Anthropic launches Claude Opus 5.5, 40% cheaper to run than Opus 5

Anthropic 发布 Claude Opus 5.5，Claude 5.5 系列首个模型

Anthropic dropped Claude Opus 5.5, the first model in the Claude 5.5 family. The company claims it matches Claude Fable 5.1 on most tasks and costs 40% less to run than Opus 5. The post doesn't share benchmark scores, pricing, or a rollout timeline—I'd hold off on the 'matches Fable 5.1' claim until third-party evals land.

Why it matters: Anthropic launches Claude 5.5 series with Opus 5.5, claiming 40% cost reduction while matching Fable 5.1 on most tasks — a price/performance story with real buzz. But zero benchmarks, pricing, or timeline in the post, so capped at 78. Will raise once third-party evals land.