Anthropic 发布 Claude Fable 5.2 与 Mythos 5.2，IPO 前重夺性能领先
原标题：Claude Fable 5.2 and Mythos 5.2 cement Anthropic's AI lead just before its IPO
AI 摘要
Anthropic 发布 Claude Fable 5.2 与 Mythos 5.2 两款旗舰模型，称在训练中刻意阻止模型获得可能直接加速 AI 研发的能力。Fable 5.2 在 Artificial Analysis Intelligence Index v5 最高算力档以 65 分排名第一，领先 Gemini 4 Carbon 五分、领先前代 Fable 5.1 十五分，但单任务成本约 26.50 美元，为 Opus 5.5 的约 2.6 倍。两款模型共享同一基础，Fable 面向所有用户并屏蔽网络安全与生物领域高风险任务，Mythos 解除部分限制、仅向通过验证计划的组织开放。
正文节选
Claude Fable 5.2 and Mythos 5.2 cement Anthropic's AI lead just before its IPO Key Points - Anthropic is releasing Claude Fable 5.2 and Mythos 5.2, two new flagship models built for the most demanding technical tasks. Anthropic says it deliberately prevented the models from gaining capabilities during training that could directly accelerate AI development. - Fable 5.2 ranks first with 65 points on the Artificial Analysis Intelligence Index v5, five points ahead of Gemini 4 Carbon and 15 ahead of