AI 导读
Claude Opus 5.5 发布，官方称其在多数任务上达到 Claude Fable 5.1 的水平，运行成本比 Opus 5 低 40%。作者补充说该模型表达清晰、token 效率高，覆盖各 effort 等级，同时提高了 5 小时速率限制并提供一次可存的额度重置。Opus 5.5 是新的 Claude 5.5 家族中的首个模型。
推荐理由
官方给出 Opus 5.5 与 Opus 5、Fable 5.1 的性能与成本对比，可用于判断升级的取舍。
正文
Opus 5.5 is the result of your feedback.
It communicates clearly, it's cheaper per token than Opus 5.0 with the intelligence of Fable 5.1, it’s very token efficient and works across every effort level.
We're also increasing 5h rate limits & giving you a banked reset. https://t.co/TCOIjB688Q
Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5. https://t.co/Q9C2VKQ79f在 X 查看被引用的帖子
来源：@trq212 · x.com