Anthropic incident: Elevated errors on Claude Haiku 4.5

1. resolvedMay 20, 2026, 08:49 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.

• Confluent Cloud: Elevated error rates and latency on produce and consume operations on AWS us-east-1 AZ4Major · May 8, 2026, 01:14 UTC
• Linode: [DirtyFrag] Linux Privilege Escalation VulnerabilityMinor · May 8, 2026, 13:40 UTC
• Linode: [Fragnesia] Linux Privilege Escalation VulnerabilityMinor · May 13, 2026, 21:02 UTC
• Twilio: Subset of AU Sender ID Registration Submissions Directly Transitioning to REJECTEDMinor · May 15, 2026, 20:51 UTC
• ClickHouse Cloud: GCP us-east1 capacity constraints impacting cluster operationsMinor · May 18, 2026, 12:31 UTC
• Twilio: Delay in Getting Twilio/flows Templates Approved on WhatsappMinor · May 18, 2026, 18:42 UTC
• Snyk: Supply Chain Compromise on  @antv being investigated for more than 300 packages in npm ecosystemMinor · May 19, 2026, 05:29 UTC
• Akamai: Reporting Issues affecting URL Traffic and URL Responses reportsMinor · May 19, 2026, 10:13 UTC
• Twilio: SMS Delivery Delays From Twilio to Multiple Networks in Multiple Countries in EuropeMinor · May 19, 2026, 13:21 UTC
• Snyk: Jira Integration DegradedMinor · May 19, 2026, 14:19 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