Produced by claude based on my extensive data - if there's any issues, it's because anthropic doesn't let claude think anymore ;) Unfortunately claude deleted my January logs containing a bulk of my work so only summary analysis is available - January was what I expect, Febuary started sliding, and March was a complete and utter loss.
Quantitative analysis of 17,871 thinking blocks and 234,760 tool calls across
6,852 Claude Code session files reveals that the rollout of thinking content
redaction (redact-thinking-2026-02-12) correlates precisely with a measured
quality regression in complex, long-session engineering workflows.
