Anthropic 发布 Claude Fable 5.1 和 Mythos 5.1，成本降低但争议犹存
原标题：Anthropic's Claude Fable 5.1 promises better coding and research at up to 45 percent less
AI 摘要
Anthropic 发布了 Claude Fable 5.1 和 Mythos 5.1 两款新模型，在编码和智能体基准测试上表现优异，同时通过降低缓存读取成本使典型任务成本降低约 25%，复杂智能体工作流成本降低高达 45%。然而，Artificial Analysis 指出，在最大努力模式下，Fable 5.1 因输出 token 更多，实际每任务成本比 Fable 5 高 20%。新模型还首次内置水印，并提供检测 API，同时放宽了网络安全和生物学的安全过滤，减少了误报。
正文节选
Anthropic's Claude Fable 5.1 promises better coding and research at up to 45 percent less Key Points - Anthropic has released two new models, Claude Fable 5.1 and Mythos 5.1, delivering stronger coding performance and better text quality. - Cheaper cache reads cut costs across the board, saving about 25 percent on typical tasks and enabling savings of up to 45 percent on complex agentic workflows. - Fable 5.1 outperforms its predecessor Fable 5 and rival GPT-5.6 Sol on agentic benchmarks. It's a