Minor incident

Anthropic (Claude): Degraded performance for Claude Fable 5

Oct 21, 2026, 19:49 UTC

started

20:29 UTC

resolved

40 min

duration

Affected: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork

Current status of Anthropic (Claude): Operational — live Anthropic (Claude) status

Timeline

Oct 21, 2026, 19:49 UTC
investigating
We are investigating elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible.
Oct 21, 2026, 20:29 UTC
resolved
The issue affecting other Claude models has been resolved.

Updates as published by Anthropic (Claude) (original).

This was part of a wider event: 109 services reported incidents within the hour.

LogicMonitor 20:45 UTC · LogicMonitor is currently investigating potential impacts to our Account Access Component(s).
Parchment 20:45 UTC · Instructure is aware of CVE-2026-109618 and CVE-2026-109619 (referred to as "PHP2Shell"), affecting PHP.
Instructure 20:43 UTC · PHP awareness
Kandji 20:37 UTC · Slow Load Times in the Iru Web App
impact.com 20:23 UTC · General Reporting Delay - Actions only (Tracking Unaffected)
UserTesting 20:12 UTC · Tree Test and Card Sort
Kaseya 20:08 UTC · RocketCyber - EU Region - Pages loading slow or not at all
Lightspeed Systems 20:07 UTC · PHP Security Update
Paddle 20:04 UTC · Issue affecting metrics and reporting in the seller dashboard
SEVENROOMS 19:50 UTC · SevenRooms OS – Delayed Real-Time Updates Due to Google Firebase Incident
Circle 19:46 UTC · CCTP Attestations - Delays/Degraded Performance
UVic IT 19:45 UTC · Critical Security Vulnerability Affecting UVic Services
HackerOne 19:45 UTC · Slow response times and report sidebar outage
uchicago 19:43 UTC · Web Service Outage
OpenText 19:37 UTC · Core US services were unavailable