Anthropic launches Claude Opus 5.5, matches Fable 5.1 performance at 40% lower cost

Anthropic 发布 Claude Opus 5.5，性能对标 Fable 5.1 且运行成本降 40%

Anthropic dropped Claude Opus 5.5, the first model in the 5.5 family. It matches Fable 5.1 on most tasks and costs 40% less to run than Opus 5. The author notes clearer communication, better token efficiency, and availability across all effort levels. The 5-hour rate limit is raised and a banked reset feature is added. The post doesn't disclose specific benchmarks or pricing.

Why it matters: Anthropic drops Claude Opus 5.5, claiming Fable 5.1-level performance with 40% lower running cost vs Opus 5, plus a raised rate limit and banked reset. A substantive flagship update that directly addresses long-standing user complaints about cost and limits. Not scoring higher...