Five prompt lines that cost you twice

Five prompt lines that cost you twice Read time: 3 minutes You added the line to make it better. "Double-check your work." "Be maximally thorough." "CRITICAL: YOU MUST ALWAYS." Anthropic's engineering team just measured what those lines do. They make the answer worse and they make it cost more, at the same time. On one customer support benchmark, running a prompt audit and deleting lines like those cut cost 14.6% and raised accuracy 5.3%. That was the audit alone.Nothing added. The five...