Claude change history: Elevated errors across many models

Claude reported a major incident involving elevated errors across many models, affecting claude.ai, Claude API (api.anthropic.com), Claude Code and Claude Cowork. It started at 2026-07-30 05:57 UTC and was resolved at 2026-07-30 10:48 UTC, lasting 4 h 51 min; partial recovery was followed by renewed errors across all models.