Claude Mythos 5はパートナー限定で公開──「安全な」Claude Fable 5は単なるダウングレードなのか?
AnthropicはClaude Mythos 5をパートナー向けに、Claude Fable 5を一般向けに公開したが、一般版は危険なクエリを旧モデルへリダイレクトして能力を制限し、サイバー攻撃を防いでいる。
anthropic launched claude mythos 5, offering the full model to industry partners and government collaborators under project glasswing while restricting the public claude fable 5. fable 5 automatically reroutes prompts involving cybersecurity, biology, chemistry, or model distillation to the older claude opus 4.8 to prevent exploitation. anthropic stated this cautious approach was necessary to safely release the model broadly, noting competitors will inevitably match mythos-level capabilities soon.