Anthropic 在 RSI 担忧之际发布 Mythos 5.2 和 Fable 5.2

发生了什么

Anthropic 发布了 Mythos 5.2 和 Fable 5.2，称其在编程、推理、视觉和用户沟通方面有所改进。Fable 的价格现为每百万输入 token 8 美元，响应速度提高了 30%，并通过 Enterprise Frontier Safeguards 支持零数据保留政策。此次发布紧随 METR 的一份报告之后，该报告称内部模型正以约 2 倍的速度推动 Anthropic 的 AI 进展；Anthropic 还谈到了评估模型现实世界行为和隐蔽能力所面临的挑战。

接下来读什么

• 今日还有哪些重要变化Google DeepMind 推出 Gemini 4 Hydrogen，加速智能体工作流

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.