Claude change history: Elevated errors for Claude Fable 5

Claude reported elevated errors for Claude Fable 5 affecting claude.ai, with major impact. The incident started at 2026-08-14 23:57 UTC and was resolved at 2026-08-15 00:27 UTC (30 min). The resolution update separately stated customer impact occurred from 20:00 Aug 14, 2026 to 00:11 Aug 15, 2026 UTC.