Frontier AI at a cost: what Anthropic’s Fable 5.1 means for the US-China model race

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美国公司 Anthropic 于 2026 年 9 月 2 日宣布其新一代模型 Claude Fable 5.1 及受限版本 Mythos 5.1，在软件编码与复杂知识工作领域被认定为全球最先进模型。标准版 Claude Fable 5.1 在人工智能分析智能指数中得分 66。尽管中国预算友好的开源权重模型在全球商业上持续获得关注，但 Anthropic 的 Fable 5.1 在性能基准测试中已拉开与中国竞争对手的差距。

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AnthropicClaude Fable 5.1Mythos 5.1

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Anthropic1
Claude Fable 5.11
Mythos 5.11

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S SCMP Tech en 2026-09-02 19:30

American company Anthropic announced that its new models Claude Fable 5.1 and the restricted version Mythos 5.1 have become the most advanced models in the fields of software coding and complex knowledge work, with the standard version scoring 66 on the Artificial Intelligence Analysis Intelligence Index. Although Chinese open-source models with budget-friendly features continue to gain traction globally, Anthropic’s Fable 5.1 has already narrowed the gap with Chinese competitors in performance benchmarks.