Claude: Elevated errors across many models

Claude experienced elevated error rates across multiple models on June 16, 2026, with Sonnet and Opus models reaching approximately 10% error rates between 10:23-11:00 PT, followed by continued errors on Opus 4.8 and Haiku 4.5 until 12:20 PT. The incident has been resolved after a fix was implemented and is now being monitored.