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

- Provider: [Anthropic](https://down.guide/anthropic)
- Level: confirmed
- Impact: Partial outage
- lasted 1h 35m
- started 2026-08-13 14:33 UTC
- claude.ai, Claude API (api.anthropic.com), Claude Code +1
- id: DWN-3e8957d4f4
- Official page: https://stspg.io/pbnrks0mrn4w

## Updates from Anthropic
### 2026-08-13 14:33 UTC: investigating
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.

### 2026-08-13 15:44 UTC: investigating
We are investigating elevated errors on requests to Claude Mythos 5 and Claude Fable 5. We will provide an update as soon as possible.

### 2026-08-13 16:08 UTC: resolved
The issue affecting Claude Mythos 5 and Claude Fable 5 has been resolved.

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