Claude change history

Elevated errors for multiple modelsHN

Claude reported a major incident starting 2026-10-25 06:14 UTC: elevated request errors for Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5, affecting claude.ai, Claude API - api.anthropic.com, Claude Code, and Claude Cowork. It remained under investigation and open when archived, 0 min at the last update.