Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other models

Incident Report for Claude

Resolved

This incident has been resolved.

Posted Jul 25, 2026 - 22:08 UTC

Investigating

We are investigating elevated errors on requests to Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible.

Posted Jul 25, 2026 - 21:34 UTC

This incident affected: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.