Anthropic releases Claude Opus 5.5, ~30% faster and ~40% cheaper

Anthropic 发布 Claude Opus 5.5，速度提升约 30%、成本低约 40%

Claude Opus 5.5 is the first model in the Claude 5.5 family. It matches Claude Fable 5.1 on most tasks and costs 40% less to run than Opus 5. Claude Devs adds it's ~30% faster per task. Claude Code's 5-hour session limit increased 20% today; lower pricing means 25% more usage within the cap. Pro, Max, and Team users also get a one-time quota reset. Terminal-Bench 4.0 scores lead across effort tiers.

Why it matters: Anthropic flagship model update with a double jump in speed and cost — a same-day must-write. Score stays below 90 because we only have the official tweet and community notes so far, no third-party benchmarks or cross-model comparisons yet.