Anthropic change history: Elevated errors across many models

Anthropic reported a major incident with 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; models partially recovered before errors returned across all models.