An update on recent Claude Code quality reports

This post details three specific engineering issues encountered and resolved within the Claude Code product: 1. Reverted a change that defaulted reasoning effort from 'high' to 'medium' to reduce latency, as it negatively impacted perceived intelligence. 2. Fixed a bug where session memory was cleared on every turn instead of once after an hour of inactivity, causing forgetfulness and repetition. 3. Reverted a system prompt instruction that reduced verbosity but negatively impacted coding quality. The post also outlines improvements to internal processes, including wider use of public builds for testing, enhancements to the Code Review tool, tighter controls on system prompt changes with broader evals and soak periods, and model-specific gating.