Opus 5 & Haiku 4.5 hit elevated errors; root cause identified, fix underway—recovery time TBA
Degraded performance detected for Claude Opus 5 and Claude Haiku 4.5
Original: Degraded performance for Claude Opus 5 and Claude Haiku 4.5
Importance: 本番環境での複数モデルエラー率上昇は、既存ユーザーの稼働中システムに直接影響
Summary
Anthropic reported elevated error rates on requests to Claude Opus 5 and Claude Haiku 4.5 on their status page. As of Aug 19, 09:42 UTC, the root cause was identified and a fix is in progress. No specific timeline for resolution was provided in the incident update.
Key Points
- Error rate spike detected on Opus 5 and Haiku 4.5
- Root cause identified as of Aug 19 morning UTC
- Fix in progress; no ETA announced
- Scope of impact not yet detailed in status update
View developer notes (APIs, breaking changes, migration)
Error rate elevation on Claude Opus 5 and Claude Haiku 4.5 API endpoints (likely Messages API). Root cause identified; fix in progress. Production impact ongoing; developers should prepare retry logic, fallback mechanisms, or temporary model switching (e.g., to Claude Sonnet). No ETA published; watch status.claude.com for updates.
Source: https://status.claude.com/incidents/hkcw95k7r0f4
Outlet: Anthropic Status
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