We have identified the cause of elevated errors on requests to Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5, as well as fast mode requests to Opus 5.5 and are working on a fix. We will provide an update as soon as possible.
Posted Oct 23, 2026 - 23:39 UTC Investigating
We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.
Posted Oct 23, 2026 - 23:37 UTC This incident affects: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.
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