Anthropic Cuts 80% of System Prompt with No Drop in Performance

socialwithaayan · x · 2026-08-31

Responding to the news that Anthropic deleted over 80% of Claude Code's system prompt without a performance drop, the author suggests a cleanup order: delete duplicate instructions, replace prose with files, move detail closer to use, and retest. This reflects newer models' reduced tolerance for redundancy and the importance of efficient context management.

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