Partial outageAnthropic ・ July 18, 2026
Elevated error rates for Sonnet 5
A record of the Anthropic incident on July 18, 2026 (Japan time): start time, duration and severity, plus current status, what to do, and alternatives.
Started
Jul 18, 2026, 03:12 AM
Resolved
Jul 18, 2026, 03:27 AM
Duration
15m
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
- Microsoft Office add-in availabilityJuly 23, 2026
- Service disruption on Claude ServicesJuly 23, 2026
- Elevated error rates for Sonnet 5July 23, 2026
- Elevated errors on Opus 4.8 and Haiku 4.5July 22, 2026
- Elevated errors for Claude Opus 4.1July 22, 2026