ChangesAnthropicElevated errors for Claude Opus 5.5
Anthropic: Major incident: Elevated errors for Claude Opus 5.5
Anthropic reported a major incident involving elevated errors on Claude Opus 5.5 requests, affecting claude.ai, Claude API - api.anthropic.com, Claude Code, and Claude Cowork. It started at 2026-10-24 00:31 UTC and was still open when archived, open for 0 min at the last update; Anthropic was investigating, with no cause or fix stated.
Machine-written from the diff below (Sol; type: incident outage). Check the diff before relying on it.
Incident page: the full timeline of updates
What changed
Struck in red is what Anthropic removed; blue is what they added. Muted text is unchanged context.
First version of this incident archived by Rewindex. View the live incident (opens in new tab).
Archive proof
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How the archive is checked, and what it cannot prove.
Rewindex captured this after the last checkpoint; the next run () commits it.
History of this incident
TodaySaturday, October 24Sat, Oct 24
2 incident changes
- Normal progressIncident
Incident updateElevated errors for Claude Opus 5.5
- OutageMajor incident
Elevated errors for Claude Opus 5.5this change
Anthropic reported a major incident involving elevated errors on Claude Opus 5.5 requests, affecting claude.ai, Claude API - api.anthropic.com, Claude Code, and Claude Cowork. It started at 2026-10-24 00:31 UTC and was still open when archived, open for 0 min at the last update; Anthropic was investigating, with no cause or fix stated.