analysis
Anthropic Admits 3 Bugs Killed Claude Code For 50 Days: Inside The April 23 Postmortem
On April 23, 2026, Anthropic published an official postmortem admitting three production bugs — not one — degraded Claude Code quality between March 4 and April 20. We ran Claude Code daily through all of it. Here is the full breakdown: reasoning effort flip, caching bug, verbosity instruction, the v2.1.116 fix, the usage-limits reset, and the three new quality-control commitments.