Increased error rates on Opus 4.6 and 4.7 confirmed. Under investigation!
Increased Error Rates on Opus Versions 4.6 and 4.7
Original: Elevated error rates on Opus 4.6 and 4.7
Importance: エラー率の上昇はユーザーに直接影響を及ぼす可能性があるため。
Summary
On May 15, 2026, Anthropic announced ongoing investigations into elevated error rates on Opus versions 4.6 and 4.7. Users may experience impacts, necessitating close attention to the situation.
Key Points
- Increased error rates on Opus 4.6 and 4.7
- Currently under investigation
- User impact is a concern
View developer notes (APIs, breaking changes, migration)
As of May 15, 2026, Anthropic is investigating elevated error rates on Opus versions 4.6 and 4.7. No detailed technical information has been released yet, but user impacts are a concern.
Source: https://status.claude.com/incidents/8z7l5zcy0v3b
Outlet: Anthropic Status
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