Anthropic: Artificial Intelligence
2026-06-10 · Department for Science, Innovation and Technology · HL898 · Official question
Question
To ask His Majesty's Government what assessment they have made of the effectiveness of safeguards applied to Anthropic's Mythos artificial intelligence model and other frontier artificial intelligence systems.
Answer
The Government's world-leading AI Security Institute (AISI) has a dedicated red-team that tests the safeguards of frontier models. A summary of AISI's findings for Claude Mythos 5 and Fable 5 (a version of Mythos 5 with additional safeguards) are publicly...