Anthropic reports elevated error rates on Claude Opus 5
July 27, 2026
Anthropic experienced an incident causing elevated error rates for Claude Opus 5 across claude.ai, the Claude API, Claude Code, and Claude Cowork. The issue was investigated and resolved, with error rates returning to baseline as of 2:03 PST.
HOW THIS AFFECTS YOU
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builderYou should monitor service status for API reliability in production environments.