Opus/Sonnet 4.5 incident ongoing — production API calls need retry logic
Elevated errors on Claude Opus 4.5 and Sonnet 4.5
Original: Elevated errors on Claude Opus 4.5 and Sonnet 4.5
Importance: 本番環境のユーザーに即座に影響する障害であり、APIへのアクセス復旧まで代替手段が限定される
Summary
Anthropic's status page reports elevated error rates affecting Claude Opus 4.5 and Sonnet 4.5. Investigation began at May 4, 13:59 UTC. Users relying on these models via API or Claude.ai may experience service disruptions. Root cause and recovery timeline remain under investigation.
Key Points
- Error rates elevated on Opus 4.5 and Sonnet 4.5
- Investigation started May 4, 13:59 UTC
- Both API and Claude.ai potentially affected
- Recovery timeline not yet disclosed
View developer notes (APIs, breaking changes, migration)
API-level incident affecting Claude Opus 4.5 and Sonnet 4.5 models. Applications calling via developers.anthropic.com endpoints (REST API, Python/Node.js SDKs) and Claude.ai Web UI users impacted. Error rate elevation suggests possible server-side failures, timeouts, or quota exhaustion. Specific HTTP status codes and error messages not yet disclosed. Developers should implement fallback to Haiku or enforce exponential backoff retry logic. Monitor status.claude.com for updates; incident tracking ID 77j6yv8kc0vn.
Source: https://status.claude.com/incidents/77j6yv8kc0vn
Outlet: Anthropic Status
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