Anthropic outage: Elevated errors for Claude Sonnet 4.6 and Haiku 4.5

1. resolvedMay 12, 2026, 20:13 UTC

   This incident has been resolved.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Anthropic's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

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• Twilio: SMS Delivery Failures from a Subset of Twilio Short Codes to Google Voice United StatesMinor · May 4, 2026, 20:40 UTC
• Shippo: Royal Mail InterSoft Tracking Degradation (Third-Party Issue)Minor · May 4, 2026, 20:48 UTC
• Twilio: SMS Delivery Delays from Twilio to Multiple Networks in Multiple Countries in EuropeMinor · May 7, 2026, 08:07 UTC
• Linode: [DirtyFrag] Linux Privilege Escalation VulnerabilityMinor · May 8, 2026, 13:40 UTC
• Twilio: Voice Call Audio Quality Degradation between a Subset of Twilio United States Phone Numbers and T-Mobile in United StatesMinor · May 11, 2026, 16:04 UTC
• ReadMe: Degraded performance across Admin HubsMinor · May 12, 2026, 14:15 UTC
• Twilio: SMS Delivery Delays from a Subset of Twilio Short Codes to C-Spire United StatesMinor · May 12, 2026, 16:24 UTC
• Twilio: Customer Low Balance Notification and Automatic Recharge of Balance Is Not WorkingMinor · May 12, 2026, 17:09 UTC

How often does Anthropic have incidents?

Anthropic reported 85 incidents in the last 90 days, 32 of them major or critical. A typical incident lasted 1h 7m. See Anthropic's uptime and incident history