Anthropic Releases Claude Fable 5.2 and Claude Mythos 5.2…
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Anthropic has released two new models, Claude Fable 5.2 and Claude Mythos 5.2, which share the same underlying architecture and differ in safety guardrail mechanisms and access permissions. Fable 5.2 scored 64.9% on the RoboDojo Sim robotics simulation benchmark, higher than the previous generation Fable 5.1's 27.6%, Opus 5.5's 39.4%, and GPT-6 Astra's 29.8%; on the BenchCAD 2.1 test it scored 83.5 points, up from 44.4 points for the previous generation. Anthropic also partnered with Diode to use the models to autonomously complete component selection, four-layer PCB routing, 3D enclosure CAD modeling, and software writing, designing three working devices. The two models' output speed is up to 30% faster than the previous generation and supports a fast mode of up to 2.5x speed. Fable 5.2 is now available to users and developers, while Mythos 5.2 is aimed at verified professional organizations.
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The original text provides the specific scores of the two new models on robotics control and 3D engineering design benchmarks, allowing comparison of capability changes against the previous generation and competitors.
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11月9日，Anthropic正式发布Claude Fable 5.2与Claude Mythos 5.2两款新模型，在编程、推理、视觉理解等能力提升的同时，进一步拓展机器人控制、3D工程设计和实体硬件开发等应用场景。据介绍，两款模型采用相同底层架构，主要区别在于安全防护机制及访问权限。
机器人控制方面，Claude Fable 5.2展现出较强的复杂任务执行能力。在RoboDojo Sim机器人仿真基准测试中，该模型取得64.9%的成绩，高于上一代Fable 5.1的27.6%、Opus 5.5的39.4%及GPT-6 Astra的29.8%。Anthropic还展示了模型控制真实机器人完成魔方操作、旋开瓶盖、绘画等任务的演示，体现通用大模型向物理世界交互领域的进一步延伸。
3D工程设计方面，Fable 5.2在BenchCAD 2.1测试中获得83.5分，明显高于Fable 5.1的44.4分。该基准主要评估模型生成的几何结构与电路设计和参考方案的匹配程度。
与此同时，Anthropic联合电子设计公司Diode开展硬件开发实验。模型根据自然语言需求，自主完成元器件选型、四层PCB电路板布线、3D外壳CAD建模及软件编写，最终设计出家庭语音助手、USB会议扬声器和掌上电子宠物三款可正常工作的设备。
性能方面，两款模型的输出生成速度较上一代最高提升30%，并支持最高2.5倍速的快速模式。目前Fable 5.2已向用户及开发者开放，Mythos 5.2则主要面向通过验证的专业机构。
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