Elevated errors for Claude Sonnet 5.5 and other models

Timeline

1. 25 Oct · 07:53 UTC 🟡 Resolved atom

   Oct 25, 07:53 UTC
   Resolved - The issue affecting Claude services has been resolved. Impact occurred from 23:05 PT on October 24 / 06:05 UTC on October 25 to 23:35 PT on October 24 / 06:35 UTC on October 25.
   
   Oct 25, 06:35 UTC
   Monitoring - A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
   
   Oct 25, 06:27 UTC
   Identified - We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible.
   
   Oct 25, 06:14 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.

2. 25 Oct · 06:35 UTC 🟡 Monitoring atom

   Oct 25, 06:35 UTC
   Monitoring - A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
   
   Oct 25, 06:27 UTC
   Identified - We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible.
   
   Oct 25, 06:14 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.

3. 25 Oct · 06:27 UTC 🟡 Identified atom

   Oct 25, 06:27 UTC
   Identified - We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible.
   
   Oct 25, 06:14 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.

4. 25 Oct · 06:14 UTC 🟡 Investigating atom

   Oct 25, 06:14 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.