Claude Status · History · Incident #6384

RESOLVED

Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5

Major · Started Aug 13, 2026 · 2:33 PM

Duration

1h 34m
Severity

Major
Detection lead

—
User reports

Peak 3/hr

Summary

Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5

The issue affecting Claude Mythos 5 and Claude Fable 5 has been resolved.

Started

Aug 13, 2026 · 2:33 PM
Resolved

Aug 13, 2026 · 4:08 PM
Duration

1h 34m
Severity

Major

Event timeline

How this incident unfolded

◐

Investigating
Aug 13 · 2:33 PM Claude

We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5. We will provide an update as soon as possible.
◐

Investigating
Aug 13 · 3:44 PM Claude

We are investigating elevated errors on requests to Claude Mythos 5 and Claude Fable 5. We will provide an update as soon as possible.
✓

Resolved
Aug 13 · 4:08 PM Claude

The issue affecting Claude Mythos 5 and Claude Fable 5 has been resolved.

User reports · incident window

Report volume over time

Hourly report count. Red bars mark the incident window.

Peak: 3 reports/hr

← Before incident After →

Pattern

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