Elevated errors for Claude Sonnet 5.5
A record of the Anthropic incident on October 27, 2026 (UTC): start time, duration and severity, plus current status, what to do, and alternatives.
Other providers down at the same time
1 other incident(s) at different providers overlapped with this one. It may not have been limited to a single service — several providers were degraded at once.
- OpenAI6.1 Sol Degraded Model Performance
Derived from our own archive of official status pages across 13 providers. Items lasting more than 24 hours and unresolved items are excluded, as they would misrepresent the moment.
How big was this outage?
This outage lasted 41 minutes. Across 70 major incidents recorded for Anthropic, the median duration is 73 minutes, making this the 47th longest.
Shorter than a typical outage.
Only incidents recorded as major-or-worse and already resolved are counted.
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.