Degraded performance for Claude Opus 5, Claude Sonnet 5 Anthropic reported degraded performance for Claude Opus 5 and Claude Sonnet 5, with users able to subscribe to email or SMS updates for incident notifications. The status page indicates ongoing issues affecting these AI models, though specific details on the cause or impact were not provided. Subscribe to updates for Degraded performance for Claude Opus 5, Claude Sonnet 5 via email and/or text message. You'll receive email notifications when incidents are updated, and text message notifications whenever Claude creates or resolves an incident. To receive SMS updates, please verify your number. To proceed with just email click ‘Subscribe’