Elevated errors for multiple models

Timeline

1. 22 Sep · 02:35 UTC 🟠 Resolved atom

   Sep 22, 02:35 UTC
   Resolved - This issue has been resolved. Impact occurred from 5:50pm PT / 00:50 UTC to 7:10pm PT / 02:10 UTC.
   
   Sep 22, 02:11 UTC
   Monitoring - We have seen success rates return to normal across affected models, and are monitoring closely to ensure no further issues.
   
   Sep 22, 01:35 UTC
   Update - We are continuing to work to resolve errors affecting some models. At this time, requests to Claude Fable 5 and 5.1 and Mythos 5 and 5.1 have returned to normal success rates. We are working to resolve remaining errors affecting Claude Opus 5, and will provide an additional update shortly.
   
   Sep 22, 01:17 UTC
   Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.
   
   Sep 22, 00:57 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.

2. 22 Sep · 02:11 UTC 🟠 Monitoring atom

   Sep 22, 02:11 UTC
   Monitoring - We have seen success rates return to normal across affected models, and are monitoring closely to ensure no further issues.
   
   Sep 22, 01:35 UTC
   Update - We are continuing to work to resolve errors affecting some models. At this time, requests to Claude Fable 5 and 5.1 and Mythos 5 and 5.1 have returned to normal success rates. We are working to resolve remaining errors affecting Claude Opus 5, and will provide an additional update shortly.
   
   Sep 22, 01:17 UTC
   Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.
   
   Sep 22, 00:57 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.

3. 22 Sep · 01:35 UTC 🟠 Identified atom

   Sep 22, 01:35 UTC
   Update - We are continuing to work to resolve errors affecting some models. At this time, requests to Claude Fable 5 and 5.1 and Mythos 5 and 5.1 have returned to normal success rates. We are working to resolve remaining errors affecting Claude Opus 5, and will provide an additional update shortly.
   
   Sep 22, 01:17 UTC
   Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.
   
   Sep 22, 00:57 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.

4. 22 Sep · 01:17 UTC 🟡 Identified atom

   Sep 22, 01:17 UTC
   Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.
   
   Sep 22, 00:57 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.

5. 22 Sep · 00:57 UTC 🟡 Investigating atom

   Sep 22, 00:57 UTC
   Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.