Claude Opus 5.5 experienced elevated error rates affecting both claude.ai and the Anthropic API for approximately 22 minutes on October 6, 2026. The cause was identified during the incident and a fix was applied. The issue was fully resolved within the same incident window.
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The issue affecting Claude Opus 5.5 has been resolved.
We have identified the cause of elevated errors on requests to Claude Opus 5.5 and are working on a fix. We will provide an update as soon as possible.
We are investigating elevated errors on requests to Claude Opus 5.5. We will provide an update as soon as possible.
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