Changes / Claude / Elevated errors for Claude Opus 5.5
Claude: Major incident: Elevated errors for Claude Opus 5.5
Summary
Claude reported a major incident involving elevated errors for Claude Opus 5.5 across claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork. It started at 2026-10-06 12:24 UTC and was resolved at 2026-10-06 12:43 UTC, lasting 18 min. Claude said it identified the cause but did not disclose the cause or fix.
Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.
What changed
Before: not present
After: Elevated errors for Claude Opus 5.5
Before: not present
After: major
Before: not present
After: resolved
Before: not present
After: 2026-10-06 12:24 UTC
Before: not present
After: 2026-10-06 12:43 UTC
Before: not present
After: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
Before: not present
After: We are investigating elevated errors on requests to Claude Opus 5.5. We will provide an update as soon as possible.
Before: not present
After: 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.
Before: not present
After: The issue affecting Claude Opus 5.5 has been resolved.
First version of this incident archived by Rewindex. View the live incident (opens in new tab).
History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: Elevated errors for Claude Opus 5.5 (this change) Claude reported a major incident involving elevated errors for Claude Opus 5.5 across claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork. It started at 2026-10-06 12:24 UTC and was resolved at 2026-10-06 12:43 UTC, lasting 18 min. Claude said it identified the cause but did not disclose the cause or fix. | Major incident |