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ChangesClaudeElevated errors for Claude Sonnet 5.5

Claude: Major incident: Elevated errors for Claude Sonnet 5.5

Major incidentoutage (model (Jev), 99%)Changed Detected status.claude.com (opens in new tab)
Summary

Summary pending. The diff below shows exactly what changed.

Incident page: the full timeline of updates

What changed

Struck in red is what Claude removed; blue is what they added. Muted text is unchanged context.

AddedTitle#1
Before: not present
After: Elevated errors for Claude Sonnet 5.5
AddedImpact#2
Before: not present
After: major
AddedStatus#3
Before: not present
After: identified
AddedStart time#4
Before: not present
After: 2026-10-27 15:09 UTC
AddedAffected components#5
Before: not present
After: claude.ai, Claude API - api.anthropic.com, Claude Code, Claude Cowork
AddedUpdateidentified#6
Before: not present
After: We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.

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How the archive is checked, and what it cannot prove.

History of this incident

Tuesday, October 27

2 incident changes

Cite this

Major incident: Elevated errors for Claude Sonnet 5.5 on Claude’s status page, changed 2026-10-27 15:09 UTC (change 1 of 2).

Title
Major incident: Elevated errors for Claude Sonnet 5.5
Vendor
Claude
Date
URL
https://rewindex.com/change/i45272172bc071a

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