major✓ Resolved

Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

Anthropic (Claude)•2026-10-05 13:05 UTC

Status

resolved

Duration

19 minutes

Updates

Coverage

0 articles

INCIDENT TIMELINE

✓ Resolved2026-10-05 13:25 UTC

This incident has been resolved.

investigating2026-10-05 13:05 UTC

We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible.

Internal ID

8782c49b-ea49-440e-ab3e-cb697e6dda6b

External ID

bhphxz3vr58g

🕐 Started

2026-10-05 13:05 UTC

🔄 Last Updated

2026-10-05 13:25 UTC

✓ Resolved

2026-10-05 13:25 UTC

MAJOR

Impact Level

19 minutes

Total Duration

Status Updates

Affected Components

claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork

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