← Claude status
INCIDENT IN PROGRESS
Claude
✓Elevated errors for multiple models
Updated
Confirmed disruption
00:57Started
1Timeline events
Confirmed by the official source.
Executive summary
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Summary
Claude has reported elevated errors affecting requests to multiple models. Fable and Mythos requests have returned to normal success rates, while errors affecting Opus 5 remain under investigation.
What users experienced
- User impact
Some requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 experienced elevated errors. The provider also marked claude.ai, the Claude API, Claude Code, and Claude Cowork as partially impacted.
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Started
00:5722 Sep 2026Timeline of the incident
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Detection
Confirmed by an official service source.
What we know
- ✓Claude officially reported elevated errors affecting requests to Mythos 5.1, Fable 5.1, and Opus 5.
- ✓The provider marked claude.ai, the Claude API, Claude Code, and Claude Cowork as experiencing a partial outage.
- ✓Claude stated that it had identified the cause and was working on a fix.
- ✓Fable and Mythos requests returned to normal success rates, while Opus 5 continued to experience errors at the latest update.