 make higher-level abstractions like projects, claude tag, and dynamic workflows more viable on token cost, and recommends trying Sonnet 5.5 first when building workflows. The post doesn't disclose specific benchmark scores or pricing figures.

Why it matters: Anthropic drops Sonnet 5.5 with two hard metrics: >30% speed gain and up to 30% cost reduction. Claude Code dev confirms it. Solid Claude-line update, clears featured threshold. Not 90+ because the post doesn't disclose benchmarks or availability timeline — only the tweet titl...