Anthropic Releases Claude Fable 5, Its First Public Mythos-Class Model, With Guardrails for High-Risk Domains
Original: Anthropic’s Claude Fable is a version of Mythos the public can access today
Anthropic launches Claude Fable 5, the first publicly available Mythos-class model, with guardrails blocking high-risk cybersecurity and biology responses.
Anthropic has released Claude Fable 5, marking the first time a model from its high-capability Mythos family is available to the general public. The model includes built-in guardrails that restrict responses in high-risk domains such as cybersecurity and biology to mitigate misuse potential. The launch comes just days after Anthropic publicly warned that AI technology is becoming increasingly and alarmingly dangerous.
Anthropic 於 2026 年 6 月 9 日正式對外發布 Claude Fable 5，成為 Mythos 模型系列中首個向一般大眾開放使用的版本。Mythos 系列被視為 Anthropic 目前能力最強的模型家族，此前僅在受限範圍內使用，而 Fable 5 的公開發布代表著這一等級的 AI 能力首次走出研究機構或企業合作夥伴的範疇，讓更廣泛的用戶群得以直接體驗頂尖模型的實際表現。
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