Anthropic's Claude API reported elevated error rates across multiple models on June 2, 2026, starting around 6:55 AM UTC. The company flagged the incident on its official status page within minutes of detection.
Elevated errors of this type typically mean a portion of API requests are returning server-side failures rather than the service going completely dark. Both Claude.ai users and developers hitting the API directly tend to see degraded performance during these windows.
For teams running production workflows, the practical steps are the same as any API degradation: check the status page for real-time updates and make sure your code handles 5xx error codes gracefully. Anthropic's API uses distinct status codes for rate limiting (429), server overload (529), and general server errors (500) - each calls for different retry behavior. Exponential backoff is the standard approach for 5xx responses.
No root cause or estimated resolution time was published at the time of this report. Anthropic typically posts a full incident summary, including cause and timeline, once an issue is closed.