Claude's Opus 5 feature experienced elevated errors, affecting users of claude.ai, the Claude API, Claude Code, and Claude Cowork, with the issue resolved as of 4:47 PST/11:47 UTC. The incident was reported at 11:27 UTC on July 27, 2026. Incident reports are available on Atlassian Statuspage. AI summary
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The Claude Opus 5 service experienced elevated errors, affecting claude.ai, the Claude API, Claude Code, and Claude Cowork, and was resolved by 2:03 PST / 9:03 UTC on July 27, 2026. The incident was being investigated at the time of the article posting. AI summary