rewindex

CompaniesAnthropicIncidents

Anthropic: Degraded performance for Claude Fable 5

MinorStatus: resolvededitedStarted Resolved (40 min)2 updatesstspg.io (opens in new tab)

Affected components: Claude CoworkClaude API (api.anthropic.com)claude.aiClaude Code

Timeline of updates

  1. investigating

    We are investigating elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible.

  2. resolved

    The issue affecting other Claude models has been resolved.

Changes Rewindex caught on this incident

Archive proof

Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves these records existed by then and have not been changed since, by anyone, Rewindex included.

How the archive is checked, and what it cannot prove.

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).

Cite this

Status incident (vendor impact label: minor) posted by Anthropic, started 2026-10-21 19:49 UTC, resolved after 40 min, 2 update(s); edited after publishing.

Title
Degraded performance for Claude Fable 5
Vendor
Anthropic
Date
URL
https://rewindex.com/company/anthropic/incidents/njk29r81v3wg

Anthropic profileRecent Anthropic incidentsAll outages on October 21, 2026Anthropic in October 2026MarkdownJSON