Resolved · lasted 9 h
Claude outage on August 13
Reports for Claude jumped to 918 an hour and stayed high for 9 h.
- Started
- 1:00 PM
- August 13, 2026 · UTC
- Back to normal
- 10:00 PM
- 9 h later
- Peak
- 918/hr
- 29× normal
- Anthropic’s incident
- 1 h 35 min
- Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5
Reports during the outage
11:00 AM11:50 PM UTC
What Anthropic said
status.claude.comResolved2:33 – 4:08 PM · 1 h 35 min
Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5
- Resolved · 4:08 PM
The issue affecting Claude Mythos 5 and Claude Fable 5 has been resolved.
- Investigating · 3:44 PM
We are investigating elevated errors on requests to Claude Mythos 5 and Claude Fable 5. We will provide an update as soon as possible.
- Investigating · 2:33 PM
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.
Anthropic posted its first update 1 h 34 min after reports started rising.
What people said
- uwu1:42 PM
error 529
1 comments during the outage
Is Claude down right now?
Live status, today’s reports and other past outages.