# Anthropic: Incident updated: Degraded performance for Claude Fable 5.1

> Incident updated: Degraded performance for Claude Fable 5.1. Detected 2026-11-08 by Rewindex: what changed on Anthropic’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/rfca3220881f199
Last updated: 2026-11-08T08:43:44Z

**Summary:** _summary pending_
- Kind: Incident update · Label: Normal progress (rule)
- Changed: 2026-11-08 08:43 UTC · Detected: 2026-11-08 08:43 UTC
- [Source: https://status.claude.com/incidents/kw2lxj1th04c](https://status.claude.com/incidents/kw2lxj1th04c)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)
- Versions: before incident\_version:1/kw2lxj1th04c@0233ce996501 → after incident\_version:1/kw2lxj1th04c@31e722a56d8c
- Change 1 of 2 for this incident

Incident page (full timeline): [Degraded performance for Claude Fable 5.1](https://rewindex.com/company/anthropic/incidents/kw2lxj1th04c.md)
## What changed

**1. Changed: Status**

```diff
- investigating
+ monitoring
```

**2. Added: Update** (monitoring) · 2026-11-08 08:39 UTC

```diff
+ A fix has been deployed for Claude Fable 5.1 and we are monitoring for recovery.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-11-08 08:43 UTC | Incident updated: Degraded performance for Claude Fable 5.1 (this change) | Normal progress |
| 2026-11-08 09:03 UTC | [Incident updated: Degraded performance for Claude Fable 5.1](https://rewindex.com/change/r606ead91760fc8.md) | Normal progress |

Next: [change](https://rewindex.com/change/r606ead91760fc8.md) · All Anthropic changes: [timeline](https://rewindex.com/company/anthropic/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._

## Cite this

Incident updated: Degraded performance for Claude Fable 5.1 on Anthropic’s status page, changed 2026-11-08 08:43 UTC (change 1 of 2).

- Canonical URL: https://rewindex.com/change/rfca3220881f199
- Citation: Anthropic, “Incident updated: Degraded performance for Claude Fable 5.1” (2026-11-08 08:43 UTC). Archived by Rewindex: https://rewindex.com/change/rfca3220881f199 (CC BY 4.0).
- Markdown link: `[Anthropic: Incident updated: Degraded performance for Claude Fable 5.1 (2026-11-08)](https://rewindex.com/change/rfca3220881f199)`


---
Canonical: https://rewindex.com/change/rfca3220881f199 · Markdown: https://rewindex.com/change/rfca3220881f199.md · JSON: https://rewindex.com/api/v1/changes/rfca3220881f199 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-08T17:50:09.379Z