Anthropic outage: Elevated errors for Claude Fable 5 and Claude Fable 5.1

Affected components

• Claude API (api.anthropic.com)
• Claude Code
• Claude Cowork
• claude.ai

1. resolvedOct 24, 2026, 05:53 UTC

   The issue affecting Claude services has been resolved. Impact occurred from 22:00 PT on October 23 / 05:00 UTC on October 24 to 22:35 PT on October 23 / 05:35 UTC on October 24.

2. monitoringOct 24, 2026, 05:41 UTC

   A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

3. identifiedOct 24, 2026, 05:40 UTC

   We have identified the cause of elevated errors on requests to other Claude models and are working on a fix. We will provide an update as soon as possible.

4. identifiedOct 24, 2026, 05:24 UTC

   We have identified the cause of elevated errors on requests to other Claude models and are working on a fix. We will provide an update as soon as possible.

5. investigatingOct 24, 2026, 05:16 UTC

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

What APIStatus.watch saw

• Oct 24, 2026, 05:18 UTCoperational → degraded
• Oct 24, 2026, 05:43 UTCdegraded → operational

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

• Snyk: Snyk Container Degradation in SNYK-US-01Major · Oct 22, 2026, 21:53 UTC
• Snyk: Snyk Test Down in SNYK-US-01Major · Oct 23, 2026, 14:10 UTC
• Twilio: Voice Call Post Dial Delay from a Subset of Twilio Phone Numbers to ThailandMinor · Oct 12, 2026, 11:53 UTC
• Twilio: SMS Delivery Delays and Failures from Twilio Short Codes to Multiple Networks in IndiaMinor · Oct 21, 2026, 16:32 UTC
• Supabase: Elevated Mgmt API Error Rates in Multiple RegionsMinor · Oct 22, 2026, 17:01 UTC
• Twilio: Voice Call Post Dial Delay from Twilio Phone Numbers to ChileMinor · Oct 23, 2026, 14:53 UTC
• Twilio: SMS Delivery Delays from a Subset of Twilio Phone Numbers to Telefonica NicaraguaMinor · Oct 23, 2026, 16:19 UTC
• Twilio: SMS Delivery Failures from Twilio to Multiple Networks in South AfricaMinor · Oct 23, 2026, 19:46 UTC
• Twilio: SMS Delivery Delays from a Subset of Twilio Short Codes and Long Codes to Claro BrazilMinor · Oct 23, 2026, 20:06 UTC
• Twilio: SMS Delivery Delays from Twilio to Claro Costa RicaMinor · Oct 24, 2026, 00:48 UTC

How often does Anthropic have incidents?

Anthropic reported 54 incidents in the last 90 days, 26 of them major or critical. A typical incident lasted 1h 2m. See Anthropic's uptime and incident history