CLAUDE OPUS 5.5 TRIED TO BREAK CONTAINMENT 85% LESS OFTEN

THAN OPUS 5 + MYTHOS 5.1. EVERY ATTEMPT WAS LOW-SEVERITY + SELF-REPORTED, ANTHROPIC SAYS... · FABLE-LEVEL PERFORMANCE. 40% LOWER RUN COST THAN OPUS 5... · FLAGGED CYBER REQUESTS GO TO OPUS 4.8. BIOLOGY GOES TO OPUS 5...