Anthropic Releases Claude Fable 5 and Mythos 5, State-of-the-Art AI Models
English summary
Anthropic launched Claude Fable 5, a Mythos-class 1 model, claiming state-of-the-art performance on nearly all tested benchmarks with exceptional capabilities in software engineering, knowledge work, vision, and scientific research. Fable 5 is safe for general use but conservative safeguards block some harmless requests in under 5% of sessions. The company also released Claude Mythos 5, identical to Fable 5 but with lifted safeguards in specific areas, initially deployed through Project Glasswing in collaboration with the US government for cyberdefenders and infrastructure providers. Mythos 5 is described as having the strongest cybersecurity capabilities of any model. Anthropic plans to expand Mythos 5 access via a trusted access program.
Chinese summary
Anthropic 发布 Claude Fable 5，这是 Mythos 级 1 模型，在几乎所有测试基准上达到最先进水平，在软件工程、知识工作、视觉和科研等领域表现卓越。Fable 5 面向公众安全可用，但保守的防护措施会偶尔误拦无害请求，平均触发率低于 5% 的会话。同时推出 Claude Mythos 5，与 Fable 5 底层模型相同，但部分安全限制被解除，首批通过 Project Glasswing 与美国政府合作为网络防御者和基础设施提供商部署，据称拥有全球最强的网络安全能力。Anthropic 计划通过可信访问计划扩大 Mythos 5 的使用范围。
Key points
Claude Fable 5 is a Mythos-class 1 model that is state-of-the-art on nearly all tested benchmarks, especially excelling in software engineering, knowledge work, vision, and scientific research.
Claude Fable 5 是 Mythos 级 1 模型，在几乎所有测试基准上达到最先进水平，尤其在软件工程、知识工作、视觉和科研方面表现卓越。
Fable 5 includes safeguards that sometimes reject innocuous requests (triggering in <5% of sessions) to mitigate misuse risks.
Fable 5 内置防护措施，有时会误拦无害请求（触发率低于 5% 会话），以降低滥用风险。
Claude Mythos 5 is the same model with lifted safeguards in some areas, initially reserved for cyberdefenders and infrastructure providers via Project Glasswing with US government collaboration.
Claude Mythos 5 与 Fable 5 同架构，但部分安全限制被解除，首批通过 Project Glasswing 与美国政府合作提供给网络防御者和基础设施提供商。
Anthropic claims Mythos 5 has the strongest cybersecurity capabilities of any model and plans to broaden access through a trusted access program.
Anthropic 声称 Mythos 5 拥有全球最强的网络安全能力，并计划通过可信访问计划扩大使用范围。