Anthropic 的 Claude Fable 5.2 和 Mythos 5.2 重夺 AI 性能领先地位

发生了什么

据 The Decoder 报道，Anthropic 的 Claude Fable 5.2 和 Mythos 5.2 在多个基准测试中重夺 AI 性能领先地位，而 Opus 5.5 仍是该公司推荐的日常使用模型。Fable 面向所有用户开放，并设有防护措施以阻止高风险的网络安全和生物学任务；Mythos 则取消了部分限制，仅向通过 Anthropic 验证计划申请的组织开放。Artificial Analysis 在其当前的 Index v5 中，将采用最高计算量档位的 Fable 5.2 排在首位，不过文章指出，它在智能体知识工作和基于终端的编程方面表现较弱。

接下来读什么

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这件事到目前为止

Anthropic released Claude Fable 5.2 and Claude Mythos 5.2, lowering API prices to $8 per million input tokens and $40 per million output tokens, from $10 and $50. Anthropic says both models improve coding, reasoning, and vision, and that Fable produces responses faster than version 5.1. Fable is available to paid users with safeguards for risky cybersecurity and biology tasks; Mythos is limited to organizations approved through Anthropic’s verification programs. The launch reports cite strong benchmark results, including Fable’s first-place score on Artificial Analysis’ Intelligence Index v5 at its highest compute tier. Those figures come from the named benchmark evaluations; Anthropic’s prerelease examples also include software migrations, electronic devices, and physics problems. TechCrunch reports that an optional faster serving mode costs twice as much, while the lower API prices apply to standard use.