Elevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5
Oct 24 , 00:11 UTC Resolved - The issue affecting Claude models has been resolved. Impact occurred from 16:28 PT / 23:28 UTC on October 23 to 16:59 PT / 23:59 UTC on October 23. Oct 23 , 23:54 UTC Monitoring - We are seeing success rates return to normal for all affected models, and are continuing to monitor to ensure no further issues. Oct 23 , 23:39 UTC Identified - We have identified the cause of elevated errors on requests to Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5, as well as fast mode requests to Opus 5.5 and are working on a fix. We will provide an update as soon as possible. Oct 2…
| Source | Anthropic Status |
|---|---|
| Fetched | 10/24/2026, 08:40 AM |
| Data | Markdown JSON |
On 10/24/2026, 08:39 AM, Anthropic Status published "Elevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5" (type: Outage / maintenance). Status is "Resolved". Related technologies: Anthropic (Claude).