Synced reports Anthropic's most closely guarded mysterious “Model 4”,has been exposed! After secretly training from September to October, its internal comprehensive capability index (AECI) soared to the astonishing score of 178.6; the existing test battery can barely hold it back anymore. Today, the third-party evaluation organization METR released a major investigation. After grinding through 11 straight weeks and digging deep into Anthropic's sensitive i