# Anthropic: Degraded performance for Claude Fable 5.1

> Anthropic status incident “Degraded performance for Claude Fable 5.1” on 2026-11-08: impact minor (vendor’s label), 26 min, 3 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/anthropic/incidents/kw2lxj1th04c
Last updated: 2026-11-08T09:03:49Z

- Impact (vendor’s label): minor
- Status: resolved · edited after publishing
- Started: 2026-11-08 08:28 UTC · Resolved: 2026-11-08 08:54 UTC · Duration: 26 min
- Updates: 3 · Affected components: claude.ai, Claude API - api.anthropic.com, Claude Code, Claude Cowork
- [Vendor status page: https://status.claude.com/incidents/kw2lxj1th04c](https://status.claude.com/incidents/kw2lxj1th04c)
- [Company: Anthropic](https://rewindex.com/company/anthropic.md)

## Timeline of updates

- **investigating** 2026-11-08 08:28 UTC: We are investigating elevated errors on requests to Claude Fable 5.1. We will provide an update as soon as possible.
- **monitoring** 2026-11-08 08:39 UTC: A fix has been deployed for Claude Fable 5.1 and we are monitoring for recovery.
- **resolved** 2026-11-08 08:54 UTC: The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 00:18 PT / 08:18 UTC on Nov 8 to 00:32 PT / 08:32 UTC on Nov 8.

## Rewindex changes for this incident

- 2026-11-08 08:43 UTC: [Incident updated: Degraded performance for Claude Fable 5.1](https://rewindex.com/change/rfca3220881f199.md)
- 2026-11-08 09:03 UTC: [Incident updated: Degraded performance for Claude Fable 5.1](https://rewindex.com/change/r606ead91760fc8.md)

## Cite this

Status incident (vendor impact label: minor) posted by Anthropic, started 2026-11-08 08:28 UTC, resolved after 26 min, 3 update(s); edited after publishing.

- Canonical URL: https://rewindex.com/company/anthropic/incidents/kw2lxj1th04c
- Citation: Anthropic, “Degraded performance for Claude Fable 5.1” (2026-11-08 08:28 UTC). Archived by Rewindex: https://rewindex.com/company/anthropic/incidents/kw2lxj1th04c (CC BY 4.0).
- Markdown link: `[Anthropic: Degraded performance for Claude Fable 5.1 (2026-11-08)](https://rewindex.com/company/anthropic/incidents/kw2lxj1th04c)`


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Canonical: https://rewindex.com/company/anthropic/incidents/kw2lxj1th04c · Markdown: https://rewindex.com/company/anthropic/incidents/kw2lxj1th04c.md · JSON: https://rewindex.com/api/v1/companies/anthropic/incidents/kw2lxj1th04c · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-08T17:41:21.873Z