Partial outageAnthropic ・ July 26, 2026
Elevated errors for Mythos 5, Fable 5, Opus 5 and Claude Haiku 4.5
A record of the Anthropic incident on July 26, 2026 (Japan time): start time, duration and severity, plus current status, what to do, and alternatives.
Started
Jul 26, 2026, 03:40 AM
Resolved
Jul 26, 2026, 04:44 AM
Duration
1h 4m
Impact
Partial outage
Current status
Anthropic is operating normally now. This incident has been resolved.
See current Anthropic status →What you can do during an outage
Source: Anthropic's official status page.
Other Anthropic incidents
- Degraded performance on Claude Sonnet 5July 31, 2026
- Degraded performance on Claude Opus 4.8July 30, 2026
- Elevated errors across many modelsJuly 30, 2026
- Elevated errors across all modelsJuly 30, 2026
- Elevated errors on Claude Opus 5 and Haiku 4.5July 27, 2026