Anthropic: 'We made the wrong tradeoff' in new model guardrails

• Anthropic reversed its policy on Claude Fable 5’s secret safeguards after AI community backlash.
• Claude Fable 5 now visibly reroutes flagged AI requests to Opus 4.8.
• Anthropic’s Mythos model remains a concern for national security due to its advanced capabilities.

Researchers and Anthropic itself have flagged that Mythos may be used to accelerate cyberattacks, aid biological or chemical weapons research, and give foreign actors a dangerous new tool. The model is being released to a limited group of government and other approved users, not to the public.