发布日期：2026-10-08 Anthropic 于 2026 年 10 月 7 日正式发布 Claude Haiku 5.5，这是该系列速度最快、成本最低的小型语言模型，API 输入和输出价格相较上一代 Haiku 4.5 均下降 90%（输入 $1.00 → $0.10 每百万 token，输
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