13:09
2026-07-26
machinebrief.com
artificial-intelligence
Claude Code Gutted Its System Prompt by 80% — And Nothing Broke. Here's What It Means
Anthropic removed more than 80% of Claude Code's system prompt for its newest models, Opus 5 and Fable 5, and reported no measurable loss across internal coding evaluations, according to a July 24 dis…